Kernel/linux-next
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git synced 2025-01-20 07:09:58 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

media: i2c: ar0521: Use cansleep version of gpiod_set_value()

Browse Source 
If we use GPIO reset from I2C port expander, we must use *_cansleep()
variant of GPIO functions.
This was not done in ar0521_power_on()/ar0521_power_off() functions.
Let's fix that.

------------[ cut here ]------------
WARNING: CPU: 0 PID: 11 at drivers/gpio/gpiolib.c:3496 gpiod_set_value+0x74/0x7c
Modules linked in:
CPU: 0 PID: 11 Comm: kworker/u16:0 Not tainted 6.10.0 #53
Hardware name: Diasom DS-RK3568-SOM-EVB (DT)
Workqueue: events_unbound deferred_probe_work_func
pstate: 80400009 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : gpiod_set_value+0x74/0x7c
lr : ar0521_power_on+0xcc/0x290
sp : ffffff8001d7ab70
x29: ffffff8001d7ab70 x28: ffffff80027dcc90 x27: ffffff8003c82000
x26: ffffff8003ca9250 x25: ffffffc080a39c60 x24: ffffff8003ca9088
x23: ffffff8002402720 x22: ffffff8003ca9080 x21: ffffff8003ca9088
x20: 0000000000000000 x19: ffffff8001eb2a00 x18: ffffff80efeeac80
x17: 756d2d6332692f30 x16: 0000000000000000 x15: 0000000000000000
x14: ffffff8001d91d40 x13: 0000000000000016 x12: ffffffc080e98930
x11: ffffff8001eb2880 x10: 0000000000000890 x9 : ffffff8001d7a9f0
x8 : ffffff8001d92570 x7 : ffffff80efeeac80 x6 : 000000003fc6e780
x5 : ffffff8001d91c80 x4 : 0000000000000002 x3 : 0000000000000000
x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000001
Call trace:
 gpiod_set_value+0x74/0x7c
 ar0521_power_on+0xcc/0x290
...

Signed-off-by: Alexander Shiyan <eagle.alexander923@gmail.com>
Fixes: 852b50aeed15 ("media: On Semi AR0521 sensor driver")
Cc: stable@vger.kernel.org
Acked-by: Krzysztof Hałasa <khalasa@piap.pl>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
This commit is contained in:
Alexander Shiyan 2024-08-29 08:48:49 +03:00 committed by Hans Verkuil
parent d920b37a27
commit bee1aed819
1 changed files with 3 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/media/i2c/ar0521.c
View File

@ -842,7 +842,8 @@ static void __ar0521_power_off(struct device *dev)
int i;
if (sensor->reset_gpio)
gpiod_set_value(sensor->reset_gpio, 1); /* assert RESET signal */
/* assert RESET signal */
gpiod_set_value_cansleep(sensor->reset_gpio, 1);
for (i = ARRAY_SIZE(ar0521_supply_names) - 1; i >= 0; i--) {
if (sensor->supplies[i])
@ -886,7 +887,7 @@ static int ar0521_power_on(struct device *dev)
if (sensor->reset_gpio)
/* deassert RESET signal */
gpiod_set_value(sensor->reset_gpio, 0);
gpiod_set_value_cansleep(sensor->reset_gpio, 0);
usleep_range(4500, 5000); /* min 45000 clocks */
for (cnt = 0; cnt < ARRAY_SIZE(initial_regs); cnt++) {