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svgalib: fix mode detection (used to detect non-existent 24-bit modes)

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This commit is contained in:
David Kühling 2011-02-09 22:27:47 +01:00
parent 5030cca70f
commit bc95471091
1 changed files with 29 additions and 0 deletions
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29
svgalib/patches/110-fbdev-fix-mode-check.patch Normal file
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@ -0,0 +1,29 @@
Index: svgalib-1.4.3/src/fbdev.c
===================================================================
--- svgalib-1.4.3.orig/src/fbdev.c 2011-02-09 21:45:00.000000000 +0100
+++ svgalib-1.4.3/src/fbdev.c 2011-02-09 21:46:42.000000000 +0100
@@ -273,11 +273,13 @@
{
struct fb_var_screeninfo info;
unsigned g;
+ int bpp;
if (fbdev_screeninfo(&info, mode))
return 0;
g = info.green.length;
+ bpp = info.bits_per_pixel;
info.activate = FB_ACTIVATE_TEST;
if (ioctl(fbdev_fd, FBIOPUT_VSCREENINFO, &info))
@@ -287,6 +289,10 @@
info.green.length != g)
return 0;
+ /* sometimes sets 32-bit modes when 24-bit is requested */
+ if (info.bits_per_pixel != bpp)
+ return 0;
+
/* We may need to add more checks here. */
return SVGADRV;