patch-2.3.23 linux/drivers/char/mem.c

• Lines: 10
• Date: Thu Oct 21 13:38:12 1999
• Orig file: v2.3.22/linux/drivers/char/mem.c
• Orig date: Sat Oct 9 11:47:50 1999

diff -u --recursive --new-file v2.3.22/linux/drivers/char/mem.c linux/drivers/char/mem.c
@@ -158,6 +158,9 @@
 		prot = (prot & _CACHEMASK040) | _PAGE_NOCACHE_S;
 #elif defined(__mips__)
 	prot = (prot & ~_CACHE_MASK) | _CACHE_UNCACHED;
+#elif defined(__arm__) && defined(CONFIG_CPU_32)
+	/* Turn off caching for all I/O areas */
+	prot &= ~(L_PTE_CACHEABLE | L_PTE_BUFFERABLE);
 #endif
 
 	return prot;