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| author | Alexander Holler <holler@ahsoftware.de> | 2012-08-14 09:11:09 +0200 |
|---|---|---|
| committer | Florian Tobias Schandinat <FlorianSchandinat@gmx.de> | 2012-10-10 04:02:45 +0200 |
| commit | b8c4321f3d194469007f5f5f2b34ec278c264a04 (patch) | |
| tree | ce17b6ee47c11341bca03e1a8a44bd21db5cc710 /drivers/video/udlfb.c | |
| parent | video: exynos_mipi_dsi: Remove unnecessary NULL check (diff) | |
| download | linux-b8c4321f3d194469007f5f5f2b34ec278c264a04.tar.xz linux-b8c4321f3d194469007f5f5f2b34ec278c264a04.zip | |
video/udlfb: fix line counting in fb_write
Line 0 and 1 were both written to line 0 (on the display) and all subsequent
lines had an offset of -1. The result was that the last line on the display
was never overwritten by writes to /dev/fbN.
Cc: stable@vger.kernel.org
Signed-off-by: Alexander Holler <holler@ahsoftware.de>
Acked-by: Bernie Thompson <bernie@plugable.com>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Diffstat (limited to 'drivers/video/udlfb.c')
| -rw-r--r-- | drivers/video/udlfb.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/video/udlfb.c b/drivers/video/udlfb.c index 8af64148294b..38fcfff3c911 100644 --- a/drivers/video/udlfb.c +++ b/drivers/video/udlfb.c @@ -647,7 +647,7 @@ static ssize_t dlfb_ops_write(struct fb_info *info, const char __user *buf, result = fb_sys_write(info, buf, count, ppos); if (result > 0) { - int start = max((int)(offset / info->fix.line_length) - 1, 0); + int start = max((int)(offset / info->fix.line_length), 0); int lines = min((u32)((result / info->fix.line_length) + 1), (u32)info->var.yres); |