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authorManinder Singh <maninder1.s@samsung.com>2015-05-25 21:10:05 +0200
committerVinod Koul <vinod.koul@intel.com>2015-05-25 19:06:08 +0200
commitf5636854f3fcee3dcb45a9d0122cf099e72615e5 (patch)
tree27edf590777a817ad33bf1f0ece708b694cc3df8 /drivers/dma/pl330.c
parentdmaengine: shdma: r8a73a4: Make dma_ts_shift[] static (diff)
downloadlinux-f5636854f3fcee3dcb45a9d0122cf099e72615e5.tar.xz
linux-f5636854f3fcee3dcb45a9d0122cf099e72615e5.zip
dmaengine: pl330: Initialize pl330 for pl330_prep_dma_memcpy after NULL check of pch
Currently pch pointer is already dereferenced before NULL check and thus we are getting below warning: warn: variable dereferenced before check 'pch' So initialize struct pl330_dmac *pl330 after NULL check of dma_pl330_chan *pch. Signed-off-by: Maninder Singh <maninder1.s@samsung.com> Reviewed-by: Vaneet Narang <v.narang@samsung.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'drivers/dma/pl330.c')
-rw-r--r--drivers/dma/pl330.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c
index a7d9d3029b14..7e2714478e45 100644
--- a/drivers/dma/pl330.c
+++ b/drivers/dma/pl330.c
@@ -2581,12 +2581,14 @@ pl330_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dst,
{
struct dma_pl330_desc *desc;
struct dma_pl330_chan *pch = to_pchan(chan);
- struct pl330_dmac *pl330 = pch->dmac;
+ struct pl330_dmac *pl330;
int burst;
if (unlikely(!pch || !len))
return NULL;
+ pl330 = pch->dmac;
+
desc = __pl330_prep_dma_memcpy(pch, dst, src, len);
if (!desc)
return NULL;