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| author | Antonino A. Daplas <adaplas@gmail.com> | 2005-08-15 21:29:11 +0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-08-15 09:59:39 -0700 |
| commit | 3edea4833a1efcd43e1dff082bc8001fdfe74b34 (patch) | |
| tree | 9c1fcbc1bf513123f9612153c40582d2ff464d07 /drivers/video/fbmem.c | |
| parent | 6bd49341f2806168c877e12cefca77b93437bac2 (diff) | |
| download | linux-3.10-3edea4833a1efcd43e1dff082bc8001fdfe74b34.tar.gz linux-3.10-3edea4833a1efcd43e1dff082bc8001fdfe74b34.tar.bz2 linux-3.10-3edea4833a1efcd43e1dff082bc8001fdfe74b34.zip | |
[PATCH] intelfb/fbdev: Save info->flags in a local variable
Reported by: Pavel Kysilka (Bugzilla Bug 5059)
The intelfb driver does not keep resolution set with fbset after
switching to anot console and back.
Steps to reproduce:
initial options: tty1,tty2 - 1024x768-60
1) tty1 - fbset after booting (1024x768-60)
2) tty1 - fbset 800x600-100
tty1: 800x600-100
3) swith to tty2, swith to tty1
tty1: 1024x768-60 (the same resolution as default from kernel booting)
This bug is caused by intelfb unintentionally destroying info->flags in
set_par(). Therefore the flag, FBINFO_MISC_USEREVENT used to notify
fbcon of a mode change was cleared causing the above problem. This bug
though is not intelfb specific, as other drivers may also be affected.
The fix is to save info->flags in a local variable before calling any
of the driver hooks. A more definitive fix (for post 2.6.13) is to
separate info->flags into one that is set by the driver and another that
is set by core fbdev/fbcon.
Signed-off-by: Antonino Daplas <adaplas@pol.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/video/fbmem.c')
| -rw-r--r-- | drivers/video/fbmem.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/video/fbmem.c b/drivers/video/fbmem.c index d2e19f6dd72..4ff853fbe0b 100644 --- a/drivers/video/fbmem.c +++ b/drivers/video/fbmem.c @@ -628,7 +628,7 @@ fb_pan_display(struct fb_info *info, struct fb_var_screeninfo *var) int fb_set_var(struct fb_info *info, struct fb_var_screeninfo *var) { - int err; + int err, flags = info->flags; if (var->activate & FB_ACTIVATE_INV_MODE) { struct fb_videomode mode1, mode2; @@ -682,7 +682,7 @@ fb_set_var(struct fb_info *info, struct fb_var_screeninfo *var) !list_empty(&info->modelist)) err = fb_add_videomode(&mode, &info->modelist); - if (!err && info->flags & FBINFO_MISC_USEREVENT) { + if (!err && (flags & FBINFO_MISC_USEREVENT)) { struct fb_event event; info->flags &= ~FBINFO_MISC_USEREVENT; |