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 09:17:10 -0700 |
| commit | 52baa89e255101f58fd7952808e62119c301d287 (patch) | |
| tree | 4da0958d29db81d12ba5c5055c214cc6d37daaaa | |
| parent | 17313c04d71395a59d2797f9fa846c94aebcb73c (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 415e9b2f43d..6a7725a852f 100644 --- a/drivers/video/udlfb.c +++ b/drivers/video/udlfb.c @@ -613,7 +613,7 @@ 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); |