From: Geert Uytterhoeven Date: Tue, 6 Jan 2009 22:42:37 +0000 (-0800) Subject: fbdev/logo: check compatibility of main and extra logos X-Git-Tag: MMI-PSA29.97-13-9~30155 X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=4fb6de2561d5c47f3539a7b412108164d79fbb96;p=GitHub%2FMotorolaMobilityLLC%2Fkernel-slsi.git 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 Cc: Krzysztof Helt Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/drivers/video/fbmem.c b/drivers/video/fbmem.c index 3c65b0d67617..756efeb91abc 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;