diff options
| author | Alexander Holler <holler@ahsoftware.de> | 2012-08-14 09:11:09 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-10-21 09:27:59 -0700 |
| commit | a065f95a851f18c2b4531808c0a9503f14aa9624 (patch) | |
| tree | 7da698e15f524aa9252b8d923e59b2296bfacb24 | |
| parent | 08de372d6c39473773fc303b9253a2be938badbd (diff) | |
video/udlfb: fix line counting in fb_write
commit b8c4321f3d194469007f5f5f2b34ec278c264a04 upstream.
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.
Signed-off-by: Alexander Holler <holler@ahsoftware.de>
Acked-by: Bernie Thompson <bernie@plugable.com>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -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 a159b63e18b..85d81103c1f 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); |