MIPS: Loongson: Fix phys_mem_access_prot() check

The check used to determine if uncached accelerated should be used or not
is wrong. The parenthesis are misplaced and making the test fail.
Signed-off-by: Arnaud Patard <apatard@mandriva.com>
To: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/1161/Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/loongson/common/mem.c

@@ -75,7 +75,7 @@ pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn,
 	unsigned long end = offset + size;
 
 	if (__uncached_access(file, offset)) {
-		if (((uca_start && offset) >= uca_start) &&
+		if (uca_start && (offset >= uca_start) &&
 		    (end <= uca_end))
 			return __pgprot((pgprot_val(vma_prot) &
 					 ~_CACHE_MASK) |