Linux-OMAP Archive on lore.kernel.org
 help / color / Atom feed
From: Thomas Gleixner <tglx@linutronix.de>
To: LKML <linux-kernel@vger.kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>,
	"Ahmed S. Darwish" <a.darwish@linutronix.de>,
	Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
	Alan Stern <stern@rowland.harvard.edu>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	linux-usb@vger.kernel.org, linux-omap@vger.kernel.org,
	Kukjin Kim <kgene@kernel.org>,
	Krzysztof Kozlowski <krzk@kernel.org>,
	linux-arm-kernel@lists.infradead.org,
	linux-samsung-soc@vger.kernel.org,
	Thomas Winischhofer <thomas@winischhofer.net>,
	Johan Hovold <johan@kernel.org>,
	Mathias Nyman <mathias.nyman@intel.com>,
	Valentina Manea <valentina.manea.m@gmail.com>,
	Shuah Khan <shuah@kernel.org>, Felipe Balbi <balbi@kernel.org>,
	Duncan Sands <duncan.sands@free.fr>
Subject: [patch 08/12] usb: hosts: Remove in_interrupt() from comments
Date: Wed, 14 Oct 2020 16:52:23 +0200
Message-ID: <20201014145727.957664398@linutronix.de> (raw)
In-Reply-To: <20201014145215.518912759@linutronix.de>

From: Ahmed S. Darwish <a.darwish@linutronix.de>

The usage of in_interrupt() in drivers is phased out for various reasons.

Various comments use !in_interrupt() to describe calling context for probe()
and remove() functions. That's wrong because the calling context has to be
preemptible task context, which is not what !in_interrupt() describes.

Cleanup the comments. While at it add the missing kernel doc argument
descriptors and make usb_hcd_msp_remove() static.

Signed-off-by: Ahmed S. Darwish <a.darwish@linutronix.de>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: linux-usb@vger.kernel.org
Cc: linux-omap@vger.kernel.org
Cc: Kukjin Kim <kgene@kernel.org>
Cc: Krzysztof Kozlowski <krzk@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-samsung-soc@vger.kernel.org

---
 drivers/usb/host/ehci-fsl.c     |    9 ++++-----
 drivers/usb/host/ehci-pmcmsp.c  |   15 +++++++++------
 drivers/usb/host/ohci-at91.c    |   11 ++++++++---
 drivers/usb/host/ohci-omap.c    |    7 ++++---
 drivers/usb/host/ohci-pxa27x.c  |   11 ++++++-----
 drivers/usb/host/ohci-s3c2410.c |   12 ++++++------
 6 files changed, 37 insertions(+), 28 deletions(-)

--- a/drivers/usb/host/ehci-fsl.c
+++ b/drivers/usb/host/ehci-fsl.c
@@ -39,10 +39,10 @@ static struct hc_driver __read_mostly fs
 /*
  * fsl_ehci_drv_probe - initialize FSL-based HCDs
  * @pdev: USB Host Controller being probed
- * Context: !in_interrupt()
  *
- * Allocates basic resources for this USB host controller.
+ * Context: task context, might sleep
  *
+ * Allocates basic resources for this USB host controller.
  */
 static int fsl_ehci_drv_probe(struct platform_device *pdev)
 {
@@ -684,12 +684,11 @@ static const struct ehci_driver_override
 /**
  * fsl_ehci_drv_remove - shutdown processing for FSL-based HCDs
  * @pdev: USB Host Controller being removed
- * Context: !in_interrupt()
  *
- * Reverses the effect of usb_hcd_fsl_probe().
+ * Context: task context, might sleep
  *
+ * Reverses the effect of usb_hcd_fsl_probe().
  */
-
 static int fsl_ehci_drv_remove(struct platform_device *pdev)
 {
 	struct fsl_usb2_platform_data *pdata = dev_get_platdata(&pdev->dev);
--- a/drivers/usb/host/ehci-pmcmsp.c
+++ b/drivers/usb/host/ehci-pmcmsp.c
@@ -147,12 +147,14 @@ static int usb_hcd_msp_map_regs(struct m
 
 /**
  * usb_hcd_msp_probe - initialize PMC MSP-based HCDs
- * Context: !in_interrupt()
+ * @driver:	Pointer to hc driver instance
+ * @dev:	USB controller to probe
+ *
+ * Context: task context, might sleep
  *
  * Allocates basic resources for this USB host controller, and
  * then invokes the start() method for the HCD associated with it
  * through the hotplug entry's driver_data.
- *
  */
 int usb_hcd_msp_probe(const struct hc_driver *driver,
 			  struct platform_device *dev)
@@ -223,8 +225,9 @@ int usb_hcd_msp_probe(const struct hc_dr
 
 /**
  * usb_hcd_msp_remove - shutdown processing for PMC MSP-based HCDs
- * @dev: USB Host Controller being removed
- * Context: !in_interrupt()
+ * @hcd: USB Host Controller being removed
+ *
+ * Context: task context, might sleep
  *
  * Reverses the effect of usb_hcd_msp_probe(), first invoking
  * the HCD's stop() method.  It is always called from a thread
@@ -233,7 +236,7 @@ int usb_hcd_msp_probe(const struct hc_dr
  * may be called without controller electrically present
  * may be called with controller, bus, and devices active
  */
-void usb_hcd_msp_remove(struct usb_hcd *hcd, struct platform_device *dev)
+static void usb_hcd_msp_remove(struct usb_hcd *hcd)
 {
 	usb_remove_hcd(hcd);
 	iounmap(hcd->regs);
@@ -306,7 +309,7 @@ static int ehci_hcd_msp_drv_remove(struc
 {
 	struct usb_hcd *hcd = platform_get_drvdata(pdev);
 
-	usb_hcd_msp_remove(hcd, pdev);
+	usb_hcd_msp_remove(hcd);
 
 	/* free TWI GPIO USB_HOST_DEV pin */
 	gpio_free(MSP_PIN_USB0_HOST_DEV);
--- a/drivers/usb/host/ohci-at91.c
+++ b/drivers/usb/host/ohci-at91.c
@@ -155,7 +155,10 @@ static struct regmap *at91_dt_syscon_sfr
 
 /*
  * usb_hcd_at91_probe - initialize AT91-based HCDs
- * Context: !in_interrupt()
+ * @driver:	Pointer to hc driver instance
+ * @pdev:	USB controller to probe
+ *
+ * Context: task context, might sleep
  *
  * Allocates basic resources for this USB host controller, and
  * then invokes the start() method for the HCD associated with it
@@ -246,12 +249,14 @@ static int usb_hcd_at91_probe(const stru
 
 /*
  * usb_hcd_at91_remove - shutdown processing for AT91-based HCDs
- * Context: !in_interrupt()
+ * @hcd:	USB controller to remove
+ * @pdev:	Platform device required for cleanup
+ *
+ * Context: task context, might sleep
  *
  * Reverses the effect of usb_hcd_at91_probe(), first invoking
  * the HCD's stop() method.  It is always called from a thread
  * context, "rmmod" or something similar.
- *
  */
 static void usb_hcd_at91_remove(struct usb_hcd *hcd,
 				struct platform_device *pdev)
--- a/drivers/usb/host/ohci-omap.c
+++ b/drivers/usb/host/ohci-omap.c
@@ -285,7 +285,9 @@ static int ohci_omap_reset(struct usb_hc
 
 /**
  * ohci_hcd_omap_probe - initialize OMAP-based HCDs
- * Context: !in_interrupt()
+ * @pdev:	USB controller to probe
+ *
+ * Context: task context, might sleep
  *
  * Allocates basic resources for this USB host controller, and
  * then invokes the start() method for the HCD associated with it
@@ -399,8 +401,7 @@ static int ohci_hcd_omap_probe(struct pl
 
 /**
  * ohci_hcd_omap_remove - shutdown processing for OMAP-based HCDs
- * @dev: USB Host Controller being removed
- * Context: !in_interrupt()
+ * @pdev: USB Host Controller being removed
  *
  * Reverses the effect of ohci_hcd_omap_probe(), first invoking
  * the HCD's stop() method.  It is always called from a thread
--- a/drivers/usb/host/ohci-pxa27x.c
+++ b/drivers/usb/host/ohci-pxa27x.c
@@ -410,12 +410,13 @@ static int ohci_pxa_of_init(struct platf
 
 /**
  * ohci_hcd_pxa27x_probe - initialize pxa27x-based HCDs
- * Context: !in_interrupt()
+ * @pdev:	USB Host controller to probe
+ *
+ * Context: task context, might sleep
  *
  * Allocates basic resources for this USB host controller, and
  * then invokes the start() method for the HCD associated with it
  * through the hotplug entry's driver_data.
- *
  */
 static int ohci_hcd_pxa27x_probe(struct platform_device *pdev)
 {
@@ -509,13 +510,13 @@ static int ohci_hcd_pxa27x_probe(struct
 
 /**
  * ohci_hcd_pxa27x_remove - shutdown processing for pxa27x-based HCDs
- * @dev: USB Host Controller being removed
- * Context: !in_interrupt()
+ * @pdev: USB Host Controller being removed
+ *
+ * Context: task context, might sleep
  *
  * Reverses the effect of ohci_hcd_pxa27x_probe(), first invoking
  * the HCD's stop() method.  It is always called from a thread
  * context, normally "rmmod", "apmd", or something similar.
- *
  */
 static int ohci_hcd_pxa27x_remove(struct platform_device *pdev)
 {
--- a/drivers/usb/host/ohci-s3c2410.c
+++ b/drivers/usb/host/ohci-s3c2410.c
@@ -324,14 +324,13 @@ static void s3c2410_hcd_oc(struct s3c241
 /*
  * ohci_hcd_s3c2410_remove - shutdown processing for HCD
  * @dev: USB Host Controller being removed
- * Context: !in_interrupt()
+ *
+ * Context: task context, might sleep
  *
  * Reverses the effect of ohci_hcd_3c2410_probe(), first invoking
  * the HCD's stop() method.  It is always called from a thread
  * context, normally "rmmod", "apmd", or something similar.
- *
-*/
-
+ */
 static int
 ohci_hcd_s3c2410_remove(struct platform_device *dev)
 {
@@ -345,12 +344,13 @@ ohci_hcd_s3c2410_remove(struct platform_
 
 /*
  * ohci_hcd_s3c2410_probe - initialize S3C2410-based HCDs
- * Context: !in_interrupt()
+ * @dev: USB Host Controller to be probed
+ *
+ * Context: task context, might sleep
  *
  * Allocates basic resources for this USB host controller, and
  * then invokes the start() method for the HCD associated with it
  * through the hotplug entry's driver_data.
- *
  */
 static int ohci_hcd_s3c2410_probe(struct platform_device *dev)
 {


  parent reply index

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-14 14:52 [patch 00/12] UBS: Cleanup in_interupt/in_irq/in_atomic() usage Thomas Gleixner
2020-10-14 14:52 ` [patch 01/12] USB: sisusbvga: Make console support depend on BROKEN Thomas Gleixner
2020-10-14 14:52 ` [patch 02/12] USB: serial: keyspan_pda: Replace in_interrupt() usage Thomas Gleixner
2020-10-14 14:52 ` [patch 03/12] USB: serial: keyspan_pda: Consolidate room query Thomas Gleixner
2020-10-14 16:14   ` Alan Stern
2020-10-14 16:17     ` Thomas Gleixner
2020-10-14 16:27     ` Sebastian Andrzej Siewior
2020-10-14 16:34       ` Alan Stern
2020-10-14 16:44         ` Sebastian Andrzej Siewior
2020-10-14 14:52 ` [patch 04/12] USB: serial: digi_acceleport: Remove in_interrupt() usage Thomas Gleixner
2020-10-14 14:52 ` [patch 05/12] usb: xhci: Remove in_interrupt() checks Thomas Gleixner
2020-10-23 13:38   ` Mathias Nyman
2020-10-14 14:52 ` [patch 06/12] usb: host: isp1362: Replace in_interrupt() usage Thomas Gleixner
2020-10-14 14:52 ` [patch 07/12] usbip: Remove in_interrupt() check Thomas Gleixner
2020-10-14 15:45   ` Shuah Khan
2020-10-14 14:52 ` Thomas Gleixner [this message]
2020-10-14 15:24   ` [patch 08/12] usb: hosts: Remove in_interrupt() from comments Krzysztof Kozlowski
2020-10-14 16:20   ` Alan Stern
2020-10-14 14:52 ` [patch 09/12] usb: gadget: pxa27x_udc: Replace in_interrupt() usage in comments Thomas Gleixner
2020-10-14 14:52 ` [patch 10/12] usb: gadget: udc: Remove in_interrupt()/in_irq() from comments Thomas Gleixner
2020-10-14 16:22   ` Alan Stern
2020-10-14 14:52 ` [patch 11/12] usb: core: Replace in_interrupt() in comments Thomas Gleixner
2020-10-14 16:27   ` Alan Stern
2020-10-14 16:41     ` Sebastian Andrzej Siewior
2020-10-14 18:13       ` Alan Stern
2020-10-14 14:52 ` [patch 12/12] usb: atm: Replace in_interrupt() usage in comment Thomas Gleixner
2020-10-23  8:01 ` [patch 00/12] UBS: Cleanup in_interupt/in_irq/in_atomic() usage Pavel Machek

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20201014145727.957664398@linutronix.de \
    --to=tglx@linutronix.de \
    --cc=a.darwish@linutronix.de \
    --cc=balbi@kernel.org \
    --cc=bigeasy@linutronix.de \
    --cc=duncan.sands@free.fr \
    --cc=gregkh@linuxfoundation.org \
    --cc=johan@kernel.org \
    --cc=kgene@kernel.org \
    --cc=krzk@kernel.org \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-omap@vger.kernel.org \
    --cc=linux-samsung-soc@vger.kernel.org \
    --cc=linux-usb@vger.kernel.org \
    --cc=mathias.nyman@intel.com \
    --cc=peterz@infradead.org \
    --cc=shuah@kernel.org \
    --cc=stern@rowland.harvard.edu \
    --cc=thomas@winischhofer.net \
    --cc=valentina.manea.m@gmail.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

Linux-OMAP Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-omap/0 linux-omap/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-omap linux-omap/ https://lore.kernel.org/linux-omap \
		linux-omap@vger.kernel.org
	public-inbox-index linux-omap

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.linux-omap


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git