diff options
| author | Krzysztof Kozlowski <k.kozlowski@samsung.com> | 2014-09-29 14:42:18 +0200 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@intel.com> | 2014-10-15 13:30:09 +0530 |
| commit | 937cb2f2498dcbd8bcf6d79dcc24e5c8a3627067 (patch) | |
| tree | 6823ee249fe36afe43bab4c524fd632817aa64ec /drivers/dma | |
| parent | fe6cf28936cc948cd1045568975c5b0d196e76d4 (diff) | |
| download | linux-937cb2f2498dcbd8bcf6d79dcc24e5c8a3627067.tar.bz2 | |
dmaengine: pl330: Remove non-NULL check for pl330_submit_req parameters
The pl330_submit_req() checked supplied 'struct pl330_thread thrd' and
'struct dma_pl330_desc desc' parameters for non-NULL. However these
checks are useless because supplied arguments won't be NULL.
The pl330_submit_req() is called in only one place and:
1. 'desc' is already dereferenced in fill_queue() before calling
pl330_submit_req().
2. 'thrd' is always dereferenced after calling
fill_queue()->pl330_submit_req().
Removing the checks for non-NULL values fixes following warning:
drivers/dma/pl330.c:1376 pl330_submit_req() warn: variable dereferenced before check 'thrd' (see line 1367)
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'drivers/dma')
| -rw-r--r-- | drivers/dma/pl330.c | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c index d5149aacd2fe..57049f84d0c0 100644 --- a/drivers/dma/pl330.c +++ b/drivers/dma/pl330.c @@ -1372,10 +1372,6 @@ static int pl330_submit_req(struct pl330_thread *thrd, u32 ccr; int ret = 0; - /* No Req or Unacquired Channel or DMAC */ - if (!desc || !thrd || thrd->free) - return -EINVAL; - regs = thrd->dmac->base; if (pl330->state == DYING |