commit: 2fe2d9f47cfe1a3e66e7d087368b3d7155b04c15 From: Alexander Holler <[email protected]> Date: Sat, 21 Apr 2012 00:11:07 +0200 Subject: 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 <[email protected]> Cc: [email protected] Signed-off-by: Florian Tobias Schandinat <[email protected]> --- 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); -- 1.7.3.4 -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
