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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>
This commit is contained in:
William Katsak 2011-06-23 13:16:29 +00:00 committed by Paul Mundt
parent 2bceec57fa
commit 9377c51752
1 changed files with 6 additions and 2 deletions
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8
drivers/video/udlfb.c
View File

@ -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,