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authorWilliam Katsak <william.katsak@alcatel-lucent.com>2011-06-23 13:16:29 +0000
committerPaul Mundt <lethal@linux-sh.org>2011-06-24 17:08:44 +0900
commit9377c51752970c305fae29ac634501fde44378cb (patch)
tree1d5bacbef3ea636fc644a664a683e264384f5472 /drivers/video
parent2bceec57fa7d660dffd4fbe423d84411cafb1acf (diff)
downloadlinux-9377c51752970c305fae29ac634501fde44378cb.tar.bz2
udlfb: Correct sub-optimal resolution selection.
The situation in which the problem occurred was with a Plugable UGA-2K-A connected to a Samsung EX2220X display. The driver indicates that 1920x1080 is a valid mode (the first mode available, in fact), but proceeds to set the framebuffer size to 1600x1200. The patch corrects what seems to be a logic error, regarding unsetting the FB_MISC_1ST_DETAIL flag, if the first (top/best) mode is invalid. The existing code unset the flag if ANY mode was invalid. Signed-off-by: William Katsak <william.katsak@alcatel-lucent.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'drivers/video')
-rw-r--r--drivers/video/udlfb.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/video/udlfb.c b/drivers/video/udlfb.c
index 52b0f3e8ccac..816a4fda04f5 100644
--- a/drivers/video/udlfb.c
+++ b/drivers/video/udlfb.c
@@ -1233,8 +1233,12 @@ static int dlfb_setup_modes(struct dlfb_data *dev,
if (dlfb_is_valid_mode(&info->monspecs.modedb[i], info))
fb_add_videomode(&info->monspecs.modedb[i],
&info->modelist);
- else /* if we've removed top/best mode */
- info->monspecs.misc &= ~FB_MISC_1ST_DETAIL;
+ else {
+ if (i == 0)
+ /* if we've removed top/best mode */
+ info->monspecs.misc
+ &= ~FB_MISC_1ST_DETAIL;
+ }
}
default_vmode = fb_find_best_display(&info->monspecs,