Patch "gpiolib: rename static functions that are called with the lock taken" has been added to the 6.6-stable tree

[Sasha Levin <sashal@xxxxxxxxxx>]

This is a note to let you know that I've just added the patch titled

    gpiolib: rename static functions that are called with the lock taken

to the 6.6-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     gpiolib-rename-static-functions-that-are-called-with.patch
and it can be found in the queue-6.6 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 6a5051708c9468dc41ba8a7fe412adc9b6266052
Author: Bartosz Golaszewski <bartosz.golaszewski@xxxxxxxxxx>
Date:   Fri Dec 15 16:52:59 2023 +0100

    gpiolib: rename static functions that are called with the lock taken
    
    [ Upstream commit f95fd4ac155733b5735c84a2e56eee8321232095 ]
    
    Rename two functions that read or modify the global GPIO device list but
    don't take the lock themselves (and need to be called with it already
    acquired). Use the _unlocked() suffix which seems to be used quite
    consistently across the kernel despite there also existing the _locked()
    suffix for the same purpose.
    
    Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@xxxxxxxxxx>
    Reviewed-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
    Stable-dep-of: 48e1b4d369cf ("gpiolib: remove the GPIO device from the list when it's unregistered")
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index 71492d213ef4..d722b6301906 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -198,7 +198,7 @@ struct gpio_chip *gpiod_to_chip(const struct gpio_desc *desc)
 EXPORT_SYMBOL_GPL(gpiod_to_chip);
 
 /* dynamic allocation of GPIOs, e.g. on a hotplugged device */
-static int gpiochip_find_base(int ngpio)
+static int gpiochip_find_base_unlocked(int ngpio)
 {
 	struct gpio_device *gdev;
 	int base = GPIO_DYNAMIC_BASE;
@@ -271,7 +271,7 @@ EXPORT_SYMBOL_GPL(gpiod_get_direction);
  * Return -EBUSY if the new chip overlaps with some other chip's integer
  * space.
  */
-static int gpiodev_add_to_list(struct gpio_device *gdev)
+static int gpiodev_add_to_list_unlocked(struct gpio_device *gdev)
 {
 	struct gpio_device *prev, *next;
 
@@ -815,7 +815,7 @@ int gpiochip_add_data_with_key(struct gpio_chip *gc, void *data,
 	 */
 	base = gc->base;
 	if (base < 0) {
-		base = gpiochip_find_base(gc->ngpio);
+		base = gpiochip_find_base_unlocked(gc->ngpio);
 		if (base < 0) {
 			spin_unlock_irqrestore(&gpio_lock, flags);
 			ret = base;
@@ -835,7 +835,7 @@ int gpiochip_add_data_with_key(struct gpio_chip *gc, void *data,
 	}
 	gdev->base = base;
 
-	ret = gpiodev_add_to_list(gdev);
+	ret = gpiodev_add_to_list_unlocked(gdev);
 	if (ret) {
 		spin_unlock_irqrestore(&gpio_lock, flags);
 		chip_err(gc, "GPIO integer space overlap, cannot add chip\n");