diff options
| author | Ben Dooks <ben@simtec.co.uk> | 2009-09-22 16:47:43 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-09-23 07:39:56 -0700 |
| commit | 360fa58828784f307c3977d5ff4c8e400f074a56 (patch) | |
| tree | 5909f2f112ca2d160cbf5f65ac6776e5f0fd84b5 /drivers/video | |
| parent | 9a4a83d2ed83da0c4b45289ca72f10205aa96589 (diff) | |
s3c2410fb: fix clockrate calculation
In the final part of the calculation for the tft display clockrate we
divide the output pf s3c2410fb_calc_pixclk() by 2 which leaves us with a
rounding error if the result is odd.
Change to using DIV_ROUND_UP() to ensure that we always choose a higher
divisor and thus a lower frequency.
Signed-off-by: Ben Dooks <ben@simtec.co.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/video')
| -rw-r--r-- | drivers/video/s3c2410fb.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/video/s3c2410fb.c b/drivers/video/s3c2410fb.c index 5ffca2adc6a..aac661225c7 100644 --- a/drivers/video/s3c2410fb.c +++ b/drivers/video/s3c2410fb.c @@ -369,7 +369,9 @@ static void s3c2410fb_activate_var(struct fb_info *info) void __iomem *regs = fbi->io; int type = fbi->regs.lcdcon1 & S3C2410_LCDCON1_TFT; struct fb_var_screeninfo *var = &info->var; - int clkdiv = s3c2410fb_calc_pixclk(fbi, var->pixclock) / 2; + int clkdiv; + + clkdiv = DIV_ROUND_UP(s3c2410fb_calc_pixclk(fbi, var->pixclock), 2); dprintk("%s: var->xres = %d\n", __func__, var->xres); dprintk("%s: var->yres = %d\n", __func__, var->yres); |