This is a note to let you know that I've just added the patch titled
media: i2c: mt9m114: use fsleep() in place of udelay()
to the 6.7-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:
media-i2c-mt9m114-use-fsleep-in-place-of-udelay.patch
and it can be found in the queue-6.7 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit bed804cafd03066cf36a4f7e7356bde73730e114
Author: Arnd Bergmann <arnd@xxxxxxxx>
Date: Wed Dec 13 12:23:07 2023 +0100
media: i2c: mt9m114: use fsleep() in place of udelay()
[ Upstream commit 02d4e62ae2452c83e4a3e279b8e4cb4dcbad4b31 ]
With clang-16, building without COMMON_CLK triggers a range check on
udelay() because of a constant division-by-zero calculation:
ld.lld: error: undefined symbol: __bad_udelay
>>> referenced by mt9m114.c
>>> drivers/media/i2c/mt9m114.o:(mt9m114_power_on) in archive vmlinux.a
In this configuration, the driver already fails to probe, before
this function gets called, so it's enough to suppress the assertion.
Do this by using fsleep(), which turns long delays into sleep() calls
in place of the link failure.
This is probably a good idea regardless to avoid overly long dynamic
udelay() calls on a slow clock.
Cc: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx>
Fixes: 24d756e914fc ("media: i2c: Add driver for onsemi MT9M114 camera sensor")
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
Reviewed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@xxxxxxxxxxxxxxxx>
Signed-off-by: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/media/i2c/mt9m114.c b/drivers/media/i2c/mt9m114.c
index ac19078ceda3..1a535c098ded 100644
--- a/drivers/media/i2c/mt9m114.c
+++ b/drivers/media/i2c/mt9m114.c
@@ -2112,7 +2112,7 @@ static int mt9m114_power_on(struct mt9m114 *sensor)
duration = DIV_ROUND_UP(2 * 50 * 1000000, freq);
gpiod_set_value(sensor->reset, 1);
- udelay(duration);
+ fsleep(duration);
gpiod_set_value(sensor->reset, 0);
} else {
/*
