media: rc: st_rc: Fix reset control resource leak

commit 1240abf4b7 upstream.

The driver calls reset_control_get_optional_exclusive() but never calls
reset_control_put() in error paths or in the remove function. This causes
a resource leak when probe fails after successfully acquiring the reset
control, or when the driver is unloaded.

Switch to devm_reset_control_get_optional_exclusive() to automatically
manage the reset control resource.

Fixes: a4b80242d0 ("media: st-rc: explicitly request exclusive reset control")
Cc: stable@vger.kernel.org
Signed-off-by: Haotian Zhang <vulab@iscas.ac.cn>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Haotian Zhang 2025-10-31 14:03:32 +08:00 • committed by Greg Kroah-Hartman
commit 76bbb99a03