[PATCH v3 0/7] drivers: Add generic device lookup helpers

[PATCH v3 0/7] drivers: Add generic device lookup helpers

[Suzuki K Poulose]

We have device iterators to find a particular device matching a criteria
for a given bus/class/driver. i.e, {bus,class,driver}_find_device()
APIs. The matching criteria is a function pointer for the APIs. Often the
lookup is based on a generic property of a device (e.g, name, fwnode, of node
pointer or device type) rather than a driver specific information. However, each
driver writes up its own "match" function, spilling the similar match functions
all over the driver subsystems.

This series adds device match helpers by generic device properties of a device.
Using these generic match functions, introduce wrappers to the existing
 *_find_device() helpers and converts the existing users to use the new wrappers.
 i.e,
	{bus/class/driver}_find_device_by_name()
	{bus/class/driver}_find_device_by_fwnode()
	{bus/class/driver}_find_device_by_devt()
	{bus/class/driver}_find_device_by_acpi_dev()

Also adds a wrapper for finding a platform device by driver, to avoid
spilling the platform_bus internals in the individual drivers. Applies
on 5.3-rc1.

   [0] git://linux-arm.org/linux-skp.git driver-cleanup/v3
RFC[1] https://marc.info/?i=1559577023-558-1-git-send-email-suzuki.poulose@arm.com
V1 [2] https://marc.info/?i=1559747630-28065-1-git-send-email-suzuki.poulose@arm.com
V2 [3] https://marc.info/?i=1560534863-15115-1-git-send-email-suzuki.poulose@arm.com

Changes since v2:
 - Merge the device match helper introduction patch with the variants
   of the helpers, for better review.
 - Use platform_find_device_by_driver for mcde drm driver.

Cc: Alan Tull <atull@kernel.org>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Alexander Aring <alex.aring@gmail.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexandre Belloni <alexandre.belloni@bootlin.com>
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Dan Murphy <dmurphy@ti.com>
Cc: David Airlie <airlied@linux.ie>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: devicetree@vger.kernel.org
Cc: Doug Ledford <dledford@redhat.com>
Cc: dri-devel@lists.freedesktop.org
Cc: Elie Morisse <syniurge@gmail.com>
Cc: Eric Anholt <eric@anholt.net>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: Frank Rowand <frowand.list@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Harald Freudenberger <freude@linux.ibm.com>
Cc: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: "Heiko Stübner" <heiko@sntech.de>
Cc: Heiko Stuebner <heiko@sntech.de>
Cc: Heiner Kallweit <hkallweit1@gmail.com>
Cc: Inki Dae <inki.dae@samsung.com>
Cc: Jacek Anaszewski <jacek.anaszewski@gmail.com>
Cc: "James E.J. Bottomley" <jejb@linux.ibm.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Jiri Slaby <jslaby@suse.com>
Cc: Joe Perches <joe@perches.com>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: Lee Jones <lee.jones@linaro.org>
Cc: Len Brown <lenb@kernel.org>
Cc: Liam Girdwood <lgirdwood@gmail.com>
Cc: linux-acpi@vger.kernel.org
Cc: linux-fpga@vger.kernel.org
Cc: linux-i2c@vger.kernel.org
Cc: linux-leds@vger.kernel.org
Cc: linux-rockchip@lists.infradead.org
Cc: linux-rtc@vger.kernel.org
Cc: linux-spi@vger.kernel.org
Cc: linux-usb@vger.kernel.org
Cc: linux-wpan@vger.kernel.org
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Mark Brown <broonie@kernel.org>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: Maxime Ripard <maxime.ripard@bootlin.com>
Cc: Mika Westerberg <mika.westerberg@linux.intel.com>
Cc: Moritz Fischer <mdf@kernel.org>
Cc: Nehal Shah <nehal-bakulchandra.shah@amd.com>
Cc: Oliver Neukum <oneukum@suse.com>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Peter Oberparleiter <oberpar@linux.ibm.com>
Cc: Peter Rosin <peda@axentia.se>
Cc: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Robin Murphy <robin.murphy@arm.com>
Cc: Sandy Huang <hjc@rock-chips.com>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Seung-Woo Kim <sw0312.kim@samsung.com>
Cc: Shyam Sundar S K <shyam-sundar.s-k@amd.com>
Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Cc: Stefan Schmidt <stefan@datenfreihafen.org>
Cc: Takashi Iwai <tiwai@suse.com>
Cc: Thor Thayer <thor.thayer@linux.intel.com>
Cc: Tomas Winkler <tomas.winkler@intel.com>
Cc: Ulf Hansson <ulf.hansson@linaro.org>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Wolfram Sang <wsa@the-dreams.de>

Suzuki K Poulose (7):
  drivers: Introduce device lookup variants by name
  drivers: Introduce device lookup variants by of_node
  drivers: Introduce device lookup variants by fwnode
  drivers: Introduce device lookup variants by device type
  drivers: Introduce device lookup variants by ACPI_COMPANION device
  drivers: Add generic helper to match any device
  platform: Add platform_find_device_by_driver() helper

 drivers/amba/tegra-ahb.c                      |  11 +-
 drivers/base/bus.c                            |  24 --
 drivers/base/core.c                           |  39 ++-
 drivers/base/devcon.c                         |   8 +-
 drivers/base/platform.c                       |  14 ++
 drivers/fpga/fpga-bridge.c                    |   8 +-
 drivers/fpga/fpga-mgr.c                       |   8 +-
 drivers/gpu/drm/drm_mipi_dsi.c                |   7 +-
 drivers/gpu/drm/exynos/exynos_drm_drv.c       |   9 +-
 drivers/gpu/drm/mcde/mcde_drv.c               |   3 +-
 drivers/gpu/drm/rockchip/rockchip_drm_drv.c   |   3 +-
 drivers/gpu/drm/vc4/vc4_drv.c                 |   3 +-
 .../hwtracing/coresight/coresight-platform.c  |  11 +-
 drivers/hwtracing/coresight/coresight-priv.h  |   2 -
 drivers/hwtracing/coresight/coresight.c       |   4 +-
 drivers/hwtracing/intel_th/core.c             |  10 +-
 drivers/hwtracing/stm/core.c                  |   9 +-
 drivers/i2c/busses/i2c-amd-mp2-pci.c          |   8 +-
 drivers/i2c/i2c-core-acpi.c                   |  11 +-
 drivers/i2c/i2c-core-of.c                     |   7 +-
 drivers/infiniband/hw/hns/hns_roce_hw_v1.c    |   8 +-
 drivers/iommu/arm-smmu-v3.c                   |   9 +-
 drivers/iommu/arm-smmu.c                      |   9 +-
 drivers/leds/led-class.c                      |   9 +-
 drivers/mfd/altera-sysmgr.c                   |  14 +-
 drivers/misc/mei/main.c                       |   9 +-
 drivers/mux/core.c                            |   7 +-
 .../ethernet/hisilicon/hns/hns_dsaf_misc.c    |   8 +-
 drivers/net/phy/mdio_bus.c                    |   9 +-
 drivers/nvmem/core.c                          |   7 +-
 drivers/of/of_mdio.c                          |   8 +-
 drivers/of/platform.c                         |   7 +-
 drivers/pci/probe.c                           |   7 +-
 drivers/regulator/of_regulator.c              |   7 +-
 drivers/rtc/interface.c                       |  11 +-
 drivers/s390/cio/ccwgroup.c                   |  18 +-
 drivers/s390/cio/device.c                     |  15 +-
 drivers/s390/crypto/zcrypt_api.c              |  22 +-
 drivers/scsi/scsi_proc.c                      |   9 +-
 drivers/spi/spi.c                             |  28 +--
 drivers/tty/tty_io.c                          |   8 +-
 drivers/usb/core/devio.c                      |   8 +-
 drivers/usb/roles/class.c                     |  16 +-
 drivers/usb/typec/class.c                     |  16 +-
 include/linux/device.h                        | 237 +++++++++++++++++-
 include/linux/platform_device.h               |   3 +
 net/ieee802154/core.c                         |   7 +-
 sound/soc/rockchip/rk3399_gru_sound.c         |   9 +-
 48 files changed, 341 insertions(+), 383 deletions(-)

-- 
2.21.0

[PATCH v3 2/7] drivers: Introduce device lookup variants by of_node

[Suzuki K Poulose]

Introduce wrappers for {bus/driver/class}_find_device() to
locate devices by its of_node.

Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <maxime.ripard@bootlin.com>
Cc: dri-devel@lists.freedesktop.org
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: devicetree@vger.kernel.org
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: Frank Rowand <frowand.list@gmail.com>
Cc: Heiko Stuebner <heiko@sntech.de>
Cc: Liam Girdwood <lgirdwood@gmail.com>
Cc: linux-i2c@vger.kernel.org
Cc: linux-rockchip@lists.infradead.org
Cc: linux-spi@vger.kernel.org
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Cc: Takashi Iwai <tiwai@suse.com>
Cc: Wolfram Sang <wsa@the-dreams.de>
Cc: Alan Tull <atull@kernel.org>
Cc: Moritz Fischer <mdf@kernel.org>
Cc: linux-fpga@vger.kernel.org
Cc: Peter Rosin <peda@axentia.se>
Cc: Mark Brown <broonie@kernel.org>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: Heiner Kallweit <hkallweit1@gmail.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: Liam Girdwood <lgirdwood@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: Lee Jones <lee.jones@linaro.org>
Cc: Thor Thayer <thor.thayer@linux.intel.com>
Cc: Jiri Slaby <jslaby@suse.com>
Cc: Mark Brown <broonie@kernel.org>
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: Peter Rosin <peda@axentia.se>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
---
 - Dropped the reviewed-by tags from Thor, Mark, Andrew and Peter as the
   patches are mereged, though there are no functional changes.
---
 drivers/amba/tegra-ahb.c              | 11 +-------
 drivers/fpga/fpga-bridge.c            |  8 +-----
 drivers/fpga/fpga-mgr.c               |  8 +-----
 drivers/gpu/drm/drm_mipi_dsi.c        |  7 +----
 drivers/i2c/i2c-core-of.c             |  7 +----
 drivers/mfd/altera-sysmgr.c           | 14 ++--------
 drivers/mux/core.c                    |  7 +----
 drivers/net/phy/mdio_bus.c            |  9 +------
 drivers/nvmem/core.c                  |  7 +----
 drivers/of/of_mdio.c                  |  8 +-----
 drivers/of/platform.c                 |  7 +----
 drivers/regulator/of_regulator.c      |  7 +----
 drivers/spi/spi.c                     | 20 +++------------
 include/linux/device.h                | 37 +++++++++++++++++++++++++++
 sound/soc/rockchip/rk3399_gru_sound.c |  9 ++-----
 15 files changed, 56 insertions(+), 110 deletions(-)

diff --git a/drivers/amba/tegra-ahb.c b/drivers/amba/tegra-ahb.c
index aa64eece77a6..57d3b2e2d007 100644
--- a/drivers/amba/tegra-ahb.c
+++ b/drivers/amba/tegra-ahb.c
@@ -134,22 +134,13 @@ static inline void gizmo_writel(struct tegra_ahb *ahb, u32 value, u32 offset)
 }
 
 #ifdef CONFIG_TEGRA_IOMMU_SMMU
-static int tegra_ahb_match_by_smmu(struct device *dev, const void *data)
-{
-	struct tegra_ahb *ahb = dev_get_drvdata(dev);
-	const struct device_node *dn = data;
-
-	return (ahb->dev->of_node == dn) ? 1 : 0;
-}
-
 int tegra_ahb_enable_smmu(struct device_node *dn)
 {
 	struct device *dev;
 	u32 val;
 	struct tegra_ahb *ahb;
 
-	dev = driver_find_device(&tegra_ahb_driver.driver, NULL, dn,
-				 tegra_ahb_match_by_smmu);
+	dev = driver_find_device_by_of_node(&tegra_ahb_driver.driver, dn);
 	if (!dev)
 		return -EPROBE_DEFER;
 	ahb = dev_get_drvdata(dev);
diff --git a/drivers/fpga/fpga-bridge.c b/drivers/fpga/fpga-bridge.c
index 80bd8f1b2aa6..4bab9028940a 100644
--- a/drivers/fpga/fpga-bridge.c
+++ b/drivers/fpga/fpga-bridge.c
@@ -19,11 +19,6 @@ static struct class *fpga_bridge_class;
 /* Lock for adding/removing bridges to linked lists*/
 static spinlock_t bridge_list_lock;
 
-static int fpga_bridge_of_node_match(struct device *dev, const void *data)
-{
-	return dev->of_node == data;
-}
-
 /**
  * fpga_bridge_enable - Enable transactions on the bridge
  *
@@ -104,8 +99,7 @@ struct fpga_bridge *of_fpga_bridge_get(struct device_node *np,
 {
 	struct device *dev;
 
-	dev = class_find_device(fpga_bridge_class, NULL, np,
-				fpga_bridge_of_node_match);
+	dev = class_find_device_by_of_node(fpga_bridge_class, np);
 	if (!dev)
 		return ERR_PTR(-ENODEV);
 
diff --git a/drivers/fpga/fpga-mgr.c b/drivers/fpga/fpga-mgr.c
index c3866816456a..e05104f5e40c 100644
--- a/drivers/fpga/fpga-mgr.c
+++ b/drivers/fpga/fpga-mgr.c
@@ -482,11 +482,6 @@ struct fpga_manager *fpga_mgr_get(struct device *dev)
 }
 EXPORT_SYMBOL_GPL(fpga_mgr_get);
 
-static int fpga_mgr_of_node_match(struct device *dev, const void *data)
-{
-	return dev->of_node == data;
-}
-
 /**
  * of_fpga_mgr_get - Given a device node, get a reference to a fpga mgr.
  *
@@ -498,8 +493,7 @@ struct fpga_manager *of_fpga_mgr_get(struct device_node *node)
 {
 	struct device *dev;
 
-	dev = class_find_device(fpga_mgr_class, NULL, node,
-				fpga_mgr_of_node_match);
+	dev = class_find_device_by_of_node(fpga_mgr_class, node);
 	if (!dev)
 		return ERR_PTR(-ENODEV);
 
diff --git a/drivers/gpu/drm/drm_mipi_dsi.c b/drivers/gpu/drm/drm_mipi_dsi.c
index ad19df0686c9..bd2498bbd74a 100644
--- a/drivers/gpu/drm/drm_mipi_dsi.c
+++ b/drivers/gpu/drm/drm_mipi_dsi.c
@@ -93,11 +93,6 @@ static struct bus_type mipi_dsi_bus_type = {
 	.pm = &mipi_dsi_device_pm_ops,
 };
 
-static int of_device_match(struct device *dev, const void *data)
-{
-	return dev->of_node == data;
-}
-
 /**
  * of_find_mipi_dsi_device_by_node() - find the MIPI DSI device matching a
  *    device tree node
@@ -110,7 +105,7 @@ struct mipi_dsi_device *of_find_mipi_dsi_device_by_node(struct device_node *np)
 {
 	struct device *dev;
 
-	dev = bus_find_device(&mipi_dsi_bus_type, NULL, np, of_device_match);
+	dev = bus_find_device_by_of_node(&mipi_dsi_bus_type, np);
 
 	return dev ? to_mipi_dsi_device(dev) : NULL;
 }
diff --git a/drivers/i2c/i2c-core-of.c b/drivers/i2c/i2c-core-of.c
index d1c48dec7118..6f632d543fcc 100644
--- a/drivers/i2c/i2c-core-of.c
+++ b/drivers/i2c/i2c-core-of.c
@@ -113,11 +113,6 @@ void of_i2c_register_devices(struct i2c_adapter *adap)
 	of_node_put(bus);
 }
 
-static int of_dev_node_match(struct device *dev, const void *data)
-{
-	return dev->of_node == data;
-}
-
 static int of_dev_or_parent_node_match(struct device *dev, const void *data)
 {
 	if (dev->of_node == data)
@@ -135,7 +130,7 @@ struct i2c_client *of_find_i2c_device_by_node(struct device_node *node)
 	struct device *dev;
 	struct i2c_client *client;
 
-	dev = bus_find_device(&i2c_bus_type, NULL, node, of_dev_node_match);
+	dev = bus_find_device_by_of_node(&i2c_bus_type, node);
 	if (!dev)
 		return NULL;
 
diff --git a/drivers/mfd/altera-sysmgr.c b/drivers/mfd/altera-sysmgr.c
index 2ee14d8a6d31..d2a13a547a3c 100644
--- a/drivers/mfd/altera-sysmgr.c
+++ b/drivers/mfd/altera-sysmgr.c
@@ -87,16 +87,6 @@ static struct regmap_config altr_sysmgr_regmap_cfg = {
 	.use_single_write = true,
 };
 
-/**
- * sysmgr_match_phandle
- * Matching function used by driver_find_device().
- * Return: True if match is found, otherwise false.
- */
-static int sysmgr_match_phandle(struct device *dev, const void *data)
-{
-	return dev->of_node == (const struct device_node *)data;
-}
-
 /**
  * altr_sysmgr_regmap_lookup_by_phandle
  * Find the sysmgr previous configured in probe() and return regmap property.
@@ -117,8 +107,8 @@ struct regmap *altr_sysmgr_regmap_lookup_by_phandle(struct device_node *np,
 	if (!sysmgr_np)
 		return ERR_PTR(-ENODEV);
 
-	dev = driver_find_device(&altr_sysmgr_driver.driver, NULL,
-				 (void *)sysmgr_np, sysmgr_match_phandle);
+	dev = driver_find_device_by_of_node(&altr_sysmgr_driver.driver,
+					    (void *)sysmgr_np);
 	of_node_put(sysmgr_np);
 	if (!dev)
 		return ERR_PTR(-EPROBE_DEFER);
diff --git a/drivers/mux/core.c b/drivers/mux/core.c
index d1271c1ee23c..1fb22388e7e0 100644
--- a/drivers/mux/core.c
+++ b/drivers/mux/core.c
@@ -405,17 +405,12 @@ int mux_control_deselect(struct mux_control *mux)
 }
 EXPORT_SYMBOL_GPL(mux_control_deselect);
 
-static int of_dev_node_match(struct device *dev, const void *data)
-{
-	return dev->of_node == data;
-}
-
 /* Note this function returns a reference to the mux_chip dev. */
 static struct mux_chip *of_find_mux_chip_by_node(struct device_node *np)
 {
 	struct device *dev;
 
-	dev = class_find_device(&mux_class, NULL, np, of_dev_node_match);
+	dev = class_find_device_by_of_node(&mux_class, np);
 
 	return dev ? to_mux_chip(dev) : NULL;
 }
diff --git a/drivers/net/phy/mdio_bus.c b/drivers/net/phy/mdio_bus.c
index bd04fe762056..ce940871331e 100644
--- a/drivers/net/phy/mdio_bus.c
+++ b/drivers/net/phy/mdio_bus.c
@@ -262,11 +262,6 @@ static struct class mdio_bus_class = {
 };
 
 #if IS_ENABLED(CONFIG_OF_MDIO)
-/* Helper function for of_mdio_find_bus */
-static int of_mdio_bus_match(struct device *dev, const void *mdio_bus_np)
-{
-	return dev->of_node == mdio_bus_np;
-}
 /**
  * of_mdio_find_bus - Given an mii_bus node, find the mii_bus.
  * @mdio_bus_np: Pointer to the mii_bus.
@@ -287,9 +282,7 @@ struct mii_bus *of_mdio_find_bus(struct device_node *mdio_bus_np)
 	if (!mdio_bus_np)
 		return NULL;
 
-	d = class_find_device(&mdio_bus_class, NULL,  mdio_bus_np,
-			      of_mdio_bus_match);
-
+	d = class_find_device_by_of_node(&mdio_bus_class, mdio_bus_np);
 	return d ? to_mii_bus(d) : NULL;
 }
 EXPORT_SYMBOL(of_mdio_find_bus);
diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c
index ac5d945be88a..057d1ff87d5d 100644
--- a/drivers/nvmem/core.c
+++ b/drivers/nvmem/core.c
@@ -76,11 +76,6 @@ static struct bus_type nvmem_bus_type = {
 	.name		= "nvmem",
 };
 
-static int of_nvmem_match(struct device *dev, const void *nvmem_np)
-{
-	return dev->of_node == nvmem_np;
-}
-
 static struct nvmem_device *of_nvmem_find(struct device_node *nvmem_np)
 {
 	struct device *d;
@@ -88,7 +83,7 @@ static struct nvmem_device *of_nvmem_find(struct device_node *nvmem_np)
 	if (!nvmem_np)
 		return NULL;
 
-	d = bus_find_device(&nvmem_bus_type, NULL, nvmem_np, of_nvmem_match);
+	d = bus_find_device_by_of_node(&nvmem_bus_type, nvmem_np);
 
 	if (!d)
 		return NULL;
diff --git a/drivers/of/of_mdio.c b/drivers/of/of_mdio.c
index 44f53496cab1..000b95787df1 100644
--- a/drivers/of/of_mdio.c
+++ b/drivers/of/of_mdio.c
@@ -280,12 +280,6 @@ int of_mdiobus_register(struct mii_bus *mdio, struct device_node *np)
 }
 EXPORT_SYMBOL(of_mdiobus_register);
 
-/* Helper function for of_phy_find_device */
-static int of_phy_match(struct device *dev, const void *phy_np)
-{
-	return dev->of_node == phy_np;
-}
-
 /**
  * of_phy_find_device - Give a PHY node, find the phy_device
  * @phy_np: Pointer to the phy's device tree node
@@ -301,7 +295,7 @@ struct phy_device *of_phy_find_device(struct device_node *phy_np)
 	if (!phy_np)
 		return NULL;
 
-	d = bus_find_device(&mdio_bus_type, NULL, phy_np, of_phy_match);
+	d = bus_find_device_by_of_node(&mdio_bus_type, phy_np);
 	if (d) {
 		mdiodev = to_mdio_device(d);
 		if (mdiodev->flags & MDIO_DEVICE_FLAG_PHY)
diff --git a/drivers/of/platform.c b/drivers/of/platform.c
index 7801e25e6895..b47a2292fe8e 100644
--- a/drivers/of/platform.c
+++ b/drivers/of/platform.c
@@ -37,11 +37,6 @@ static const struct of_device_id of_skipped_node_table[] = {
 	{} /* Empty terminated list */
 };
 
-static int of_dev_node_match(struct device *dev, const void *data)
-{
-	return dev->of_node == data;
-}
-
 /**
  * of_find_device_by_node - Find the platform_device associated with a node
  * @np: Pointer to device tree node
@@ -55,7 +50,7 @@ struct platform_device *of_find_device_by_node(struct device_node *np)
 {
 	struct device *dev;
 
-	dev = bus_find_device(&platform_bus_type, NULL, np, of_dev_node_match);
+	dev = bus_find_device_by_of_node(&platform_bus_type, np);
 	return dev ? to_platform_device(dev) : NULL;
 }
 EXPORT_SYMBOL(of_find_device_by_node);
diff --git a/drivers/regulator/of_regulator.c b/drivers/regulator/of_regulator.c
index 397918ebba55..20dcc9c03adc 100644
--- a/drivers/regulator/of_regulator.c
+++ b/drivers/regulator/of_regulator.c
@@ -460,16 +460,11 @@ struct regulator_init_data *regulator_of_get_init_data(struct device *dev,
 	return NULL;
 }
 
-static int of_node_match(struct device *dev, const void *data)
-{
-	return dev->of_node == data;
-}
-
 struct regulator_dev *of_find_regulator_by_node(struct device_node *np)
 {
 	struct device *dev;
 
-	dev = class_find_device(&regulator_class, NULL, np, of_node_match);
+	dev = class_find_device_by_of_node(&regulator_class, np);
 
 	return dev ? dev_to_rdev(dev) : NULL;
 }
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index 75ac046cae52..a591da87981a 100644
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -3652,37 +3652,25 @@ EXPORT_SYMBOL_GPL(spi_write_then_read);
 /*-------------------------------------------------------------------------*/
 
 #if IS_ENABLED(CONFIG_OF)
-static int __spi_of_device_match(struct device *dev, const void *data)
-{
-	return dev->of_node == data;
-}
-
 /* must call put_device() when done with returned spi_device device */
 struct spi_device *of_find_spi_device_by_node(struct device_node *node)
 {
-	struct device *dev = bus_find_device(&spi_bus_type, NULL, node,
-						__spi_of_device_match);
+	struct device *dev = bus_find_device_by_of_node(&spi_bus_type, node);
+
 	return dev ? to_spi_device(dev) : NULL;
 }
 EXPORT_SYMBOL_GPL(of_find_spi_device_by_node);
 #endif /* IS_ENABLED(CONFIG_OF) */
 
 #if IS_ENABLED(CONFIG_OF_DYNAMIC)
-static int __spi_of_controller_match(struct device *dev, const void *data)
-{
-	return dev->of_node == data;
-}
-
 /* the spi controllers are not using spi_bus, so we find it with another way */
 static struct spi_controller *of_find_spi_controller_by_node(struct device_node *node)
 {
 	struct device *dev;
 
-	dev = class_find_device(&spi_master_class, NULL, node,
-				__spi_of_controller_match);
+	dev = class_find_device_by_of_node(&spi_master_class, node);
 	if (!dev && IS_ENABLED(CONFIG_SPI_SLAVE))
-		dev = class_find_device(&spi_slave_class, NULL, node,
-					__spi_of_controller_match);
+		dev = class_find_device_by_of_node(&spi_slave_class, node);
 	if (!dev)
 		return NULL;
 
diff --git a/include/linux/device.h b/include/linux/device.h
index 3ba376b8b456..29d8d7ad41e6 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -186,6 +186,18 @@ static inline struct device *bus_find_device_by_name(struct bus_type *bus,
 	return bus_find_device(bus, start, name, device_match_name);
 }
 
+/**
+ * bus_find_device_by_of_node : device iterator for locating a particular device
+ * matching the of_node.
+ * @bus: bus type
+ * @np: of_node of the device to match.
+ */
+static inline struct device *
+bus_find_device_by_of_node(struct bus_type *bus, const struct device_node *np)
+{
+	return bus_find_device(bus, NULL, np, device_match_of_node);
+}
+
 struct device *subsys_find_device_by_id(struct bus_type *bus, unsigned int id,
 					struct device *hint);
 int bus_for_each_drv(struct bus_type *bus, struct device_driver *start,
@@ -366,6 +378,19 @@ static inline struct device *driver_find_device_by_name(struct device_driver *dr
 	return driver_find_device(drv, NULL, name, device_match_name);
 }
 
+/**
+ * driver_find_device_by_of_node- device iterator for locating a particular device
+ * by of_node pointer.
+ * @driver: the driver we're iterating
+ * @np: of_node pointer to match.
+ */
+static inline struct device *
+driver_find_device_by_of_node(struct device_driver *drv,
+			      const struct device_node *np)
+{
+	return driver_find_device(drv, NULL, np, device_match_of_node);
+}
+
 void driver_deferred_probe_add(struct device *dev);
 int driver_deferred_probe_check_state(struct device *dev);
 int driver_deferred_probe_check_state_continue(struct device *dev);
@@ -507,6 +532,18 @@ static inline struct device *class_find_device_by_name(struct class *class,
 	return class_find_device(class, NULL, name, device_match_name);
 }
 
+/**
+ * class_find_device_by_of_node : device iterator for locating a particular device
+ * matching the of_node.
+ * @class: class type
+ * @np: of_node of the device to match.
+ */
+static inline struct device *
+class_find_device_by_of_node(struct class *class, const struct device_node *np)
+{
+	return class_find_device(class, NULL, np, device_match_of_node);
+}
+
 struct class_attribute {
 	struct attribute attr;
 	ssize_t (*show)(struct class *class, struct class_attribute *attr,
diff --git a/sound/soc/rockchip/rk3399_gru_sound.c b/sound/soc/rockchip/rk3399_gru_sound.c
index c16b0ffe8cfc..d951100bf770 100644
--- a/sound/soc/rockchip/rk3399_gru_sound.c
+++ b/sound/soc/rockchip/rk3399_gru_sound.c
@@ -422,11 +422,6 @@ static const struct dailink_match_data dailink_match[] = {
 	},
 };
 
-static int of_dev_node_match(struct device *dev, const void *data)
-{
-	return dev->of_node == data;
-}
-
 static int rockchip_sound_codec_node_match(struct device_node *np_codec)
 {
 	struct device *dev;
@@ -438,8 +433,8 @@ static int rockchip_sound_codec_node_match(struct device_node *np_codec)
 			continue;
 
 		if (dailink_match[i].bus_type) {
-			dev = bus_find_device(dailink_match[i].bus_type, NULL,
-					      np_codec, of_dev_node_match);
+			dev = bus_find_device_by_of_node(dailink_match[i].bus_type,
+							 np_codec);
 			if (!dev)
 				continue;
 			put_device(dev);
-- 
2.21.0

Re: [PATCH v3 2/7] drivers: Introduce device lookup variants by of_node

[Lee Jones]

On Tue, 23 Jul 2019, Suzuki K Poulose wrote:

> Introduce wrappers for {bus/driver/class}_find_device() to
> locate devices by its of_node.
> 
> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
> Cc: Maxime Ripard <maxime.ripard@bootlin.com>
> Cc: dri-devel@lists.freedesktop.org
> Cc: David Airlie <airlied@linux.ie>
> Cc: Daniel Vetter <daniel@ffwll.ch>
> Cc: devicetree@vger.kernel.org
> Cc: Florian Fainelli <f.fainelli@gmail.com>
> Cc: Frank Rowand <frowand.list@gmail.com>
> Cc: Heiko Stuebner <heiko@sntech.de>
> Cc: Liam Girdwood <lgirdwood@gmail.com>
> Cc: linux-i2c@vger.kernel.org
> Cc: linux-rockchip@lists.infradead.org
> Cc: linux-spi@vger.kernel.org
> Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
> Cc: Rob Herring <robh+dt@kernel.org>
> Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
> Cc: Takashi Iwai <tiwai@suse.com>
> Cc: Wolfram Sang <wsa@the-dreams.de>
> Cc: Alan Tull <atull@kernel.org>
> Cc: Moritz Fischer <mdf@kernel.org>
> Cc: linux-fpga@vger.kernel.org
> Cc: Peter Rosin <peda@axentia.se>
> Cc: Mark Brown <broonie@kernel.org>
> Cc: Florian Fainelli <f.fainelli@gmail.com>
> Cc: Heiner Kallweit <hkallweit1@gmail.com>
> Cc: "David S. Miller" <davem@davemloft.net>
> Cc: Andrew Lunn <andrew@lunn.ch>
> Cc: Liam Girdwood <lgirdwood@gmail.com>
> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> Cc: "Rafael J. Wysocki" <rafael@kernel.org>
> Cc: Lee Jones <lee.jones@linaro.org>
> Cc: Thor Thayer <thor.thayer@linux.intel.com>
> Cc: Jiri Slaby <jslaby@suse.com>
> Cc: Mark Brown <broonie@kernel.org>
> Cc: Andrew Lunn <andrew@lunn.ch>
> Cc: Peter Rosin <peda@axentia.se>
> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
> ---
>  - Dropped the reviewed-by tags from Thor, Mark, Andrew and Peter as the
>    patches are mereged, though there are no functional changes.
> ---
>  drivers/amba/tegra-ahb.c              | 11 +-------
>  drivers/fpga/fpga-bridge.c            |  8 +-----
>  drivers/fpga/fpga-mgr.c               |  8 +-----
>  drivers/gpu/drm/drm_mipi_dsi.c        |  7 +----
>  drivers/i2c/i2c-core-of.c             |  7 +----
>  drivers/mfd/altera-sysmgr.c           | 14 ++--------

For my own reference:
  Acked-for-MFD-by: Lee Jones <lee.jones@linaro.org>

What's the merge plan for this patch?

Is anyone prepared to create an immutable branch for us to pull from?
I'm happy to do it if no one else steps up.

>  drivers/mux/core.c                    |  7 +----
>  drivers/net/phy/mdio_bus.c            |  9 +------
>  drivers/nvmem/core.c                  |  7 +----
>  drivers/of/of_mdio.c                  |  8 +-----
>  drivers/of/platform.c                 |  7 +----
>  drivers/regulator/of_regulator.c      |  7 +----
>  drivers/spi/spi.c                     | 20 +++------------
>  include/linux/device.h                | 37 +++++++++++++++++++++++++++
>  sound/soc/rockchip/rk3399_gru_sound.c |  9 ++-----
>  15 files changed, 56 insertions(+), 110 deletions(-)

-- 
Lee Jones [李琼斯]
Linaro Services Technical Lead
Linaro.org │ Open source software for ARM SoCs
Follow Linaro: Facebook | Twitter | Blog
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Re: [PATCH v3 0/7] drivers: Add generic device lookup helpers

[Greg KH]

On Tue, Jul 23, 2019 at 11:18:31PM +0100, Suzuki K Poulose wrote:
> We have device iterators to find a particular device matching a criteria
> for a given bus/class/driver. i.e, {bus,class,driver}_find_device()
> APIs. The matching criteria is a function pointer for the APIs. Often the
> lookup is based on a generic property of a device (e.g, name, fwnode, of node
> pointer or device type) rather than a driver specific information. However, each
> driver writes up its own "match" function, spilling the similar match functions
> all over the driver subsystems.
> 
> This series adds device match helpers by generic device properties of a device.
> Using these generic match functions, introduce wrappers to the existing
>  *_find_device() helpers and converts the existing users to use the new wrappers.
>  i.e,
> 	{bus/class/driver}_find_device_by_name()
> 	{bus/class/driver}_find_device_by_fwnode()
> 	{bus/class/driver}_find_device_by_devt()
> 	{bus/class/driver}_find_device_by_acpi_dev()
> 
> Also adds a wrapper for finding a platform device by driver, to avoid
> spilling the platform_bus internals in the individual drivers. Applies
> on 5.3-rc1.
> 
>    [0] git://linux-arm.org/linux-skp.git driver-cleanup/v3
> RFC[1] https://marc.info/?i=1559577023-558-1-git-send-email-suzuki.poulose@arm.com
> V1 [2] https://marc.info/?i=1559747630-28065-1-git-send-email-suzuki.poulose@arm.com
> V2 [3] https://marc.info/?i=1560534863-15115-1-git-send-email-suzuki.poulose@arm.com
> 
> Changes since v2:
>  - Merge the device match helper introduction patch with the variants
>    of the helpers, for better review.
>  - Use platform_find_device_by_driver for mcde drm driver.

This looks good to me at first glance, thanks for doing this work.

I'll wait a few days to collect acks from various subsystem maintainers
before taking the series in my tree.

thanks,

greg k-h
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Re: [PATCH v3 2/7] drivers: Introduce device lookup variants by of_node

[Wolfram Sang]

[-- Attachment #1: Type: text/plain, Size: 1952 bytes --]

On Tue, Jul 23, 2019 at 11:18:33PM +0100, Suzuki K Poulose wrote:
> Introduce wrappers for {bus/driver/class}_find_device() to
> locate devices by its of_node.
> 
> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
> Cc: Maxime Ripard <maxime.ripard@bootlin.com>
> Cc: dri-devel@lists.freedesktop.org
> Cc: David Airlie <airlied@linux.ie>
> Cc: Daniel Vetter <daniel@ffwll.ch>
> Cc: devicetree@vger.kernel.org
> Cc: Florian Fainelli <f.fainelli@gmail.com>
> Cc: Frank Rowand <frowand.list@gmail.com>
> Cc: Heiko Stuebner <heiko@sntech.de>
> Cc: Liam Girdwood <lgirdwood@gmail.com>
> Cc: linux-i2c@vger.kernel.org
> Cc: linux-rockchip@lists.infradead.org
> Cc: linux-spi@vger.kernel.org
> Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
> Cc: Rob Herring <robh+dt@kernel.org>
> Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
> Cc: Takashi Iwai <tiwai@suse.com>
> Cc: Wolfram Sang <wsa@the-dreams.de>
> Cc: Alan Tull <atull@kernel.org>
> Cc: Moritz Fischer <mdf@kernel.org>
> Cc: linux-fpga@vger.kernel.org
> Cc: Peter Rosin <peda@axentia.se>
> Cc: Mark Brown <broonie@kernel.org>
> Cc: Florian Fainelli <f.fainelli@gmail.com>
> Cc: Heiner Kallweit <hkallweit1@gmail.com>
> Cc: "David S. Miller" <davem@davemloft.net>
> Cc: Andrew Lunn <andrew@lunn.ch>
> Cc: Liam Girdwood <lgirdwood@gmail.com>
> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> Cc: "Rafael J. Wysocki" <rafael@kernel.org>
> Cc: Lee Jones <lee.jones@linaro.org>
> Cc: Thor Thayer <thor.thayer@linux.intel.com>
> Cc: Jiri Slaby <jslaby@suse.com>
> Cc: Mark Brown <broonie@kernel.org>
> Cc: Andrew Lunn <andrew@lunn.ch>
> Cc: Peter Rosin <peda@axentia.se>
> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
> ---
>  - Dropped the reviewed-by tags from Thor, Mark, Andrew and Peter as the
>    patches are mereged, though there are no functional changes.

Acked-by: Wolfram Sang <wsa@the-dreams.de> # I2C part


[-- Attachment #2: signature.asc --]
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Re: [PATCH v3 2/7] drivers: Introduce device lookup variants by of_node

[Moritz Fischer]

On Tue, Jul 23, 2019 at 11:18:33PM +0100, Suzuki K Poulose wrote:
> Introduce wrappers for {bus/driver/class}_find_device() to
> locate devices by its of_node.
> 
> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
> Cc: Maxime Ripard <maxime.ripard@bootlin.com>
> Cc: dri-devel@lists.freedesktop.org
> Cc: David Airlie <airlied@linux.ie>
> Cc: Daniel Vetter <daniel@ffwll.ch>
> Cc: devicetree@vger.kernel.org
> Cc: Florian Fainelli <f.fainelli@gmail.com>
> Cc: Frank Rowand <frowand.list@gmail.com>
> Cc: Heiko Stuebner <heiko@sntech.de>
> Cc: Liam Girdwood <lgirdwood@gmail.com>
> Cc: linux-i2c@vger.kernel.org
> Cc: linux-rockchip@lists.infradead.org
> Cc: linux-spi@vger.kernel.org
> Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
> Cc: Rob Herring <robh+dt@kernel.org>
> Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
> Cc: Takashi Iwai <tiwai@suse.com>
> Cc: Wolfram Sang <wsa@the-dreams.de>
> Cc: Alan Tull <atull@kernel.org>
> Cc: Moritz Fischer <mdf@kernel.org>
> Cc: linux-fpga@vger.kernel.org
> Cc: Peter Rosin <peda@axentia.se>
> Cc: Mark Brown <broonie@kernel.org>
> Cc: Florian Fainelli <f.fainelli@gmail.com>
> Cc: Heiner Kallweit <hkallweit1@gmail.com>
> Cc: "David S. Miller" <davem@davemloft.net>
> Cc: Andrew Lunn <andrew@lunn.ch>
> Cc: Liam Girdwood <lgirdwood@gmail.com>
> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> Cc: "Rafael J. Wysocki" <rafael@kernel.org>
> Cc: Lee Jones <lee.jones@linaro.org>
> Cc: Thor Thayer <thor.thayer@linux.intel.com>
> Cc: Jiri Slaby <jslaby@suse.com>
> Cc: Mark Brown <broonie@kernel.org>
> Cc: Andrew Lunn <andrew@lunn.ch>
> Cc: Peter Rosin <peda@axentia.se>
> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>

Acked-by: Moritz Fischer <mdf@kernel.org> # For FPGA part

> ---
>  - Dropped the reviewed-by tags from Thor, Mark, Andrew and Peter as the
>    patches are mereged, though there are no functional changes.
> ---
>  drivers/amba/tegra-ahb.c              | 11 +-------
>  drivers/fpga/fpga-bridge.c            |  8 +-----
>  drivers/fpga/fpga-mgr.c               |  8 +-----
>  drivers/gpu/drm/drm_mipi_dsi.c        |  7 +----
>  drivers/i2c/i2c-core-of.c             |  7 +----
>  drivers/mfd/altera-sysmgr.c           | 14 ++--------
>  drivers/mux/core.c                    |  7 +----
>  drivers/net/phy/mdio_bus.c            |  9 +------
>  drivers/nvmem/core.c                  |  7 +----
>  drivers/of/of_mdio.c                  |  8 +-----
>  drivers/of/platform.c                 |  7 +----
>  drivers/regulator/of_regulator.c      |  7 +----
>  drivers/spi/spi.c                     | 20 +++------------
>  include/linux/device.h                | 37 +++++++++++++++++++++++++++
>  sound/soc/rockchip/rk3399_gru_sound.c |  9 ++-----
>  15 files changed, 56 insertions(+), 110 deletions(-)
> 
> diff --git a/drivers/amba/tegra-ahb.c b/drivers/amba/tegra-ahb.c
> index aa64eece77a6..57d3b2e2d007 100644
> --- a/drivers/amba/tegra-ahb.c
> +++ b/drivers/amba/tegra-ahb.c
> @@ -134,22 +134,13 @@ static inline void gizmo_writel(struct tegra_ahb *ahb, u32 value, u32 offset)
>  }
>  
>  #ifdef CONFIG_TEGRA_IOMMU_SMMU
> -static int tegra_ahb_match_by_smmu(struct device *dev, const void *data)
> -{
> -	struct tegra_ahb *ahb = dev_get_drvdata(dev);
> -	const struct device_node *dn = data;
> -
> -	return (ahb->dev->of_node == dn) ? 1 : 0;
> -}
> -
>  int tegra_ahb_enable_smmu(struct device_node *dn)
>  {
>  	struct device *dev;
>  	u32 val;
>  	struct tegra_ahb *ahb;
>  
> -	dev = driver_find_device(&tegra_ahb_driver.driver, NULL, dn,
> -				 tegra_ahb_match_by_smmu);
> +	dev = driver_find_device_by_of_node(&tegra_ahb_driver.driver, dn);
>  	if (!dev)
>  		return -EPROBE_DEFER;
>  	ahb = dev_get_drvdata(dev);
> diff --git a/drivers/fpga/fpga-bridge.c b/drivers/fpga/fpga-bridge.c
> index 80bd8f1b2aa6..4bab9028940a 100644
> --- a/drivers/fpga/fpga-bridge.c
> +++ b/drivers/fpga/fpga-bridge.c
> @@ -19,11 +19,6 @@ static struct class *fpga_bridge_class;
>  /* Lock for adding/removing bridges to linked lists*/
>  static spinlock_t bridge_list_lock;
>  
> -static int fpga_bridge_of_node_match(struct device *dev, const void *data)
> -{
> -	return dev->of_node == data;
> -}
> -
>  /**
>   * fpga_bridge_enable - Enable transactions on the bridge
>   *
> @@ -104,8 +99,7 @@ struct fpga_bridge *of_fpga_bridge_get(struct device_node *np,
>  {
>  	struct device *dev;
>  
> -	dev = class_find_device(fpga_bridge_class, NULL, np,
> -				fpga_bridge_of_node_match);
> +	dev = class_find_device_by_of_node(fpga_bridge_class, np);
>  	if (!dev)
>  		return ERR_PTR(-ENODEV);
>  
> diff --git a/drivers/fpga/fpga-mgr.c b/drivers/fpga/fpga-mgr.c
> index c3866816456a..e05104f5e40c 100644
> --- a/drivers/fpga/fpga-mgr.c
> +++ b/drivers/fpga/fpga-mgr.c
> @@ -482,11 +482,6 @@ struct fpga_manager *fpga_mgr_get(struct device *dev)
>  }
>  EXPORT_SYMBOL_GPL(fpga_mgr_get);
>  
> -static int fpga_mgr_of_node_match(struct device *dev, const void *data)
> -{
> -	return dev->of_node == data;
> -}
> -
>  /**
>   * of_fpga_mgr_get - Given a device node, get a reference to a fpga mgr.
>   *
> @@ -498,8 +493,7 @@ struct fpga_manager *of_fpga_mgr_get(struct device_node *node)
>  {
>  	struct device *dev;
>  
> -	dev = class_find_device(fpga_mgr_class, NULL, node,
> -				fpga_mgr_of_node_match);
> +	dev = class_find_device_by_of_node(fpga_mgr_class, node);
>  	if (!dev)
>  		return ERR_PTR(-ENODEV);
>  
> diff --git a/drivers/gpu/drm/drm_mipi_dsi.c b/drivers/gpu/drm/drm_mipi_dsi.c
> index ad19df0686c9..bd2498bbd74a 100644
> --- a/drivers/gpu/drm/drm_mipi_dsi.c
> +++ b/drivers/gpu/drm/drm_mipi_dsi.c
> @@ -93,11 +93,6 @@ static struct bus_type mipi_dsi_bus_type = {
>  	.pm = &mipi_dsi_device_pm_ops,
>  };
>  
> -static int of_device_match(struct device *dev, const void *data)
> -{
> -	return dev->of_node == data;
> -}
> -
>  /**
>   * of_find_mipi_dsi_device_by_node() - find the MIPI DSI device matching a
>   *    device tree node
> @@ -110,7 +105,7 @@ struct mipi_dsi_device *of_find_mipi_dsi_device_by_node(struct device_node *np)
>  {
>  	struct device *dev;
>  
> -	dev = bus_find_device(&mipi_dsi_bus_type, NULL, np, of_device_match);
> +	dev = bus_find_device_by_of_node(&mipi_dsi_bus_type, np);
>  
>  	return dev ? to_mipi_dsi_device(dev) : NULL;
>  }
> diff --git a/drivers/i2c/i2c-core-of.c b/drivers/i2c/i2c-core-of.c
> index d1c48dec7118..6f632d543fcc 100644
> --- a/drivers/i2c/i2c-core-of.c
> +++ b/drivers/i2c/i2c-core-of.c
> @@ -113,11 +113,6 @@ void of_i2c_register_devices(struct i2c_adapter *adap)
>  	of_node_put(bus);
>  }
>  
> -static int of_dev_node_match(struct device *dev, const void *data)
> -{
> -	return dev->of_node == data;
> -}
> -
>  static int of_dev_or_parent_node_match(struct device *dev, const void *data)
>  {
>  	if (dev->of_node == data)
> @@ -135,7 +130,7 @@ struct i2c_client *of_find_i2c_device_by_node(struct device_node *node)
>  	struct device *dev;
>  	struct i2c_client *client;
>  
> -	dev = bus_find_device(&i2c_bus_type, NULL, node, of_dev_node_match);
> +	dev = bus_find_device_by_of_node(&i2c_bus_type, node);
>  	if (!dev)
>  		return NULL;
>  
> diff --git a/drivers/mfd/altera-sysmgr.c b/drivers/mfd/altera-sysmgr.c
> index 2ee14d8a6d31..d2a13a547a3c 100644
> --- a/drivers/mfd/altera-sysmgr.c
> +++ b/drivers/mfd/altera-sysmgr.c
> @@ -87,16 +87,6 @@ static struct regmap_config altr_sysmgr_regmap_cfg = {
>  	.use_single_write = true,
>  };
>  
> -/**
> - * sysmgr_match_phandle
> - * Matching function used by driver_find_device().
> - * Return: True if match is found, otherwise false.
> - */
> -static int sysmgr_match_phandle(struct device *dev, const void *data)
> -{
> -	return dev->of_node == (const struct device_node *)data;
> -}
> -
>  /**
>   * altr_sysmgr_regmap_lookup_by_phandle
>   * Find the sysmgr previous configured in probe() and return regmap property.
> @@ -117,8 +107,8 @@ struct regmap *altr_sysmgr_regmap_lookup_by_phandle(struct device_node *np,
>  	if (!sysmgr_np)
>  		return ERR_PTR(-ENODEV);
>  
> -	dev = driver_find_device(&altr_sysmgr_driver.driver, NULL,
> -				 (void *)sysmgr_np, sysmgr_match_phandle);
> +	dev = driver_find_device_by_of_node(&altr_sysmgr_driver.driver,
> +					    (void *)sysmgr_np);
>  	of_node_put(sysmgr_np);
>  	if (!dev)
>  		return ERR_PTR(-EPROBE_DEFER);
> diff --git a/drivers/mux/core.c b/drivers/mux/core.c
> index d1271c1ee23c..1fb22388e7e0 100644
> --- a/drivers/mux/core.c
> +++ b/drivers/mux/core.c
> @@ -405,17 +405,12 @@ int mux_control_deselect(struct mux_control *mux)
>  }
>  EXPORT_SYMBOL_GPL(mux_control_deselect);
>  
> -static int of_dev_node_match(struct device *dev, const void *data)
> -{
> -	return dev->of_node == data;
> -}
> -
>  /* Note this function returns a reference to the mux_chip dev. */
>  static struct mux_chip *of_find_mux_chip_by_node(struct device_node *np)
>  {
>  	struct device *dev;
>  
> -	dev = class_find_device(&mux_class, NULL, np, of_dev_node_match);
> +	dev = class_find_device_by_of_node(&mux_class, np);
>  
>  	return dev ? to_mux_chip(dev) : NULL;
>  }
> diff --git a/drivers/net/phy/mdio_bus.c b/drivers/net/phy/mdio_bus.c
> index bd04fe762056..ce940871331e 100644
> --- a/drivers/net/phy/mdio_bus.c
> +++ b/drivers/net/phy/mdio_bus.c
> @@ -262,11 +262,6 @@ static struct class mdio_bus_class = {
>  };
>  
>  #if IS_ENABLED(CONFIG_OF_MDIO)
> -/* Helper function for of_mdio_find_bus */
> -static int of_mdio_bus_match(struct device *dev, const void *mdio_bus_np)
> -{
> -	return dev->of_node == mdio_bus_np;
> -}
>  /**
>   * of_mdio_find_bus - Given an mii_bus node, find the mii_bus.
>   * @mdio_bus_np: Pointer to the mii_bus.
> @@ -287,9 +282,7 @@ struct mii_bus *of_mdio_find_bus(struct device_node *mdio_bus_np)
>  	if (!mdio_bus_np)
>  		return NULL;
>  
> -	d = class_find_device(&mdio_bus_class, NULL,  mdio_bus_np,
> -			      of_mdio_bus_match);
> -
> +	d = class_find_device_by_of_node(&mdio_bus_class, mdio_bus_np);
>  	return d ? to_mii_bus(d) : NULL;
>  }
>  EXPORT_SYMBOL(of_mdio_find_bus);
> diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c
> index ac5d945be88a..057d1ff87d5d 100644
> --- a/drivers/nvmem/core.c
> +++ b/drivers/nvmem/core.c
> @@ -76,11 +76,6 @@ static struct bus_type nvmem_bus_type = {
>  	.name		= "nvmem",
>  };
>  
> -static int of_nvmem_match(struct device *dev, const void *nvmem_np)
> -{
> -	return dev->of_node == nvmem_np;
> -}
> -
>  static struct nvmem_device *of_nvmem_find(struct device_node *nvmem_np)
>  {
>  	struct device *d;
> @@ -88,7 +83,7 @@ static struct nvmem_device *of_nvmem_find(struct device_node *nvmem_np)
>  	if (!nvmem_np)
>  		return NULL;
>  
> -	d = bus_find_device(&nvmem_bus_type, NULL, nvmem_np, of_nvmem_match);
> +	d = bus_find_device_by_of_node(&nvmem_bus_type, nvmem_np);
>  
>  	if (!d)
>  		return NULL;
> diff --git a/drivers/of/of_mdio.c b/drivers/of/of_mdio.c
> index 44f53496cab1..000b95787df1 100644
> --- a/drivers/of/of_mdio.c
> +++ b/drivers/of/of_mdio.c
> @@ -280,12 +280,6 @@ int of_mdiobus_register(struct mii_bus *mdio, struct device_node *np)
>  }
>  EXPORT_SYMBOL(of_mdiobus_register);
>  
> -/* Helper function for of_phy_find_device */
> -static int of_phy_match(struct device *dev, const void *phy_np)
> -{
> -	return dev->of_node == phy_np;
> -}
> -
>  /**
>   * of_phy_find_device - Give a PHY node, find the phy_device
>   * @phy_np: Pointer to the phy's device tree node
> @@ -301,7 +295,7 @@ struct phy_device *of_phy_find_device(struct device_node *phy_np)
>  	if (!phy_np)
>  		return NULL;
>  
> -	d = bus_find_device(&mdio_bus_type, NULL, phy_np, of_phy_match);
> +	d = bus_find_device_by_of_node(&mdio_bus_type, phy_np);
>  	if (d) {
>  		mdiodev = to_mdio_device(d);
>  		if (mdiodev->flags & MDIO_DEVICE_FLAG_PHY)
> diff --git a/drivers/of/platform.c b/drivers/of/platform.c
> index 7801e25e6895..b47a2292fe8e 100644
> --- a/drivers/of/platform.c
> +++ b/drivers/of/platform.c
> @@ -37,11 +37,6 @@ static const struct of_device_id of_skipped_node_table[] = {
>  	{} /* Empty terminated list */
>  };
>  
> -static int of_dev_node_match(struct device *dev, const void *data)
> -{
> -	return dev->of_node == data;
> -}
> -
>  /**
>   * of_find_device_by_node - Find the platform_device associated with a node
>   * @np: Pointer to device tree node
> @@ -55,7 +50,7 @@ struct platform_device *of_find_device_by_node(struct device_node *np)
>  {
>  	struct device *dev;
>  
> -	dev = bus_find_device(&platform_bus_type, NULL, np, of_dev_node_match);
> +	dev = bus_find_device_by_of_node(&platform_bus_type, np);
>  	return dev ? to_platform_device(dev) : NULL;
>  }
>  EXPORT_SYMBOL(of_find_device_by_node);
> diff --git a/drivers/regulator/of_regulator.c b/drivers/regulator/of_regulator.c
> index 397918ebba55..20dcc9c03adc 100644
> --- a/drivers/regulator/of_regulator.c
> +++ b/drivers/regulator/of_regulator.c
> @@ -460,16 +460,11 @@ struct regulator_init_data *regulator_of_get_init_data(struct device *dev,
>  	return NULL;
>  }
>  
> -static int of_node_match(struct device *dev, const void *data)
> -{
> -	return dev->of_node == data;
> -}
> -
>  struct regulator_dev *of_find_regulator_by_node(struct device_node *np)
>  {
>  	struct device *dev;
>  
> -	dev = class_find_device(&regulator_class, NULL, np, of_node_match);
> +	dev = class_find_device_by_of_node(&regulator_class, np);
>  
>  	return dev ? dev_to_rdev(dev) : NULL;
>  }
> diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
> index 75ac046cae52..a591da87981a 100644
> --- a/drivers/spi/spi.c
> +++ b/drivers/spi/spi.c
> @@ -3652,37 +3652,25 @@ EXPORT_SYMBOL_GPL(spi_write_then_read);
>  /*-------------------------------------------------------------------------*/
>  
>  #if IS_ENABLED(CONFIG_OF)
> -static int __spi_of_device_match(struct device *dev, const void *data)
> -{
> -	return dev->of_node == data;
> -}
> -
>  /* must call put_device() when done with returned spi_device device */
>  struct spi_device *of_find_spi_device_by_node(struct device_node *node)
>  {
> -	struct device *dev = bus_find_device(&spi_bus_type, NULL, node,
> -						__spi_of_device_match);
> +	struct device *dev = bus_find_device_by_of_node(&spi_bus_type, node);
> +
>  	return dev ? to_spi_device(dev) : NULL;
>  }
>  EXPORT_SYMBOL_GPL(of_find_spi_device_by_node);
>  #endif /* IS_ENABLED(CONFIG_OF) */
>  
>  #if IS_ENABLED(CONFIG_OF_DYNAMIC)
> -static int __spi_of_controller_match(struct device *dev, const void *data)
> -{
> -	return dev->of_node == data;
> -}
> -
>  /* the spi controllers are not using spi_bus, so we find it with another way */
>  static struct spi_controller *of_find_spi_controller_by_node(struct device_node *node)
>  {
>  	struct device *dev;
>  
> -	dev = class_find_device(&spi_master_class, NULL, node,
> -				__spi_of_controller_match);
> +	dev = class_find_device_by_of_node(&spi_master_class, node);
>  	if (!dev && IS_ENABLED(CONFIG_SPI_SLAVE))
> -		dev = class_find_device(&spi_slave_class, NULL, node,
> -					__spi_of_controller_match);
> +		dev = class_find_device_by_of_node(&spi_slave_class, node);
>  	if (!dev)
>  		return NULL;
>  
> diff --git a/include/linux/device.h b/include/linux/device.h
> index 3ba376b8b456..29d8d7ad41e6 100644
> --- a/include/linux/device.h
> +++ b/include/linux/device.h
> @@ -186,6 +186,18 @@ static inline struct device *bus_find_device_by_name(struct bus_type *bus,
>  	return bus_find_device(bus, start, name, device_match_name);
>  }
>  
> +/**
> + * bus_find_device_by_of_node : device iterator for locating a particular device
> + * matching the of_node.
> + * @bus: bus type
> + * @np: of_node of the device to match.
> + */
> +static inline struct device *
> +bus_find_device_by_of_node(struct bus_type *bus, const struct device_node *np)
> +{
> +	return bus_find_device(bus, NULL, np, device_match_of_node);
> +}
> +
>  struct device *subsys_find_device_by_id(struct bus_type *bus, unsigned int id,
>  					struct device *hint);
>  int bus_for_each_drv(struct bus_type *bus, struct device_driver *start,
> @@ -366,6 +378,19 @@ static inline struct device *driver_find_device_by_name(struct device_driver *dr
>  	return driver_find_device(drv, NULL, name, device_match_name);
>  }
>  
> +/**
> + * driver_find_device_by_of_node- device iterator for locating a particular device
> + * by of_node pointer.
> + * @driver: the driver we're iterating
> + * @np: of_node pointer to match.
> + */
> +static inline struct device *
> +driver_find_device_by_of_node(struct device_driver *drv,
> +			      const struct device_node *np)
> +{
> +	return driver_find_device(drv, NULL, np, device_match_of_node);
> +}
> +
>  void driver_deferred_probe_add(struct device *dev);
>  int driver_deferred_probe_check_state(struct device *dev);
>  int driver_deferred_probe_check_state_continue(struct device *dev);
> @@ -507,6 +532,18 @@ static inline struct device *class_find_device_by_name(struct class *class,
>  	return class_find_device(class, NULL, name, device_match_name);
>  }
>  
> +/**
> + * class_find_device_by_of_node : device iterator for locating a particular device
> + * matching the of_node.
> + * @class: class type
> + * @np: of_node of the device to match.
> + */
> +static inline struct device *
> +class_find_device_by_of_node(struct class *class, const struct device_node *np)
> +{
> +	return class_find_device(class, NULL, np, device_match_of_node);
> +}
> +
>  struct class_attribute {
>  	struct attribute attr;
>  	ssize_t (*show)(struct class *class, struct class_attribute *attr,
> diff --git a/sound/soc/rockchip/rk3399_gru_sound.c b/sound/soc/rockchip/rk3399_gru_sound.c
> index c16b0ffe8cfc..d951100bf770 100644
> --- a/sound/soc/rockchip/rk3399_gru_sound.c
> +++ b/sound/soc/rockchip/rk3399_gru_sound.c
> @@ -422,11 +422,6 @@ static const struct dailink_match_data dailink_match[] = {
>  	},
>  };
>  
> -static int of_dev_node_match(struct device *dev, const void *data)
> -{
> -	return dev->of_node == data;
> -}
> -
>  static int rockchip_sound_codec_node_match(struct device_node *np_codec)
>  {
>  	struct device *dev;
> @@ -438,8 +433,8 @@ static int rockchip_sound_codec_node_match(struct device_node *np_codec)
>  			continue;
>  
>  		if (dailink_match[i].bus_type) {
> -			dev = bus_find_device(dailink_match[i].bus_type, NULL,
> -					      np_codec, of_dev_node_match);
> +			dev = bus_find_device_by_of_node(dailink_match[i].bus_type,
> +							 np_codec);
>  			if (!dev)
>  				continue;
>  			put_device(dev);
> -- 
> 2.21.0
> 

Thanks,
Moritz

Re: [PATCH v3 2/7] drivers: Introduce device lookup variants by of_node

[Mark Brown]

[-- Attachment #1.1: Type: text/plain, Size: 203 bytes --]

On Tue, Jul 23, 2019 at 11:18:33PM +0100, Suzuki K Poulose wrote:
> Introduce wrappers for {bus/driver/class}_find_device() to
> locate devices by its of_node.

Acked-by: Mark Brown <broonie@kernel.org>

[-- Attachment #1.2: signature.asc --]
[-- Type: application/pgp-signature, Size: 488 bytes --]

[-- Attachment #2: Type: text/plain, Size: 159 bytes --]

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Re: [PATCH v3 2/7] drivers: Introduce device lookup variants by of_node

[Greg KH]

On Thu, Jul 25, 2019 at 02:54:02PM +0100, Lee Jones wrote:
> On Tue, 23 Jul 2019, Suzuki K Poulose wrote:
> 
> > Introduce wrappers for {bus/driver/class}_find_device() to
> > locate devices by its of_node.
> > 
> > Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
> > Cc: Maxime Ripard <maxime.ripard@bootlin.com>
> > Cc: dri-devel@lists.freedesktop.org
> > Cc: David Airlie <airlied@linux.ie>
> > Cc: Daniel Vetter <daniel@ffwll.ch>
> > Cc: devicetree@vger.kernel.org
> > Cc: Florian Fainelli <f.fainelli@gmail.com>
> > Cc: Frank Rowand <frowand.list@gmail.com>
> > Cc: Heiko Stuebner <heiko@sntech.de>
> > Cc: Liam Girdwood <lgirdwood@gmail.com>
> > Cc: linux-i2c@vger.kernel.org
> > Cc: linux-rockchip@lists.infradead.org
> > Cc: linux-spi@vger.kernel.org
> > Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
> > Cc: Rob Herring <robh+dt@kernel.org>
> > Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
> > Cc: Takashi Iwai <tiwai@suse.com>
> > Cc: Wolfram Sang <wsa@the-dreams.de>
> > Cc: Alan Tull <atull@kernel.org>
> > Cc: Moritz Fischer <mdf@kernel.org>
> > Cc: linux-fpga@vger.kernel.org
> > Cc: Peter Rosin <peda@axentia.se>
> > Cc: Mark Brown <broonie@kernel.org>
> > Cc: Florian Fainelli <f.fainelli@gmail.com>
> > Cc: Heiner Kallweit <hkallweit1@gmail.com>
> > Cc: "David S. Miller" <davem@davemloft.net>
> > Cc: Andrew Lunn <andrew@lunn.ch>
> > Cc: Liam Girdwood <lgirdwood@gmail.com>
> > Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> > Cc: "Rafael J. Wysocki" <rafael@kernel.org>
> > Cc: Lee Jones <lee.jones@linaro.org>
> > Cc: Thor Thayer <thor.thayer@linux.intel.com>
> > Cc: Jiri Slaby <jslaby@suse.com>
> > Cc: Mark Brown <broonie@kernel.org>
> > Cc: Andrew Lunn <andrew@lunn.ch>
> > Cc: Peter Rosin <peda@axentia.se>
> > Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
> > ---
> >  - Dropped the reviewed-by tags from Thor, Mark, Andrew and Peter as the
> >    patches are mereged, though there are no functional changes.
> > ---
> >  drivers/amba/tegra-ahb.c              | 11 +-------
> >  drivers/fpga/fpga-bridge.c            |  8 +-----
> >  drivers/fpga/fpga-mgr.c               |  8 +-----
> >  drivers/gpu/drm/drm_mipi_dsi.c        |  7 +----
> >  drivers/i2c/i2c-core-of.c             |  7 +----
> >  drivers/mfd/altera-sysmgr.c           | 14 ++--------
> 
> For my own reference:
>   Acked-for-MFD-by: Lee Jones <lee.jones@linaro.org>
> 
> What's the merge plan for this patch?
> 
> Is anyone prepared to create an immutable branch for us to pull from?
> I'm happy to do it if no one else steps up.

I'll take it, and create a branch for everyone to pull from.

thanks,

greg k-h
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Re: [PATCH v3 0/7] drivers: Add generic device lookup helpers

[Greg KH]

On Tue, Jul 23, 2019 at 11:18:31PM +0100, Suzuki K Poulose wrote:
> We have device iterators to find a particular device matching a criteria
> for a given bus/class/driver. i.e, {bus,class,driver}_find_device()
> APIs. The matching criteria is a function pointer for the APIs. Often the
> lookup is based on a generic property of a device (e.g, name, fwnode, of node
> pointer or device type) rather than a driver specific information. However, each
> driver writes up its own "match" function, spilling the similar match functions
> all over the driver subsystems.
> 
> This series adds device match helpers by generic device properties of a device.
> Using these generic match functions, introduce wrappers to the existing
>  *_find_device() helpers and converts the existing users to use the new wrappers.
>  i.e,
> 	{bus/class/driver}_find_device_by_name()
> 	{bus/class/driver}_find_device_by_fwnode()
> 	{bus/class/driver}_find_device_by_devt()
> 	{bus/class/driver}_find_device_by_acpi_dev()
> 
> Also adds a wrapper for finding a platform device by driver, to avoid
> spilling the platform_bus internals in the individual drivers. Applies
> on 5.3-rc1.
> 
>    [0] git://linux-arm.org/linux-skp.git driver-cleanup/v3
> RFC[1] https://marc.info/?i=1559577023-558-1-git-send-email-suzuki.poulose@arm.com
> V1 [2] https://marc.info/?i=1559747630-28065-1-git-send-email-suzuki.poulose@arm.com
> V2 [3] https://marc.info/?i=1560534863-15115-1-git-send-email-suzuki.poulose@arm.com

There is now a persistent tag/branch in my driver-core tree for any
subsystem that wants to pull this tree in to make it easier for merges:


The following changes since commit 5f9e832c137075045d15cd6899ab0505cfb2ca4b:

  Linus 5.3-rc1 (2019-07-21 14:05:38 -0700)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core.git tags/generic_lookup_helpers

for you to fetch changes up to 36f3313d6bff91ab2a9e47698c27d15363640a4e:

  platform: Add platform_find_device_by_driver() helper (2019-07-30 13:07:42 +0200)

----------------------------------------------------------------
Generic Device Lookup Helpers

Persistent tag for others to pull this branch from

Based on patch series from Suzuki K Poulose <suzuki.poulose@arm.com>
with Subject: [PATCH v3 0/7] drivers: Add generic device lookup helpers

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

----------------------------------------------------------------
Suzuki K Poulose (7):
      drivers: Introduce device lookup variants by name
      drivers: Introduce device lookup variants by of_node
      drivers: Introduce device lookup variants by fwnode
      drivers: Introduce device lookup variants by device type
      drivers: Introduce device lookup variants by ACPI_COMPANION device
      drivers: Add generic helper to match any device
      platform: Add platform_find_device_by_driver() helper

 drivers/amba/tegra-ahb.c                           |  11 +-
 drivers/base/bus.c                                 |  24 ---
 drivers/base/core.c                                |  39 +++-
 drivers/base/devcon.c                              |   8 +-
 drivers/base/platform.c                            |  14 ++
 drivers/fpga/fpga-bridge.c                         |   8 +-
 drivers/fpga/fpga-mgr.c                            |   8 +-
 drivers/gpu/drm/drm_mipi_dsi.c                     |   7 +-
 drivers/gpu/drm/exynos/exynos_drm_drv.c            |   9 +-
 drivers/gpu/drm/mcde/mcde_drv.c                    |   3 +-
 drivers/gpu/drm/rockchip/rockchip_drm_drv.c        |   3 +-
 drivers/gpu/drm/vc4/vc4_drv.c                      |   3 +-
 drivers/hwtracing/coresight/coresight-platform.c   |  11 +-
 drivers/hwtracing/coresight/coresight-priv.h       |   2 -
 drivers/hwtracing/coresight/coresight.c            |   4 +-
 drivers/hwtracing/intel_th/core.c                  |  10 +-
 drivers/hwtracing/stm/core.c                       |   9 +-
 drivers/i2c/busses/i2c-amd-mp2-pci.c               |   8 +-
 drivers/i2c/i2c-core-acpi.c                        |  11 +-
 drivers/i2c/i2c-core-of.c                          |   7 +-
 drivers/infiniband/hw/hns/hns_roce_hw_v1.c         |   8 +-
 drivers/iommu/arm-smmu-v3.c                        |   9 +-
 drivers/iommu/arm-smmu.c                           |   9 +-
 drivers/leds/led-class.c                           |   9 +-
 drivers/mfd/altera-sysmgr.c                        |  14 +-
 drivers/misc/mei/main.c                            |   9 +-
 drivers/mux/core.c                                 |   7 +-
 drivers/net/ethernet/hisilicon/hns/hns_dsaf_misc.c |   8 +-
 drivers/net/phy/mdio_bus.c                         |   9 +-
 drivers/nvmem/core.c                               |   7 +-
 drivers/of/of_mdio.c                               |   8 +-
 drivers/of/platform.c                              |   7 +-
 drivers/pci/probe.c                                |   7 +-
 drivers/regulator/of_regulator.c                   |   7 +-
 drivers/rtc/interface.c                            |  11 +-
 drivers/s390/cio/ccwgroup.c                        |  18 +-
 drivers/s390/cio/device.c                          |  15 +-
 drivers/s390/crypto/zcrypt_api.c                   |  22 +-
 drivers/scsi/scsi_proc.c                           |   9 +-
 drivers/spi/spi.c                                  |  28 +--
 drivers/tty/tty_io.c                               |   8 +-
 drivers/usb/core/devio.c                           |   8 +-
 drivers/usb/roles/class.c                          |  16 +-
 drivers/usb/typec/class.c                          |  16 +-
 include/linux/device.h                             | 237 ++++++++++++++++++++-
 include/linux/platform_device.h                    |   3 +
 net/ieee802154/core.c                              |   7 +-
 sound/soc/rockchip/rk3399_gru_sound.c              |   9 +-
 48 files changed, 341 insertions(+), 383 deletions(-)
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