This is a note to let you know that I've just added the patch titled
gpio: sim: mark the GPIO chip as a one that can sleep
to the 6.4-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:
gpio-sim-mark-the-gpio-chip-as-a-one-that-can-sleep.patch
and it can be found in the queue-6.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 5a78d5db9c90c9dc84212f40a5f2687b7cafc8ec Mon Sep 17 00:00:00 2001
From: Bartosz Golaszewski <bartosz.golaszewski@xxxxxxxxxx>
Date: Tue, 1 Aug 2023 21:09:51 +0200
Subject: gpio: sim: mark the GPIO chip as a one that can sleep
From: Bartosz Golaszewski <bartosz.golaszewski@xxxxxxxxxx>
commit 5a78d5db9c90c9dc84212f40a5f2687b7cafc8ec upstream.
Simulated chips use a mutex for synchronization in driver callbacks so
they must not be called from interrupt context. Set the can_sleep field
of the GPIO chip to true to force users to only use threaded irqs.
Fixes: cb8c474e79be ("gpio: sim: new testing module")
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@xxxxxxxxxx>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Reviewed-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpio/gpio-sim.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/gpio/gpio-sim.c
+++ b/drivers/gpio/gpio-sim.c
@@ -429,6 +429,7 @@ static int gpio_sim_add_bank(struct fwno
gc->set_config = gpio_sim_set_config;
gc->to_irq = gpio_sim_to_irq;
gc->free = gpio_sim_free;
+ gc->can_sleep = true;
ret = devm_gpiochip_add_data(dev, gc, chip);
if (ret)
Patches currently in stable-queue which might be from bartosz.golaszewski@xxxxxxxxxx are
queue-6.4/gpio-sim-mark-the-gpio-chip-as-a-one-that-can-sleep.patch
queue-6.4/gpio-ws16c48-fix-off-by-one-error-in-ws16c48-resource-region-extent.patch
