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

2011-02-09 22:27:47 +01:00 · 2011-02-09 22:27:47 +01:00 · bc95471091
parent 5030cca70f
commit bc95471091
1 changed files with 29 additions and 0 deletions
--- a/svgalib/patches/110-fbdev-fix-mode-check.patch
+++ b/svgalib/patches/110-fbdev-fix-mode-check.patch
@ -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;