diff options
| author | Julia Lawall <julia@diku.dk> | 2009-12-15 05:01:20 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-12-15 19:53:34 +0300 |
| commit | 3423d80af67a94a641cc3297ec8c0869aa7f197c (patch) | |
| tree | 79c40fb875c0145598e05d3e7dfb93fd208a3f3b | |
| parent | 4ec64960653c91fa86373d06a079eb7a63deb21f (diff) | |
| download | linux-3423d80af67a94a641cc3297ec8c0869aa7f197c.tar.xz | |
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>
| -rw-r--r-- | drivers/mmc/host/s3cmci.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/mmc/host/s3cmci.c b/drivers/mmc/host/s3cmci.c index ec15f1bbf8b9..b4db401874e0 100644 --- a/drivers/mmc/host/s3cmci.c +++ b/drivers/mmc/host/s3cmci.c @@ -820,7 +820,7 @@ fail_request: 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 @@ static void finalize_request(struct s3cmci_host *host) if (!mrq) return; + cmd = host->cmd_is_stop ? mrq->stop : mrq->cmd; if (cmd->data && (cmd->error == 0) && (cmd->data->error == 0)) { |