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| author | Alexander Holler <holler@ahsoftware.de> | 2012-04-20 22:11:07 (GMT) |
|---|---|---|
| committer | Florian Tobias Schandinat <FlorianSchandinat@gmx.de> | 2012-07-24 20:52:37 (GMT) |
| commit | 2fe2d9f47cfe1a3e66e7d087368b3d7155b04c15 (patch) | |
| tree | 6fc0ace9a4dfc898ff56f3cc5d72d293755a9ff3 /drivers/video/smscufx.c | |
| parent | 659f675e4b79c3b0821f7aab377177007b4ba3fd (diff) | |
| download | linux-2fe2d9f47cfe1a3e66e7d087368b3d7155b04c15.tar.xz | |
video/smscufx: 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.
The origin of this bug seems to have been udlfb.
Signed-off-by: Alexander Holler <holler@ahsoftware.de>
Cc: stable@vger.kernel.org
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Diffstat (limited to 'drivers/video/smscufx.c')
| -rw-r--r-- | drivers/video/smscufx.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/video/smscufx.c b/drivers/video/smscufx.c index af3ef27..f39e069 100644 --- a/drivers/video/smscufx.c +++ b/drivers/video/smscufx.c @@ -904,7 +904,7 @@ static ssize_t ufx_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); |