drivers/mmc: Move dereference after NULL test
If the NULL test on mrq is needed, then the derefernce should be after the
NULL test.
A simplified version of the semantic match that detects this problem is as
follows (http://coccinelle.lip6.fr/):
// <smpl>
@match exists@
expression x, E;
identifier fld;
@@
* x->fld
... when != \(x = E\|&x\)
* x == NULL
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Cc: <linux-mmc@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/mmc/host/s3cmci.c b/drivers/mmc/host/s3cmci.c
index ec15f1b..b4db401 100644
--- a/drivers/mmc/host/s3cmci.c
+++ b/drivers/mmc/host/s3cmci.c
@@ -820,7 +820,7 @@
static void finalize_request(struct s3cmci_host *host)
{
struct mmc_request *mrq = host->mrq;
- struct mmc_command *cmd = host->cmd_is_stop ? mrq->stop : mrq->cmd;
+ struct mmc_command *cmd;
int debug_as_failure = 0;
if (host->complete_what != COMPLETION_FINALIZE)
@@ -828,6 +828,7 @@
if (!mrq)
return;
+ cmd = host->cmd_is_stop ? mrq->stop : mrq->cmd;
if (cmd->data && (cmd->error == 0) &&
(cmd->data->error == 0)) {