diff options
| author | Julia Lawall <julia@diku.dk> | 2010-02-06 11:43:41 +0300 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2010-02-10 22:07:28 +0300 |
| commit | 734c2992828c66cee3feb21ecd30a6ac44aecc51 (patch) | |
| tree | c732007f463393046dc83cc3d6b5953cb076aa32 /drivers | |
| parent | 8f98781e0f15207b6ab33bee1fae05428be0475b (diff) | |
| download | linux-734c2992828c66cee3feb21ecd30a6ac44aecc51.tar.xz | |
drivers/dma: Correct NULL test
cohd_fin has already been verified not to be NULL, so the argument to
BUG_ON cannot be true.
A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
@r@
expression *x;
expression e;
identifier l;
@@
if (x == NULL || ...) {
... when forall
return ...; }
... when != goto l;
when != x = e
when != &x
*x == NULL
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Acked-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/dma/coh901318.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/drivers/dma/coh901318.c b/drivers/dma/coh901318.c index b5f2ee0f8e2c..64a937262a40 100644 --- a/drivers/dma/coh901318.c +++ b/drivers/dma/coh901318.c @@ -613,8 +613,6 @@ static void dma_tasklet(unsigned long data) cohd_fin->pending_irqs--; cohc->completed = cohd_fin->desc.cookie; - BUG_ON(cohc->nbr_active_done && cohd_fin == NULL); - if (cohc->nbr_active_done == 0) return; |