[SDL] [PATCH] fix FB_VideoQuit for ia64

Jesse Barnes
Fri Jan 14 11:13:54 PST 2005

I noticed that on my ia64 machine when SDL_Quit was called, the machine would
hang in weird ways.  It turned out to be caused by a machine check in the
memset() call near the top of FB_VideoQuit.  Generally memset shouldn't be
used on I/O regions like the framebuffer or other I/O device memory (the
Linux kernel has special routines for dealing with I/O memory), so I changed
the #ifdef __powerpc__ to #if defined(__powerpc__) || defined(__ia64__) and
SDL_Quit now works properly.  The change should probably be made
unconditional though since doing one byte at a time is the only way to be
portable, afaik.

--HG--
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%401037

src/video/fbcon/SDL_fbvideo.c

@@ -1423,7 +1423,7 @@ static void FB_VideoQuit(_THIS)
 	if ( this->screen ) {
 		/* Clear screen and tell SDL not to free the pixels */
 		if ( this->screen->pixels && FB_InGraphicsMode(this) ) {
-#ifdef __powerpc__	/* SIGBUS when using memset() ?? */
+#if defined(__powerpc__) || defined(__ia64__)	/* SIGBUS when using memset() ?? */
 			Uint8 *rowp = (Uint8 *)this->screen->pixels;
 			int left = this->screen->pitch*this->screen->h;
 			while ( left-- ) { *rowp++ = 0; }