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[media] ov13858: Use do_div() for dividing a 64-bit number

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ov13858 contained a 64-bit division. Use do_div() for calculating it.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Tested-by: Chiranjeevi Rapolu <chiranjeevi.rapolu@intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Sakari Ailus 2017-09-21 11:24:53 -03:00 committed by Mauro Carvalho Chehab
parent 58020c9f14
commit 880d45f8fc
1 changed files with 10 additions and 4 deletions
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14
drivers/media/i2c/ov13858.c
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@ -951,7 +951,13 @@ static const char * const ov13858_test_pattern_menu[] = {
* pixel_rate = link_freq * data-rate * nr_of_lanes / bits_per_sample
* data rate => double data rate; number of lanes => 4; bits per pixel => 10
*/
#define LINK_FREQ_TO_PIXEL_RATE(f) (((f) * 2 * 4) / 10)
static u64 link_freq_to_pixel_rate(u64 f)
{
f *= 2 * 4;
do_div(f, 10);
return f;
}
/* Menu items for LINK_FREQ V4L2 control */
static const s64 link_freq_menu_items[OV13858_NUM_OF_LINK_FREQS] = {
@ -1404,7 +1410,7 @@ ov13858_set_pad_format(struct v4l2_subdev *sd,
ov13858->cur_mode = mode;
__v4l2_ctrl_s_ctrl(ov13858->link_freq, mode->link_freq_index);
link_freq = link_freq_menu_items[mode->link_freq_index];
pixel_rate = LINK_FREQ_TO_PIXEL_RATE(link_freq);
pixel_rate = link_freq_to_pixel_rate(link_freq);
__v4l2_ctrl_s_ctrl_int64(ov13858->pixel_rate, pixel_rate);
/* Update limits and set FPS to default */
@ -1642,8 +1648,8 @@ static int ov13858_init_controls(struct ov13858 *ov13858)
link_freq_menu_items);
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]);
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]);
/* By default, PIXEL_RATE is read only */
ov13858->pixel_rate = v4l2_ctrl_new_std(ctrl_hdlr, &ov13858_ctrl_ops,
V4L2_CID_PIXEL_RATE,