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media: ov13858: Check for possible null pointer 

[ Upstream commit 35629182eb ]

Check for possible null pointer to avoid crash.

Signed-off-by: Chiranjeevi Rapolu <chiranjeevi.rapolu@intel.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Chiranjeevi Rapolu 2018-10-26 11:34:30 -04:00 committed by Greg Kroah-Hartman
parent 3ee72f30c1
commit 4a035f2643
1 changed files with 4 additions and 2 deletions
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6
drivers/media/i2c/ov13858.c
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@ -1612,7 +1612,8 @@ static int ov13858_init_controls(struct ov13858 *ov13858)
OV13858_NUM_OF_LINK_FREQS - 1,
0,
link_freq_menu_items);
ov13858->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY;
if (ov13858->link_freq)
ov13858->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY;
pixel_rate_max = link_freq_to_pixel_rate(link_freq_menu_items[0]);
pixel_rate_min = link_freq_to_pixel_rate(link_freq_menu_items[1]);
@ -1635,7 +1636,8 @@ static int ov13858_init_controls(struct ov13858 *ov13858)
ov13858->hblank = v4l2_ctrl_new_std(
ctrl_hdlr, &ov13858_ctrl_ops, V4L2_CID_HBLANK,
hblank, hblank, 1, hblank);
ov13858->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;
if (ov13858->hblank)
ov13858->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;
exposure_max = mode->vts_def - 8;
ov13858->exposure = v4l2_ctrl_new_std(