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

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>

diff --git a/drivers/media/i2c/ov13858.c b/drivers/media/i2c/ov13858.c
index 2bd659976c30c43fc671647ee866e395dc523f7d..fdce2befed026ae961af02c13d019c92f39aef09 100644 (file)
--- a/drivers/media/i2c/ov13858.c
+++ b/drivers/media/i2c/ov13858.c
@@ -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,