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authorGeert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>2009-01-06 22:42:37 (GMT)
committerLinus Torvalds <torvalds@linux-foundation.org>2009-01-06 23:59:27 (GMT)
commit4fb6de2561d5c47f3539a7b412108164d79fbb96 (patch)
tree69404556536c60d0fec260f5d95ecfafe73e55bb /drivers/video/fbmem.c
parentc00b1b7d19d335f96aa03ef2e4e71b7fb4fdb056 (diff)
fbdev/logo: check compatibility of main and extra logos
The code to draw penguin logos always uses some properties of the main logo. This is incorrect if additional logos (CONFIG_FB_LOGO_EXTRA=y) have different types than the main logo, which causes corrupted logo images. http://bugzilla.kernel.org/show_bug.cgi?id=12181 Hence skip additional logos that are not compatible with the main logo. Technically, it's possible to draw multiple logos of different types on truecolor displays, but this would complicate the (already quite complicated) logo drawing code even more. This patch fixes a problem with Debian's linux-image-2.6.26-1-powerpc64 http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=508173 Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> Cc: Krzysztof Helt <krzysztof.h1@poczta.fm> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/video/fbmem.c')
-rw-r--r--drivers/video/fbmem.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/video/fbmem.c b/drivers/video/fbmem.c
index 3c65b0d..756efeb 100644
--- a/drivers/video/fbmem.c
+++ b/drivers/video/fbmem.c
@@ -510,6 +510,10 @@ static int fb_prepare_extra_logos(struct fb_info *info, unsigned int height,
fb_logo_ex_num = 0;
for (i = 0; i < fb_logo_ex_num; i++) {
+ if (fb_logo_ex[i].logo->type != fb_logo.logo->type) {
+ fb_logo_ex[i].logo = NULL;
+ continue;
+ }
height += fb_logo_ex[i].logo->height;
if (height > yres) {
height -= fb_logo_ex[i].logo->height;

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