Hans de Goede 842a240666 media: i2c: ov8865: Fix lockdep error
[ Upstream commit 6e1c9bc9ae96e57bcd8807174f2c0f44f9ef7938 ]

ov8865_state_init() calls ov8865_state_mipi_configure() which uses
__v4l2_ctrl_s_ctrl[_int64](). This means that sensor->mutex (which
is also sensor->ctrls.handler.lock) must be locked before calling
ov8865_state_init().

Note ov8865_state_mipi_configure() is also used in other places where
the lock is already held so it cannot be changed itself.

This fixes the following lockdep kernel WARN:

[   13.233421] WARNING: CPU: 0 PID: 8 at drivers/media/v4l2-core/v4l2-ctrls-api.c:833 __v4l2_ctrl_s_ctrl+0x4d/0x60 [videodev]
...
[   13.234063] Call Trace:
[   13.234074]  ov8865_state_configure+0x98b/0xc00 [ov8865]
[   13.234095]  ov8865_probe+0x4b1/0x54c [ov8865]
[   13.234117]  i2c_device_probe+0x13c/0x2d0

Fixes: 11c0d8fdccc5 ("media: i2c: Add support for the OV8865 image sensor")
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-01-27 11:03:19 +01:00
..
2021-02-01 10:03:45 +01:00
2021-11-18 19:16:28 +01:00
2021-09-08 11:50:26 -07:00
2022-01-27 11:03:19 +01:00