[PATCH v3 00/22] Verbatim device names and devm_nvmem_(un)register()

[PATCH v3 00/22] Verbatim device names and devm_nvmem_(un)register()

[Andrey Smirnov]

Srinivas, all:

This patchset contains various small changes that I recently made to
NVMEM, more specifically:

 - Patches 1 and 3 are two changes I am hoping are acceptable upstream

 - Patches 4 to 15 are a follow up to patch 2

 - Patches 16 to 22 are just trivial fixups and I am more than happy
   to drop them if they seem to add more pointless churn rather then
   value.

Feedback is appreciated!

Thanks,
Andrey Smirnov

Changes since [v2]:

 - Added a patch with kerenl doc for struct nvmem_config as a
   prerequsite for patch #2

 - Documented behaviour of nvmem_register() when id is set to -1

 - Added kernel doc for devm_nvmem_(un)register()


Changes since [v1]:

 - Fixed a build break detected by kbuild test robot

 - Added a patch to unconditionally enable COMPILE_TEST for meson-efuse

 - Dropped Joachim Eastwood from CC list due to bouncing e-mail

[v2] lkml.kernel.org/r/20180101232310.30420-1-andrew.smirnov@gmail.com
[v1] lkml.kernel.org/r/20171227225956.14442-1-andrew.smirnov@gmail.com


Andrey Smirnov (22):
  nvmem: Document struct nvmem_config
  nvmem: core: Allow specifying device name verbatim
  nvmem: Introduce devm_nvmem_(un)register()
  nvmem: vf610-ocotp: Convert to use devm_nvmem_register()
  nvmem: imx-ocotp: Convert to use devm_nvmem_register()
  nvmem: uniphier-efuse: Convert to use devm_nvmem_register()
  nvmem: snvs_lgpr: Convert to use devm_nvmem_register()
  nvmem: rockchip-efuse: Convert to use devm_nvmem_register()
  nvmem: qfprom: Convert to use devm_nvmem_register()
  nvmem: mtk-efuse: Convert to use devm_nvmem_register()
  nvmem: meson-mx-efuse: Convert to use devm_nvmem_register()
  nvmem: meson-efuse: Convert to use devm_nvmem_register()
  nvmem: lpc18xx_otp: Convert to use devm_nvmem_register()
  nvmem: imx-iim: Convert to use devm_nvmem_register()
  nvmem: bcm-ocotp: Convert to use devm_nvmem_register()
  nvmem: meson-efuse: Do no gate COMPILE_TEST with MESON_SM
  nvmem: snvs_lpgpr: Convert commas to semicolons
  nvmem: rockchip-efuse: Make use of of_device_get_match_data()
  nvmem: vf610-ocotp: Do not use "&pdev->dev" explicitly
  nvmem: rockchip-efuse: Do not use "&pdev->dev" explicitly
  nvmem: imx-iim: Do not use "&pdev->dev" explicitly
  nvmem: bcm-ocotp: Do not use "&pdev->dev" explicitly

 drivers/nvmem/Kconfig          |  2 +-
 drivers/nvmem/bcm-ocotp.c      | 15 ++--------
 drivers/nvmem/core.c           | 68 ++++++++++++++++++++++++++++++++++++++++--
 drivers/nvmem/imx-iim.c        | 14 ++-------
 drivers/nvmem/imx-ocotp.c      | 12 +-------
 drivers/nvmem/lpc18xx_otp.c    | 12 +-------
 drivers/nvmem/meson-efuse.c    | 12 +-------
 drivers/nvmem/meson-mx-efuse.c | 12 +-------
 drivers/nvmem/mtk-efuse.c      | 12 +-------
 drivers/nvmem/qfprom.c         | 12 +-------
 drivers/nvmem/rockchip-efuse.c | 28 ++++++-----------
 drivers/nvmem/snvs_lpgpr.c     | 26 +++++-----------
 drivers/nvmem/uniphier-efuse.c | 12 +-------
 drivers/nvmem/vf610-ocotp.c    | 15 ++--------
 include/linux/nvmem-provider.h | 42 ++++++++++++++++++++++++++
 15 files changed, 138 insertions(+), 156 deletions(-)

-- 
2.14.3

[PATCH v3 01/22] nvmem: Document struct nvmem_config

[Andrey Smirnov]

Add a simple description of struct nvmem_config and its fields.

Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Cc: Heiko Stuebner <heiko@sntech.de>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Carlo Caione <carlo@caione.org>
Cc: Kevin Hilman <khilman@baylibre.com>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: cphealy@gmail.com
Cc: linux-kernel@vger.kernel.org
Cc: linux-mediatek@lists.infradead.org
Cc: linux-rockchip@lists.infradead.org
Cc: linux-amlogic@lists.infradead.org
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
---
 include/linux/nvmem-provider.h | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/include/linux/nvmem-provider.h b/include/linux/nvmem-provider.h
index 497706f5adca..27e599222ec1 100644
--- a/include/linux/nvmem-provider.h
+++ b/include/linux/nvmem-provider.h
@@ -22,6 +22,28 @@ typedef int (*nvmem_reg_read_t)(void *priv, unsigned int offset,
 typedef int (*nvmem_reg_write_t)(void *priv, unsigned int offset,
 				 void *val, size_t bytes);
 
+/**
+ * struct nvmem_config - NVMEM device configuration
+ *
+ * @dev:	Parent device.
+ * @name:	Optional name.
+ * @id:		Optional device ID used in full name. Ignored if name is NULL.
+ * @owner:	Pointer to exporter module. Used for refcounting.
+ * @cells:	Optional array of pre-defined NVMEM cells.
+ * @ncells:	Number of elements in cells.
+ * @read_only:	Device is read-only.
+ * @root_only:	Device is accessibly to root only.
+ * @reg_read:	Callback to read data.
+ * @reg_write:	Callback to write data.
+ * @size:	Device size.
+ * @word_size:	Minimum read/write access granularity.
+ * @stride:	Minimum read/write access stide.
+ * @priv:	User context passed to read/write callbacks.
+ *
+ * Note: A default "nvmem<id>" name will be assigned to the device if
+ * no name is specified in its configuration. In such case "<id>" is
+ * generated with ida_simple_get() and provided id field is ignored.
+ */
 struct nvmem_config {
 	struct device		*dev;
 	const char		*name;
-- 
2.14.3

[PATCH v3 02/22] nvmem: core: Allow specifying device name verbatim

[Andrey Smirnov]

Add code to allow avoid having nvmem core append a numeric suffix to
the end of the name by passing config->id of -1.

Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Cc: Heiko Stuebner <heiko@sntech.de>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Carlo Caione <carlo@caione.org>
Cc: Kevin Hilman <khilman@baylibre.com>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: cphealy@gmail.com
Cc: linux-kernel@vger.kernel.org
Cc: linux-mediatek@lists.infradead.org
Cc: linux-rockchip@lists.infradead.org
Cc: linux-amlogic@lists.infradead.org
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
---
 drivers/nvmem/core.c           | 11 ++++++++---
 include/linux/nvmem-provider.h |  3 +++
 2 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c
index 5a5cefd12153..57cbeacfbeb2 100644
--- a/drivers/nvmem/core.c
+++ b/drivers/nvmem/core.c
@@ -475,9 +475,14 @@ struct nvmem_device *nvmem_register(const struct nvmem_config *config)
 	nvmem->reg_write = config->reg_write;
 	np = config->dev->of_node;
 	nvmem->dev.of_node = np;
-	dev_set_name(&nvmem->dev, "%s%d",
-		     config->name ? : "nvmem",
-		     config->name ? config->id : nvmem->id);
+
+	if (config->id == -1 && config->name) {
+		dev_set_name(&nvmem->dev, "%s", config->name);
+	} else {
+		dev_set_name(&nvmem->dev, "%s%d",
+			     config->name ? : "nvmem",
+			     config->name ? config->id : nvmem->id);
+	}
 
 	nvmem->read_only = of_property_read_bool(np, "read-only") |
 			   config->read_only;
diff --git a/include/linux/nvmem-provider.h b/include/linux/nvmem-provider.h
index 27e599222ec1..4889a6c62a81 100644
--- a/include/linux/nvmem-provider.h
+++ b/include/linux/nvmem-provider.h
@@ -43,6 +43,9 @@ typedef int (*nvmem_reg_write_t)(void *priv, unsigned int offset,
  * Note: A default "nvmem<id>" name will be assigned to the device if
  * no name is specified in its configuration. In such case "<id>" is
  * generated with ida_simple_get() and provided id field is ignored.
+ *
+ * Note: Specifying name and setting id to -1 implies a unique device
+ * whose name is provided as-is (kept unaltered).
  */
 struct nvmem_config {
 	struct device		*dev;
-- 
2.14.3

[PATCH v3 03/22] nvmem: Introduce devm_nvmem_(un)register()

[Andrey Smirnov]

Introduce devm_nvmem_register()/devm_nvmem_unregister() to make
.remove() unnecessary in trivial drivers.

Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Cc: Heiko Stuebner <heiko@sntech.de>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Carlo Caione <carlo@caione.org>
Cc: Kevin Hilman <khilman@baylibre.com>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: cphealy@gmail.com
Cc: linux-kernel@vger.kernel.org
Cc: linux-mediatek@lists.infradead.org
Cc: linux-rockchip@lists.infradead.org
Cc: linux-amlogic@lists.infradead.org
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
---
 drivers/nvmem/core.c           | 57 ++++++++++++++++++++++++++++++++++++++++++
 include/linux/nvmem-provider.h | 17 +++++++++++++
 2 files changed, 74 insertions(+)

diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c
index 57cbeacfbeb2..1f387a2d915f 100644
--- a/drivers/nvmem/core.c
+++ b/drivers/nvmem/core.c
@@ -551,6 +551,63 @@ int nvmem_unregister(struct nvmem_device *nvmem)
 }
 EXPORT_SYMBOL_GPL(nvmem_unregister);
 
+static void devm_nvmem_release(struct device *dev, void *res)
+{
+	WARN_ON(nvmem_unregister(*(struct nvmem_device **)res));
+}
+
+/**
+ * devm_nvmem_register() - Register a managed nvmem device for given nvmem_config.
+ * Also creates an binary entry in /sys/bus/nvmem/devices/dev-name/nvmem
+ *
+ * @config: nvmem device configuration with which nvmem device is created.
+ *
+ * Return: Will be an ERR_PTR() on error or a valid pointer to nvmem_device
+ * on success.
+ */
+struct nvmem_device *devm_nvmem_register(struct device *dev,
+					 const struct nvmem_config *config)
+{
+	struct nvmem_device **ptr, *nvmem;
+
+	ptr = devres_alloc(devm_nvmem_release, sizeof(*ptr), GFP_KERNEL);
+	if (!ptr)
+		return ERR_PTR(-ENOMEM);
+
+	nvmem = nvmem_register(config);
+
+	if (!IS_ERR(nvmem)) {
+		*ptr = nvmem;
+		devres_add(dev, ptr);
+	} else {
+		devres_free(ptr);
+	}
+
+	return nvmem;
+}
+EXPORT_SYMBOL_GPL(devm_nvmem_register);
+
+static int devm_nvmem_match(struct device *dev, void *res, void *data)
+{
+	struct nvmem_device **r = res;
+
+	return *r == data;
+}
+
+/**
+ * devm_nvmem_unregister() - Unregister previously registered managed nvmem device
+ *
+ * @nvmem: Pointer to previously registered nvmem device.
+ *
+ * Return: Will be an negative on error or a zero on success.
+ */
+int devm_nvmem_unregister(struct device *dev, struct nvmem_device *nvmem)
+{
+	return devres_release(dev, devm_nvmem_release, devm_nvmem_match, nvmem);
+}
+EXPORT_SYMBOL(devm_nvmem_unregister);
+
+
 static struct nvmem_device *__nvmem_device_get(struct device_node *np,
 					       struct nvmem_cell **cellp,
 					       const char *cell_id)
diff --git a/include/linux/nvmem-provider.h b/include/linux/nvmem-provider.h
index 4889a6c62a81..7f2f610c6eea 100644
--- a/include/linux/nvmem-provider.h
+++ b/include/linux/nvmem-provider.h
@@ -72,6 +72,11 @@ struct nvmem_config {
 struct nvmem_device *nvmem_register(const struct nvmem_config *cfg);
 int nvmem_unregister(struct nvmem_device *nvmem);
 
+struct nvmem_device *devm_nvmem_register(struct device *dev,
+					 const struct nvmem_config *cfg);
+
+int devm_nvmem_unregister(struct device *dev, struct nvmem_device *nvmem);
+
 #else
 
 static inline struct nvmem_device *nvmem_register(const struct nvmem_config *c)
@@ -84,5 +89,17 @@ static inline int nvmem_unregister(struct nvmem_device *nvmem)
 	return -ENOSYS;
 }
 
+static inline struct nvmem_device *
+devm_nvmem_register(struct device *dev, const struct nvmem_config *c)
+{
+	return nvmem_register(c);
+}
+
+static inline int
+devm_nvmem_unregister(struct device *dev, struct nvmem_device *nvmem)
+{
+	return nvmem_unregister(nvmem);
+}
+
 #endif /* CONFIG_NVMEM */
 #endif  /* ifndef _LINUX_NVMEM_PROVIDER_H */
-- 
2.14.3

[PATCH v3 04/22] nvmem: vf610-ocotp: Convert to use devm_nvmem_register()

[Andrey Smirnov]

Drop all of the code related to .remove hook and make use of
devm_nvmem_register() instead.

Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Cc: Heiko Stuebner <heiko@sntech.de>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Carlo Caione <carlo@caione.org>
Cc: Kevin Hilman <khilman@baylibre.com>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: cphealy@gmail.com
Cc: linux-kernel@vger.kernel.org
Cc: linux-mediatek@lists.infradead.org
Cc: linux-rockchip@lists.infradead.org
Cc: linux-amlogic@lists.infradead.org
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
---
 drivers/nvmem/vf610-ocotp.c | 12 +-----------
 1 file changed, 1 insertion(+), 11 deletions(-)

diff --git a/drivers/nvmem/vf610-ocotp.c b/drivers/nvmem/vf610-ocotp.c
index 5ae9e002f195..752a0983e7fb 100644
--- a/drivers/nvmem/vf610-ocotp.c
+++ b/drivers/nvmem/vf610-ocotp.c
@@ -217,13 +217,6 @@ static const struct of_device_id ocotp_of_match[] = {
 };
 MODULE_DEVICE_TABLE(of, ocotp_of_match);
 
-static int vf610_ocotp_remove(struct platform_device *pdev)
-{
-	struct vf610_ocotp *ocotp_dev = platform_get_drvdata(pdev);
-
-	return nvmem_unregister(ocotp_dev->nvmem);
-}
-
 static int vf610_ocotp_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
@@ -251,13 +244,11 @@ static int vf610_ocotp_probe(struct platform_device *pdev)
 	ocotp_config.priv = ocotp_dev;
 	ocotp_config.dev = dev;
 
-	ocotp_dev->nvmem = nvmem_register(&ocotp_config);
+	ocotp_dev->nvmem = devm_nvmem_register(dev, &ocotp_config);
 	if (IS_ERR(ocotp_dev->nvmem))
 		return PTR_ERR(ocotp_dev->nvmem);
 
 	ocotp_dev->dev = dev;
-	platform_set_drvdata(pdev, ocotp_dev);
-
 	ocotp_dev->timing = vf610_ocotp_calculate_timing(ocotp_dev);
 
 	return 0;
@@ -265,7 +256,6 @@ static int vf610_ocotp_probe(struct platform_device *pdev)
 
 static struct platform_driver vf610_ocotp_driver = {
 	.probe = vf610_ocotp_probe,
-	.remove = vf610_ocotp_remove,
 	.driver = {
 		.name = "vf610-ocotp",
 		.of_match_table = ocotp_of_match,
-- 
2.14.3

[PATCH v3 05/22] nvmem: imx-ocotp: Convert to use devm_nvmem_register()

[Andrey Smirnov]

Drop all of the code related to .remove hook and make use of
devm_nvmem_register() instead.

Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Cc: Heiko Stuebner <heiko@sntech.de>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Carlo Caione <carlo@caione.org>
Cc: Kevin Hilman <khilman@baylibre.com>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: cphealy@gmail.com
Cc: linux-kernel@vger.kernel.org
Cc: linux-mediatek@lists.infradead.org
Cc: linux-rockchip@lists.infradead.org
Cc: linux-amlogic@lists.infradead.org
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
---
 drivers/nvmem/imx-ocotp.c | 12 +-----------
 1 file changed, 1 insertion(+), 11 deletions(-)

diff --git a/drivers/nvmem/imx-ocotp.c b/drivers/nvmem/imx-ocotp.c
index d7ba351a70c9..68deffe636f3 100644
--- a/drivers/nvmem/imx-ocotp.c
+++ b/drivers/nvmem/imx-ocotp.c
@@ -466,26 +466,16 @@ static int imx_ocotp_probe(struct platform_device *pdev)
 	imx_ocotp_nvmem_config.dev = dev;
 	imx_ocotp_nvmem_config.priv = priv;
 	priv->config = &imx_ocotp_nvmem_config;
-	nvmem = nvmem_register(&imx_ocotp_nvmem_config);
+	nvmem = devm_nvmem_register(dev, &imx_ocotp_nvmem_config);
 
 	if (IS_ERR(nvmem))
 		return PTR_ERR(nvmem);
 
-	platform_set_drvdata(pdev, nvmem);
-
 	return 0;
 }
 
-static int imx_ocotp_remove(struct platform_device *pdev)
-{
-	struct nvmem_device *nvmem = platform_get_drvdata(pdev);
-
-	return nvmem_unregister(nvmem);
-}
-
 static struct platform_driver imx_ocotp_driver = {
 	.probe	= imx_ocotp_probe,
-	.remove	= imx_ocotp_remove,
 	.driver = {
 		.name	= "imx_ocotp",
 		.of_match_table = imx_ocotp_dt_ids,
-- 
2.14.3

[PATCH v3 06/22] nvmem: uniphier-efuse: Convert to use devm_nvmem_register()

[Andrey Smirnov]

Drop all of the code related to .remove hook and make use of
devm_nvmem_register() instead.

Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Cc: Heiko Stuebner <heiko@sntech.de>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Carlo Caione <carlo@caione.org>
Cc: Kevin Hilman <khilman@baylibre.com>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: cphealy@gmail.com
Cc: linux-kernel@vger.kernel.org
Cc: linux-mediatek@lists.infradead.org
Cc: linux-rockchip@lists.infradead.org
Cc: linux-amlogic@lists.infradead.org
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
---
 drivers/nvmem/uniphier-efuse.c | 12 +-----------
 1 file changed, 1 insertion(+), 11 deletions(-)

diff --git a/drivers/nvmem/uniphier-efuse.c b/drivers/nvmem/uniphier-efuse.c
index 9d278b4e1dc7..7ddc6fc012c9 100644
--- a/drivers/nvmem/uniphier-efuse.c
+++ b/drivers/nvmem/uniphier-efuse.c
@@ -60,22 +60,13 @@ static int uniphier_efuse_probe(struct platform_device *pdev)
 	econfig.size = resource_size(res);
 	econfig.priv = priv;
 	econfig.dev = dev;
-	nvmem = nvmem_register(&econfig);
+	nvmem = devm_nvmem_register(dev, &econfig);
 	if (IS_ERR(nvmem))
 		return PTR_ERR(nvmem);
 
-	platform_set_drvdata(pdev, nvmem);
-
 	return 0;
 }
 
-static int uniphier_efuse_remove(struct platform_device *pdev)
-{
-	struct nvmem_device *nvmem = platform_get_drvdata(pdev);
-
-	return nvmem_unregister(nvmem);
-}
-
 static const struct of_device_id uniphier_efuse_of_match[] = {
 	{ .compatible = "socionext,uniphier-efuse",},
 	{/* sentinel */},
@@ -84,7 +75,6 @@ MODULE_DEVICE_TABLE(of, uniphier_efuse_of_match);
 
 static struct platform_driver uniphier_efuse_driver = {
 	.probe = uniphier_efuse_probe,
-	.remove = uniphier_efuse_remove,
 	.driver = {
 		.name = "uniphier-efuse",
 		.of_match_table = uniphier_efuse_of_match,
-- 
2.14.3

[PATCH v3 07/22] nvmem: snvs_lgpr: Convert to use devm_nvmem_register()

[Andrey Smirnov]

Drop all of the code related to .remove hook and make use of
devm_nvmem_register() instead.

Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Cc: Heiko Stuebner <heiko@sntech.de>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Carlo Caione <carlo@caione.org>
Cc: Kevin Hilman <khilman@baylibre.com>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: cphealy@gmail.com
Cc: linux-kernel@vger.kernel.org
Cc: linux-mediatek@lists.infradead.org
Cc: linux-rockchip@lists.infradead.org
Cc: linux-amlogic@lists.infradead.org
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
---
 drivers/nvmem/snvs_lpgpr.c | 12 +-----------
 1 file changed, 1 insertion(+), 11 deletions(-)

diff --git a/drivers/nvmem/snvs_lpgpr.c b/drivers/nvmem/snvs_lpgpr.c
index e5c2a4a17f03..6a2fdd09e74a 100644
--- a/drivers/nvmem/snvs_lpgpr.c
+++ b/drivers/nvmem/snvs_lpgpr.c
@@ -117,22 +117,13 @@ static int snvs_lpgpr_probe(struct platform_device *pdev)
 	cfg->reg_read  = snvs_lpgpr_read,
 	cfg->reg_write = snvs_lpgpr_write,
 
-	nvmem = nvmem_register(cfg);
+	nvmem = devm_nvmem_register(dev, cfg);
 	if (IS_ERR(nvmem))
 		return PTR_ERR(nvmem);
 
-	platform_set_drvdata(pdev, nvmem);
-
 	return 0;
 }
 
-static int snvs_lpgpr_remove(struct platform_device *pdev)
-{
-	struct nvmem_device *nvmem = platform_get_drvdata(pdev);
-
-	return nvmem_unregister(nvmem);
-}
-
 static const struct of_device_id snvs_lpgpr_dt_ids[] = {
 	{ .compatible = "fsl,imx6q-snvs-lpgpr", .data = &snvs_lpgpr_cfg_imx6q },
 	{ .compatible = "fsl,imx6ul-snvs-lpgpr",
@@ -143,7 +134,6 @@ MODULE_DEVICE_TABLE(of, snvs_lpgpr_dt_ids);
 
 static struct platform_driver snvs_lpgpr_driver = {
 	.probe	= snvs_lpgpr_probe,
-	.remove	= snvs_lpgpr_remove,
 	.driver = {
 		.name	= "snvs_lpgpr",
 		.of_match_table = snvs_lpgpr_dt_ids,
-- 
2.14.3

[PATCH v3 08/22] nvmem: rockchip-efuse: Convert to use devm_nvmem_register()

[Andrey Smirnov]

Drop all of the code related to .remove hook and make use of
devm_nvmem_register() instead.

Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Cc: Heiko Stuebner <heiko@sntech.de>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Carlo Caione <carlo@caione.org>
Cc: Kevin Hilman <khilman@baylibre.com>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: cphealy@gmail.com
Cc: linux-kernel@vger.kernel.org
Cc: linux-mediatek@lists.infradead.org
Cc: linux-rockchip@lists.infradead.org
Cc: linux-amlogic@lists.infradead.org
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
---
 drivers/nvmem/rockchip-efuse.c | 12 +-----------
 1 file changed, 1 insertion(+), 11 deletions(-)

diff --git a/drivers/nvmem/rockchip-efuse.c b/drivers/nvmem/rockchip-efuse.c
index 123de77ca5d6..d6dc1330f895 100644
--- a/drivers/nvmem/rockchip-efuse.c
+++ b/drivers/nvmem/rockchip-efuse.c
@@ -221,25 +221,15 @@ static int rockchip_efuse_probe(struct platform_device *pdev)
 	econfig.reg_read = match->data;
 	econfig.priv = efuse;
 	econfig.dev = efuse->dev;
-	nvmem = nvmem_register(&econfig);
+	nvmem = devm_nvmem_register(dev, &econfig);
 	if (IS_ERR(nvmem))
 		return PTR_ERR(nvmem);
 
-	platform_set_drvdata(pdev, nvmem);
-
 	return 0;
 }
 
-static int rockchip_efuse_remove(struct platform_device *pdev)
-{
-	struct nvmem_device *nvmem = platform_get_drvdata(pdev);
-
-	return nvmem_unregister(nvmem);
-}
-
 static struct platform_driver rockchip_efuse_driver = {
 	.probe = rockchip_efuse_probe,
-	.remove = rockchip_efuse_remove,
 	.driver = {
 		.name = "rockchip-efuse",
 		.of_match_table = rockchip_efuse_match,
-- 
2.14.3

[PATCH v3 09/22] nvmem: qfprom: Convert to use devm_nvmem_register()

[Andrey Smirnov]

Drop all of the code related to .remove hook and make use of
devm_nvmem_register() instead.

Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Cc: Heiko Stuebner <heiko@sntech.de>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Carlo Caione <carlo@caione.org>
Cc: Kevin Hilman <khilman@baylibre.com>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: cphealy@gmail.com
Cc: linux-kernel@vger.kernel.org
Cc: linux-mediatek@lists.infradead.org
Cc: linux-rockchip@lists.infradead.org
Cc: linux-amlogic@lists.infradead.org
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
---
 drivers/nvmem/qfprom.c | 12 +-----------
 1 file changed, 1 insertion(+), 11 deletions(-)

diff --git a/drivers/nvmem/qfprom.c b/drivers/nvmem/qfprom.c
index cb3b48b47d64..13bf43c84bd4 100644
--- a/drivers/nvmem/qfprom.c
+++ b/drivers/nvmem/qfprom.c
@@ -47,13 +47,6 @@ static int qfprom_reg_write(void *context,
 	return 0;
 }
 
-static int qfprom_remove(struct platform_device *pdev)
-{
-	struct nvmem_device *nvmem = platform_get_drvdata(pdev);
-
-	return nvmem_unregister(nvmem);
-}
-
 static struct nvmem_config econfig = {
 	.name = "qfprom",
 	.stride = 1,
@@ -82,12 +75,10 @@ static int qfprom_probe(struct platform_device *pdev)
 	econfig.dev = dev;
 	econfig.priv = priv;
 
-	nvmem = nvmem_register(&econfig);
+	nvmem = devm_nvmem_register(dev, &econfig);
 	if (IS_ERR(nvmem))
 		return PTR_ERR(nvmem);
 
-	platform_set_drvdata(pdev, nvmem);
-
 	return 0;
 }
 
@@ -99,7 +90,6 @@ MODULE_DEVICE_TABLE(of, qfprom_of_match);
 
 static struct platform_driver qfprom_driver = {
 	.probe = qfprom_probe,
-	.remove = qfprom_remove,
 	.driver = {
 		.name = "qcom,qfprom",
 		.of_match_table = qfprom_of_match,
-- 
2.14.3

[PATCH v3 10/22] nvmem: mtk-efuse: Convert to use devm_nvmem_register()

[Andrey Smirnov]

Drop all of the code related to .remove hook and make use of
devm_nvmem_register() instead.

Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Cc: Heiko Stuebner <heiko@sntech.de>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Carlo Caione <carlo@caione.org>
Cc: Kevin Hilman <khilman@baylibre.com>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: cphealy@gmail.com
Cc: linux-kernel@vger.kernel.org
Cc: linux-mediatek@lists.infradead.org
Cc: linux-rockchip@lists.infradead.org
Cc: linux-amlogic@lists.infradead.org
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
---
 drivers/nvmem/mtk-efuse.c | 12 +-----------
 1 file changed, 1 insertion(+), 11 deletions(-)

diff --git a/drivers/nvmem/mtk-efuse.c b/drivers/nvmem/mtk-efuse.c
index 9ee3479cfc7b..97ab7e6a4789 100644
--- a/drivers/nvmem/mtk-efuse.c
+++ b/drivers/nvmem/mtk-efuse.c
@@ -72,22 +72,13 @@ static int mtk_efuse_probe(struct platform_device *pdev)
 	econfig.size = resource_size(res);
 	econfig.priv = priv;
 	econfig.dev = dev;
-	nvmem = nvmem_register(&econfig);
+	nvmem = devm_nvmem_register(dev, &econfig);
 	if (IS_ERR(nvmem))
 		return PTR_ERR(nvmem);
 
-	platform_set_drvdata(pdev, nvmem);
-
 	return 0;
 }
 
-static int mtk_efuse_remove(struct platform_device *pdev)
-{
-	struct nvmem_device *nvmem = platform_get_drvdata(pdev);
-
-	return nvmem_unregister(nvmem);
-}
-
 static const struct of_device_id mtk_efuse_of_match[] = {
 	{ .compatible = "mediatek,mt8173-efuse",},
 	{ .compatible = "mediatek,efuse",},
@@ -97,7 +88,6 @@ MODULE_DEVICE_TABLE(of, mtk_efuse_of_match);
 
 static struct platform_driver mtk_efuse_driver = {
 	.probe = mtk_efuse_probe,
-	.remove = mtk_efuse_remove,
 	.driver = {
 		.name = "mediatek,efuse",
 		.of_match_table = mtk_efuse_of_match,
-- 
2.14.3

[PATCH v3 11/22] nvmem: meson-mx-efuse: Convert to use devm_nvmem_register()

[Andrey Smirnov]

Drop all of the code related to .remove hook and make use of
devm_nvmem_register() instead.

Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Cc: Heiko Stuebner <heiko@sntech.de>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Carlo Caione <carlo@caione.org>
Cc: Kevin Hilman <khilman@baylibre.com>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: cphealy@gmail.com
Cc: linux-kernel@vger.kernel.org
Cc: linux-mediatek@lists.infradead.org
Cc: linux-rockchip@lists.infradead.org
Cc: linux-amlogic@lists.infradead.org
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
---
 drivers/nvmem/meson-mx-efuse.c | 12 +-----------
 1 file changed, 1 insertion(+), 11 deletions(-)

diff --git a/drivers/nvmem/meson-mx-efuse.c b/drivers/nvmem/meson-mx-efuse.c
index a346b4923550..f8e0b92e40ba 100644
--- a/drivers/nvmem/meson-mx-efuse.c
+++ b/drivers/nvmem/meson-mx-efuse.c
@@ -233,25 +233,15 @@ static int meson_mx_efuse_probe(struct platform_device *pdev)
 		return PTR_ERR(efuse->core_clk);
 	}
 
-	efuse->nvmem = nvmem_register(&efuse->config);
+	efuse->nvmem = devm_nvmem_register(&pdev->dev, &efuse->config);
 	if (IS_ERR(efuse->nvmem))
 		return PTR_ERR(efuse->nvmem);
 
-	platform_set_drvdata(pdev, efuse);
-
 	return 0;
 }
 
-static int meson_mx_efuse_remove(struct platform_device *pdev)
-{
-	struct meson_mx_efuse *efuse = platform_get_drvdata(pdev);
-
-	return nvmem_unregister(efuse->nvmem);
-}
-
 static struct platform_driver meson_mx_efuse_driver = {
 	.probe = meson_mx_efuse_probe,
-	.remove = meson_mx_efuse_remove,
 	.driver = {
 		.name = "meson-mx-efuse",
 		.of_match_table = meson_mx_efuse_match,
-- 
2.14.3

[PATCH v3 12/22] nvmem: meson-efuse: Convert to use devm_nvmem_register()

[Andrey Smirnov]

Drop all of the code related to .remove hook and make use of
devm_nvmem_register() instead.

Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Cc: Heiko Stuebner <heiko@sntech.de>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Carlo Caione <carlo@caione.org>
Cc: Kevin Hilman <khilman@baylibre.com>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: cphealy@gmail.com
Cc: linux-kernel@vger.kernel.org
Cc: linux-mediatek@lists.infradead.org
Cc: linux-rockchip@lists.infradead.org
Cc: linux-amlogic@lists.infradead.org
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
---
 drivers/nvmem/meson-efuse.c | 12 +-----------
 1 file changed, 1 insertion(+), 11 deletions(-)

diff --git a/drivers/nvmem/meson-efuse.c b/drivers/nvmem/meson-efuse.c
index a43c68f90937..66029fc85ba9 100644
--- a/drivers/nvmem/meson-efuse.c
+++ b/drivers/nvmem/meson-efuse.c
@@ -60,25 +60,15 @@ static int meson_efuse_probe(struct platform_device *pdev)
 	econfig.reg_read = meson_efuse_read;
 	econfig.size = size;
 
-	nvmem = nvmem_register(&econfig);
+	nvmem = devm_nvmem_register(&pdev->dev, &econfig);
 	if (IS_ERR(nvmem))
 		return PTR_ERR(nvmem);
 
-	platform_set_drvdata(pdev, nvmem);
-
 	return 0;
 }
 
-static int meson_efuse_remove(struct platform_device *pdev)
-{
-	struct nvmem_device *nvmem = platform_get_drvdata(pdev);
-
-	return nvmem_unregister(nvmem);
-}
-
 static struct platform_driver meson_efuse_driver = {
 	.probe = meson_efuse_probe,
-	.remove = meson_efuse_remove,
 	.driver = {
 		.name = "meson-efuse",
 		.of_match_table = meson_efuse_match,
-- 
2.14.3

[PATCH v3 13/22] nvmem: lpc18xx_otp: Convert to use devm_nvmem_register()

[Andrey Smirnov]

Drop all of the code related to .remove hook and make use of
devm_nvmem_register() instead.

Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Cc: Heiko Stuebner <heiko@sntech.de>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Carlo Caione <carlo@caione.org>
Cc: Kevin Hilman <khilman@baylibre.com>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: cphealy@gmail.com
Cc: linux-kernel@vger.kernel.org
Cc: linux-mediatek@lists.infradead.org
Cc: linux-rockchip@lists.infradead.org
Cc: linux-amlogic@lists.infradead.org
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
---
 drivers/nvmem/lpc18xx_otp.c | 12 +-----------
 1 file changed, 1 insertion(+), 11 deletions(-)

diff --git a/drivers/nvmem/lpc18xx_otp.c b/drivers/nvmem/lpc18xx_otp.c
index 95268db155e9..74777bfe2dcd 100644
--- a/drivers/nvmem/lpc18xx_otp.c
+++ b/drivers/nvmem/lpc18xx_otp.c
@@ -86,22 +86,13 @@ static int lpc18xx_otp_probe(struct platform_device *pdev)
 	lpc18xx_otp_nvmem_config.dev = &pdev->dev;
 	lpc18xx_otp_nvmem_config.priv = otp;
 
-	nvmem = nvmem_register(&lpc18xx_otp_nvmem_config);
+	nvmem = devm_nvmem_register(&pdev->dev, &lpc18xx_otp_nvmem_config);
 	if (IS_ERR(nvmem))
 		return PTR_ERR(nvmem);
 
-	platform_set_drvdata(pdev, nvmem);
-
 	return 0;
 }
 
-static int lpc18xx_otp_remove(struct platform_device *pdev)
-{
-	struct nvmem_device *nvmem = platform_get_drvdata(pdev);
-
-	return nvmem_unregister(nvmem);
-}
-
 static const struct of_device_id lpc18xx_otp_dt_ids[] = {
 	{ .compatible = "nxp,lpc1850-otp" },
 	{ },
@@ -110,7 +101,6 @@ MODULE_DEVICE_TABLE(of, lpc18xx_otp_dt_ids);
 
 static struct platform_driver lpc18xx_otp_driver = {
 	.probe	= lpc18xx_otp_probe,
-	.remove	= lpc18xx_otp_remove,
 	.driver = {
 		.name	= "lpc18xx_otp",
 		.of_match_table = lpc18xx_otp_dt_ids,
-- 
2.14.3

[PATCH v3 14/22] nvmem: imx-iim: Convert to use devm_nvmem_register()

[Andrey Smirnov]

Drop all of the code related to .remove hook and make use of
devm_nvmem_register() instead.

Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Cc: Heiko Stuebner <heiko@sntech.de>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Carlo Caione <carlo@caione.org>
Cc: Kevin Hilman <khilman@baylibre.com>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: cphealy@gmail.com
Cc: linux-kernel@vger.kernel.org
Cc: linux-mediatek@lists.infradead.org
Cc: linux-rockchip@lists.infradead.org
Cc: linux-amlogic@lists.infradead.org
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
---
 drivers/nvmem/imx-iim.c | 12 +-----------
 1 file changed, 1 insertion(+), 11 deletions(-)

diff --git a/drivers/nvmem/imx-iim.c b/drivers/nvmem/imx-iim.c
index 52cfe91d9762..635561a441bd 100644
--- a/drivers/nvmem/imx-iim.c
+++ b/drivers/nvmem/imx-iim.c
@@ -138,25 +138,15 @@ static int imx_iim_probe(struct platform_device *pdev)
 	cfg.size = drvdata->nregs;
 	cfg.priv = iim;
 
-	nvmem = nvmem_register(&cfg);
+	nvmem = devm_nvmem_register(dev, &cfg);
 	if (IS_ERR(nvmem))
 		return PTR_ERR(nvmem);
 
-	platform_set_drvdata(pdev, nvmem);
-
 	return 0;
 }
 
-static int imx_iim_remove(struct platform_device *pdev)
-{
-	struct nvmem_device *nvmem = platform_get_drvdata(pdev);
-
-	return nvmem_unregister(nvmem);
-}
-
 static struct platform_driver imx_iim_driver = {
 	.probe	= imx_iim_probe,
-	.remove	= imx_iim_remove,
 	.driver = {
 		.name	= "imx-iim",
 		.of_match_table = imx_iim_dt_ids,
-- 
2.14.3

[PATCH v3 15/22] nvmem: bcm-ocotp: Convert to use devm_nvmem_register()

[Andrey Smirnov]

Drop all of the code related to .remove hook and make use of
devm_nvmem_register() instead.

Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Cc: Heiko Stuebner <heiko@sntech.de>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Carlo Caione <carlo@caione.org>
Cc: Kevin Hilman <khilman@baylibre.com>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: cphealy@gmail.com
Cc: linux-kernel@vger.kernel.org
Cc: linux-mediatek@lists.infradead.org
Cc: linux-rockchip@lists.infradead.org
Cc: linux-amlogic@lists.infradead.org
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
---
 drivers/nvmem/bcm-ocotp.c | 12 +-----------
 1 file changed, 1 insertion(+), 11 deletions(-)

diff --git a/drivers/nvmem/bcm-ocotp.c b/drivers/nvmem/bcm-ocotp.c
index 5e9e324427f9..24c30fa475cc 100644
--- a/drivers/nvmem/bcm-ocotp.c
+++ b/drivers/nvmem/bcm-ocotp.c
@@ -302,27 +302,17 @@ static int bcm_otpc_probe(struct platform_device *pdev)
 
 	priv->config = &bcm_otpc_nvmem_config;
 
-	nvmem = nvmem_register(&bcm_otpc_nvmem_config);
+	nvmem = devm_nvmem_register(dev, &bcm_otpc_nvmem_config);
 	if (IS_ERR(nvmem)) {
 		dev_err(dev, "error registering nvmem config\n");
 		return PTR_ERR(nvmem);
 	}
 
-	platform_set_drvdata(pdev, nvmem);
-
 	return 0;
 }
 
-static int bcm_otpc_remove(struct platform_device *pdev)
-{
-	struct nvmem_device *nvmem = platform_get_drvdata(pdev);
-
-	return nvmem_unregister(nvmem);
-}
-
 static struct platform_driver bcm_otpc_driver = {
 	.probe	= bcm_otpc_probe,
-	.remove	= bcm_otpc_remove,
 	.driver = {
 		.name	= "brcm-otpc",
 		.of_match_table = bcm_otpc_dt_ids,
-- 
2.14.3

[PATCH v3 16/22] nvmem: meson-efuse: Do no gate COMPILE_TEST with MESON_SM

[Andrey Smirnov]

Being able to build this driver when COMPILE_TEST is selected is still
useful even when MESON_SM is not selected, since selecting this
driver as a module and doing "make modules" will result in successful
build and would detect trivial coding errors. For an example of type
of errors that could be prevented see [1] and [2]

[1] lkml.kernel.org/r/20171227225956.14442-12-andrew.smirnov@gmail.com
[2] https://marc.info/?l=linux-arm-kernel&m=151461599104358&w=2

Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Cc: Heiko Stuebner <heiko@sntech.de>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Carlo Caione <carlo@caione.org>
Cc: Kevin Hilman <khilman@baylibre.com>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: cphealy@gmail.com
Cc: linux-kernel@vger.kernel.org
Cc: linux-mediatek@lists.infradead.org
Cc: linux-rockchip@lists.infradead.org
Cc: linux-amlogic@lists.infradead.org
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
---
 drivers/nvmem/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/nvmem/Kconfig b/drivers/nvmem/Kconfig
index ff505af064ba..42e84e1b2a26 100644
--- a/drivers/nvmem/Kconfig
+++ b/drivers/nvmem/Kconfig
@@ -147,7 +147,7 @@ config NVMEM_VF610_OCOTP
 
 config MESON_EFUSE
 	tristate "Amlogic Meson GX eFuse Support"
-	depends on (ARCH_MESON || COMPILE_TEST) && MESON_SM
+	depends on (ARCH_MESON && MESON_SM) || COMPILE_TEST
 	help
 	  This is a driver to retrieve specific values from the eFuse found on
 	  the Amlogic Meson GX SoCs.
-- 
2.14.3

[PATCH v3 17/22] nvmem: snvs_lpgpr: Convert commas to semicolons

[Andrey Smirnov]

Looks like commas were accidentally used where semicolons were
supposed to be. Fix that.

Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Cc: Heiko Stuebner <heiko@sntech.de>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Carlo Caione <carlo@caione.org>
Cc: Kevin Hilman <khilman@baylibre.com>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: cphealy@gmail.com
Cc: linux-kernel@vger.kernel.org
Cc: linux-mediatek@lists.infradead.org
Cc: linux-rockchip@lists.infradead.org
Cc: linux-amlogic@lists.infradead.org
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
---
 drivers/nvmem/snvs_lpgpr.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/nvmem/snvs_lpgpr.c b/drivers/nvmem/snvs_lpgpr.c
index 6a2fdd09e74a..90aaf818563b 100644
--- a/drivers/nvmem/snvs_lpgpr.c
+++ b/drivers/nvmem/snvs_lpgpr.c
@@ -110,12 +110,12 @@ static int snvs_lpgpr_probe(struct platform_device *pdev)
 	cfg->priv = priv;
 	cfg->name = dev_name(dev);
 	cfg->dev = dev;
-	cfg->stride = 4,
-	cfg->word_size = 4,
-	cfg->size = 4,
-	cfg->owner = THIS_MODULE,
-	cfg->reg_read  = snvs_lpgpr_read,
-	cfg->reg_write = snvs_lpgpr_write,
+	cfg->stride = 4;
+	cfg->word_size = 4;
+	cfg->size = 4;
+	cfg->owner = THIS_MODULE;
+	cfg->reg_read  = snvs_lpgpr_read;
+	cfg->reg_write = snvs_lpgpr_write;
 
 	nvmem = devm_nvmem_register(dev, cfg);
 	if (IS_ERR(nvmem))
-- 
2.14.3

[PATCH v3 18/22] nvmem: rockchip-efuse: Make use of of_device_get_match_data()

[Andrey Smirnov]

Simplify code a bit by using of_device_get_match_data() instead of
of_match_device().

Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Cc: Heiko Stuebner <heiko@sntech.de>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Carlo Caione <carlo@caione.org>
Cc: Kevin Hilman <khilman@baylibre.com>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: cphealy@gmail.com
Cc: linux-kernel@vger.kernel.org
Cc: linux-mediatek@lists.infradead.org
Cc: linux-rockchip@lists.infradead.org
Cc: linux-amlogic@lists.infradead.org
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
---
 drivers/nvmem/rockchip-efuse.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/nvmem/rockchip-efuse.c b/drivers/nvmem/rockchip-efuse.c
index d6dc1330f895..979ba0a376a0 100644
--- a/drivers/nvmem/rockchip-efuse.c
+++ b/drivers/nvmem/rockchip-efuse.c
@@ -193,11 +193,11 @@ static int rockchip_efuse_probe(struct platform_device *pdev)
 	struct resource *res;
 	struct nvmem_device *nvmem;
 	struct rockchip_efuse_chip *efuse;
-	const struct of_device_id *match;
+	const void *data;
 	struct device *dev = &pdev->dev;
 
-	match = of_match_device(dev->driver->of_match_table, dev);
-	if (!match || !match->data) {
+	data = of_device_get_match_data(dev);
+	if (!data) {
 		dev_err(dev, "failed to get match data\n");
 		return -EINVAL;
 	}
@@ -218,7 +218,7 @@ static int rockchip_efuse_probe(struct platform_device *pdev)
 
 	efuse->dev = &pdev->dev;
 	econfig.size = resource_size(res);
-	econfig.reg_read = match->data;
+	econfig.reg_read = data;
 	econfig.priv = efuse;
 	econfig.dev = efuse->dev;
 	nvmem = devm_nvmem_register(dev, &econfig);
-- 
2.14.3

[PATCH v3 19/22] nvmem: vf610-ocotp: Do not use "&pdev->dev" explicitly

[Andrey Smirnov]

There already a "dev" variable for that. Use it.

Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Cc: Heiko Stuebner <heiko@sntech.de>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Carlo Caione <carlo@caione.org>
Cc: Kevin Hilman <khilman@baylibre.com>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: cphealy@gmail.com
Cc: linux-kernel@vger.kernel.org
Cc: linux-mediatek@lists.infradead.org
Cc: linux-rockchip@lists.infradead.org
Cc: linux-amlogic@lists.infradead.org
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
---
 drivers/nvmem/vf610-ocotp.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/nvmem/vf610-ocotp.c b/drivers/nvmem/vf610-ocotp.c
index 752a0983e7fb..6e6bf7987d9d 100644
--- a/drivers/nvmem/vf610-ocotp.c
+++ b/drivers/nvmem/vf610-ocotp.c
@@ -223,8 +223,7 @@ static int vf610_ocotp_probe(struct platform_device *pdev)
 	struct resource *res;
 	struct vf610_ocotp *ocotp_dev;
 
-	ocotp_dev = devm_kzalloc(&pdev->dev,
-			sizeof(struct vf610_ocotp), GFP_KERNEL);
+	ocotp_dev = devm_kzalloc(dev, sizeof(struct vf610_ocotp), GFP_KERNEL);
 	if (!ocotp_dev)
 		return -ENOMEM;
 
-- 
2.14.3

[PATCH v3 20/22] nvmem: rockchip-efuse: Do not use "&pdev->dev" explicitly

[Andrey Smirnov]

There's "dev" variable for this already. Use it.

Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Cc: Heiko Stuebner <heiko@sntech.de>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Carlo Caione <carlo@caione.org>
Cc: Kevin Hilman <khilman@baylibre.com>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: cphealy@gmail.com
Cc: linux-kernel@vger.kernel.org
Cc: linux-mediatek@lists.infradead.org
Cc: linux-rockchip@lists.infradead.org
Cc: linux-amlogic@lists.infradead.org
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
---
 drivers/nvmem/rockchip-efuse.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/nvmem/rockchip-efuse.c b/drivers/nvmem/rockchip-efuse.c
index 979ba0a376a0..3120329aea94 100644
--- a/drivers/nvmem/rockchip-efuse.c
+++ b/drivers/nvmem/rockchip-efuse.c
@@ -202,21 +202,21 @@ static int rockchip_efuse_probe(struct platform_device *pdev)
 		return -EINVAL;
 	}
 
-	efuse = devm_kzalloc(&pdev->dev, sizeof(struct rockchip_efuse_chip),
+	efuse = devm_kzalloc(dev, sizeof(struct rockchip_efuse_chip),
 			     GFP_KERNEL);
 	if (!efuse)
 		return -ENOMEM;
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	efuse->base = devm_ioremap_resource(&pdev->dev, res);
+	efuse->base = devm_ioremap_resource(dev, res);
 	if (IS_ERR(efuse->base))
 		return PTR_ERR(efuse->base);
 
-	efuse->clk = devm_clk_get(&pdev->dev, "pclk_efuse");
+	efuse->clk = devm_clk_get(dev, "pclk_efuse");
 	if (IS_ERR(efuse->clk))
 		return PTR_ERR(efuse->clk);
 
-	efuse->dev = &pdev->dev;
+	efuse->dev = dev;
 	econfig.size = resource_size(res);
 	econfig.reg_read = data;
 	econfig.priv = efuse;
-- 
2.14.3

[PATCH v3 21/22] nvmem: imx-iim: Do not use "&pdev->dev" explicitly

[Andrey Smirnov]

There's already "dev" variable for that. Use it.

Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Cc: Heiko Stuebner <heiko@sntech.de>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Carlo Caione <carlo@caione.org>
Cc: Kevin Hilman <khilman@baylibre.com>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: cphealy@gmail.com
Cc: linux-kernel@vger.kernel.org
Cc: linux-mediatek@lists.infradead.org
Cc: linux-rockchip@lists.infradead.org
Cc: linux-amlogic@lists.infradead.org
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
---
 drivers/nvmem/imx-iim.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/nvmem/imx-iim.c b/drivers/nvmem/imx-iim.c
index 635561a441bd..3022bd96bd7e 100644
--- a/drivers/nvmem/imx-iim.c
+++ b/drivers/nvmem/imx-iim.c
@@ -125,7 +125,7 @@ static int imx_iim_probe(struct platform_device *pdev)
 
 	drvdata = of_id->data;
 
-	iim->clk = devm_clk_get(&pdev->dev, NULL);
+	iim->clk = devm_clk_get(dev, NULL);
 	if (IS_ERR(iim->clk))
 		return PTR_ERR(iim->clk);
 
-- 
2.14.3

[PATCH v3 22/22] nvmem: bcm-ocotp: Do not use "&pdev->dev" explicitly

[Andrey Smirnov]

There's "dev" variable for this already. Use it.

Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Cc: Heiko Stuebner <heiko@sntech.de>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Carlo Caione <carlo@caione.org>
Cc: Kevin Hilman <khilman@baylibre.com>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: cphealy@gmail.com
Cc: linux-kernel@vger.kernel.org
Cc: linux-mediatek@lists.infradead.org
Cc: linux-rockchip@lists.infradead.org
Cc: linux-amlogic@lists.infradead.org
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
---
 drivers/nvmem/bcm-ocotp.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/nvmem/bcm-ocotp.c b/drivers/nvmem/bcm-ocotp.c
index 24c30fa475cc..4159b3f41d79 100644
--- a/drivers/nvmem/bcm-ocotp.c
+++ b/drivers/nvmem/bcm-ocotp.c
@@ -262,8 +262,7 @@ static int bcm_otpc_probe(struct platform_device *pdev)
 	else if (of_device_is_compatible(dev->of_node, "brcm,ocotp-v2"))
 		priv->map = &otp_map_v2;
 	else {
-		dev_err(&pdev->dev,
-			"%s otpc config map not defined\n", __func__);
+		dev_err(dev, "%s otpc config map not defined\n", __func__);
 		return -EINVAL;
 	}
 
-- 
2.14.3

Re: [PATCH v3 00/22] Verbatim device names and devm_nvmem_(un)register()

[Bartosz Golaszewski]

2018-01-03 21:00 GMT+01:00 Andrey Smirnov <andrew.smirnov@gmail.com>:
> Srinivas, all:
>
> This patchset contains various small changes that I recently made to
> NVMEM, more specifically:
>
>  - Patches 1 and 3 are two changes I am hoping are acceptable upstream
>
>  - Patches 4 to 15 are a follow up to patch 2
>
>  - Patches 16 to 22 are just trivial fixups and I am more than happy
>    to drop them if they seem to add more pointless churn rather then
>    value.
>
> Feedback is appreciated!
>
> Thanks,
> Andrey Smirnov
>
> Changes since [v2]:
>
>  - Added a patch with kerenl doc for struct nvmem_config as a
>    prerequsite for patch #2
>
>  - Documented behaviour of nvmem_register() when id is set to -1
>
>  - Added kernel doc for devm_nvmem_(un)register()
>
>
> Changes since [v1]:
>
>  - Fixed a build break detected by kbuild test robot
>
>  - Added a patch to unconditionally enable COMPILE_TEST for meson-efuse
>
>  - Dropped Joachim Eastwood from CC list due to bouncing e-mail
>
> [v2] lkml.kernel.org/r/20180101232310.30420-1-andrew.smirnov@gmail.com
> [v1] lkml.kernel.org/r/20171227225956.14442-1-andrew.smirnov@gmail.com
>
>

Hi Srinivas,

I don't see this series in next - is it going to miss this merge window?

Thanks,
Bartosz

Re: [PATCH v3 00/22] Verbatim device names and devm_nvmem_(un)register()

[Srinivas Kandagatla]

On 24/01/18 11:13, Bartosz Golaszewski wrote:
>>
> Hi Srinivas,
> 
> I don't see this series in next - is it going to miss this merge window?
> 

Thanks for your patience.

In general, I pick stuff which are sent before rc5-rc6 and send it to 
Greg KH for inclusion in char-misc tree.

These patches will be queued for next release cycle..

Thanks,
srini

> Thanks,
> Bartosz

Re: [PATCH v3 00/22] Verbatim device names and devm_nvmem_(un)register()

[Andrey Smirnov]

On Thu, Jan 25, 2018 at 1:17 AM, Srinivas Kandagatla
<srinivas.kandagatla@linaro.org> wrote:
>
>
> On 24/01/18 11:13, Bartosz Golaszewski wrote:
>>>
>>>
>> Hi Srinivas,
>>
>> I don't see this series in next - is it going to miss this merge window?
>>
>
> Thanks for your patience.
>
> In general, I pick stuff which are sent before rc5-rc6 and send it to Greg
> KH for inclusion in char-misc tree.
>
> These patches will be queued for next release cycle..
>

Srinivas:

Correct me if I am wrong, but doesn't seem like these patches made it
to char-misc tree yet. I was recently rebasing them on top of Linus'
master and ended up having to resolve a couple of merge conflicts, so
would you like me to re-spin v4 on top of 4.16-rc1 (or any other
version) and re-submit the series?

Thanks,
Andrey Smirnov

Re: [PATCH v3 00/22] Verbatim device names and devm_nvmem_(un)register()

[Srinivas Kandagatla]

Hi Andrey,
Thankyou for your patience.

On 26/02/18 03:45, Andrey Smirnov wrote:
> On Thu, Jan 25, 2018 at 1:17 AM, Srinivas Kandagatla
> <srinivas.kandagatla@linaro.org> wrote:
>>
>>
>> On 24/01/18 11:13, Bartosz Golaszewski wrote:
>>>>
>>>>
>>> Hi Srinivas,
>>>
>>> I don't see this series in next - is it going to miss this merge window?
>>>
>>
>> Thanks for your patience.
>>
>> In general, I pick stuff which are sent before rc5-rc6 and send it to Greg
>> KH for inclusion in char-misc tree.
>>
>> These patches will be queued for next release cycle..
>>
> 
> Srinivas:
> 
> Correct me if I am wrong, but doesn't seem like these patches made it
> to char-misc tree yet. I was recently rebasing them on top of Linus'

As this is 4.17 material, these will not go into char-misc tree until or 
after rc5.
> master and ended up having to resolve a couple of merge conflicts, so
> would you like me to re-spin v4 on top of 4.16-rc1 (or any other
> version) and re-submit the series?
Sure thanks, If you can respin the patches than that would reduce my 
time while sending it to Greg. I will send them to Greg next week.

thanks,
Srini
> 
> Thanks,
> Andrey Smirnov
> 

Re: [PATCH v3 01/22] nvmem: Document struct nvmem_config

[Sean Wang]

On Wed, 2018-01-03 at 12:00 -0800, Andrey Smirnov wrote:
> Add a simple description of struct nvmem_config and its fields.
> 
> Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
> Cc: Heiko Stuebner <heiko@sntech.de>
> Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
> Cc: Carlo Caione <carlo@caione.org>
> Cc: Kevin Hilman <khilman@baylibre.com>
> Cc: Matthias Brugger <matthias.bgg@gmail.com>
> Cc: cphealy@gmail.com
> Cc: linux-kernel@vger.kernel.org
> Cc: linux-mediatek@lists.infradead.org
> Cc: linux-rockchip@lists.infradead.org
> Cc: linux-amlogic@lists.infradead.org
> Cc: linux-arm-kernel@lists.infradead.org
> Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
> ---
>  include/linux/nvmem-provider.h | 22 ++++++++++++++++++++++
>  1 file changed, 22 insertions(+)
> 
> diff --git a/include/linux/nvmem-provider.h b/include/linux/nvmem-provider.h
> index 497706f5adca..27e599222ec1 100644
> --- a/include/linux/nvmem-provider.h
> +++ b/include/linux/nvmem-provider.h
> @@ -22,6 +22,28 @@ typedef int (*nvmem_reg_read_t)(void *priv, unsigned int offset,
>  typedef int (*nvmem_reg_write_t)(void *priv, unsigned int offset,
>  				 void *val, size_t bytes);
>  
> +/**
> + * struct nvmem_config - NVMEM device configuration
> + *
> + * @dev:	Parent device.
> + * @name:	Optional name.
> + * @id:		Optional device ID used in full name. Ignored if name is NULL.
> + * @owner:	Pointer to exporter module. Used for refcounting.
> + * @cells:	Optional array of pre-defined NVMEM cells.
> + * @ncells:	Number of elements in cells.
> + * @read_only:	Device is read-only.
> + * @root_only:	Device is accessibly to root only.
> + * @reg_read:	Callback to read data.
> + * @reg_write:	Callback to write data.
> + * @size:	Device size.
> + * @word_size:	Minimum read/write access granularity.
> + * @stride:	Minimum read/write access stide.

typo on stide ?

> + * @priv:	User context passed to read/write callbacks.
> + *
> + * Note: A default "nvmem<id>" name will be assigned to the device if
> + * no name is specified in its configuration. In such case "<id>" is
> + * generated with ida_simple_get() and provided id field is ignored.
> + */
>  struct nvmem_config {
>  	struct device		*dev;
>  	const char		*name;

Re: [PATCH v3 01/22] nvmem: Document struct nvmem_config

[Andrey Smirnov]

On Wed, Feb 28, 2018 at 10:34 AM, Sean Wang <sean.wang@mediatek.com> wrote:
> On Wed, 2018-01-03 at 12:00 -0800, Andrey Smirnov wrote:
>> Add a simple description of struct nvmem_config and its fields.
>>
>> Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
>> Cc: Heiko Stuebner <heiko@sntech.de>
>> Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
>> Cc: Carlo Caione <carlo@caione.org>
>> Cc: Kevin Hilman <khilman@baylibre.com>
>> Cc: Matthias Brugger <matthias.bgg@gmail.com>
>> Cc: cphealy@gmail.com
>> Cc: linux-kernel@vger.kernel.org
>> Cc: linux-mediatek@lists.infradead.org
>> Cc: linux-rockchip@lists.infradead.org
>> Cc: linux-amlogic@lists.infradead.org
>> Cc: linux-arm-kernel@lists.infradead.org
>> Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
>> ---
>>  include/linux/nvmem-provider.h | 22 ++++++++++++++++++++++
>>  1 file changed, 22 insertions(+)
>>
>> diff --git a/include/linux/nvmem-provider.h b/include/linux/nvmem-provider.h
>> index 497706f5adca..27e599222ec1 100644
>> --- a/include/linux/nvmem-provider.h
>> +++ b/include/linux/nvmem-provider.h
>> @@ -22,6 +22,28 @@ typedef int (*nvmem_reg_read_t)(void *priv, unsigned int offset,
>>  typedef int (*nvmem_reg_write_t)(void *priv, unsigned int offset,
>>                                void *val, size_t bytes);
>>
>> +/**
>> + * struct nvmem_config - NVMEM device configuration
>> + *
>> + * @dev:     Parent device.
>> + * @name:    Optional name.
>> + * @id:              Optional device ID used in full name. Ignored if name is NULL.
>> + * @owner:   Pointer to exporter module. Used for refcounting.
>> + * @cells:   Optional array of pre-defined NVMEM cells.
>> + * @ncells:  Number of elements in cells.
>> + * @read_only:       Device is read-only.
>> + * @root_only:       Device is accessibly to root only.
>> + * @reg_read:        Callback to read data.
>> + * @reg_write:       Callback to write data.
>> + * @size:    Device size.
>> + * @word_size:       Minimum read/write access granularity.
>> + * @stride:  Minimum read/write access stide.
>
> typo on stide ?

Definitely, will fix in next version.

Thanks,
Andrey Smirnov