ieee1394: dv1394: fix possible deadlock in multithreaded clients

[safe/jmp/linux-2.6] / drivers / ieee1394 / csr1212.c

diff --git a/drivers/ieee1394/csr1212.c b/drivers/ieee1394/csr1212.c
index 9f95337..5e38a68 100644 (file)
--- a/drivers/ieee1394/csr1212.c
+++ b/drivers/ieee1394/csr1212.c
@@ -84,7 +84,7 @@ static const u8 csr1212_key_id_type_map[0x30] = {
 
 
 #define quads_to_bytes(_q) ((_q) * sizeof(u32))
-#define bytes_to_quads(_b) (((_b) + sizeof(u32) - 1) / sizeof(u32))
+#define bytes_to_quads(_b) DIV_ROUND_UP(_b, sizeof(u32))
 
 static void free_keyval(struct csr1212_keyval *kv)
 {