diff options
| author | Sakari Ailus | 2025-11-25 00:24:48 +0200 |
|---|---|---|
| committer | Sasha Levin | 2026-03-04 07:21:07 -0500 |
| commit | c9af1818387f5c6f543e2e02c40b3038eae86be8 (patch) | |
| tree | 92c3802ab3717d8619af7cd480b01c97faad1886 /drivers | |
| parent | 0c074e80921fd18984b75836730d76c768c84f65 (diff) | |
media: ccs: Avoid possible division by zero
[ Upstream commit 679f0b7b6a409750a25754c8833e268e5fdde742 ]
Calculating maximum M for scaler configuration involves dividing by
MIN_X_OUTPUT_SIZE limit register's value. Albeit the value is presumably
non-zero, the driver was missing the check it in fact was. Fix this.
Reported-by: Josh Poimboeuf <jpoimboe@kernel.org>
Closes: https://lore.kernel.org/all/ahukd6b3wonye3zgtptvwzvrxldcruazs2exfvll6etjhmcxyj@vq3eh6pd375b/
Fixes: ccfc97bdb5ae ("[media] smiapp: Add driver")
Cc: stable@vger.kernel.org # for 5.15 and later
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Tested-by: Nathan Chancellor <nathan@kernel.org> # build
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/media/i2c/ccs/ccs-core.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/media/i2c/ccs/ccs-core.c b/drivers/media/i2c/ccs/ccs-core.c index 5611db7e1b32..ae8309bd5e4d 100644 --- a/drivers/media/i2c/ccs/ccs-core.c +++ b/drivers/media/i2c/ccs/ccs-core.c @@ -2386,7 +2386,7 @@ static void ccs_set_compose_scaler(struct v4l2_subdev *subdev, * CCS_LIM(sensor, SCALER_N_MIN) / sel->r.height; max_m = crops[CCS_PAD_SINK]->width * CCS_LIM(sensor, SCALER_N_MIN) - / CCS_LIM(sensor, MIN_X_OUTPUT_SIZE); + / (CCS_LIM(sensor, MIN_X_OUTPUT_SIZE) ?: 1); a = clamp(a, CCS_LIM(sensor, SCALER_M_MIN), CCS_LIM(sensor, SCALER_M_MAX)); |