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authorColin Ian King <colin.king@canonical.com>2017-10-11 13:28:22 +0300
committerVinod Koul <vinod.koul@intel.com>2017-10-12 17:04:41 +0300
commitf2fd4d9f323d8979fe77e673bb555199b531fa1a (patch)
tree04dfe5b5bb594c2cfcad8f91404fa6c6d4140857 /drivers/dma/stm32-mdma.c
parentea62e2ccbb18e8adc51a6591682e7efa7818478a (diff)
downloadlinux-f2fd4d9f323d8979fe77e673bb555199b531fa1a.tar.xz
dmaengine: stm32: remove redundant initialization of hwdesc
hwdesc is being initialized to desc->hwdesc but this is never read as hwdesc is overwritten in a for-loop. Remove the redundant initialization and move the declaration of hwdesc into the for-loop. Cleans up clang warning: Value stored to 'hwdesc' during its initialization is never read Signed-off-by: Colin Ian King <colin.king@canonical.com> Acked-by: Pierre-Yves MORDRET <pierre-yves.mordret@st.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'drivers/dma/stm32-mdma.c')
-rw-r--r--drivers/dma/stm32-mdma.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/dma/stm32-mdma.c b/drivers/dma/stm32-mdma.c
index 0db59a7e80e0..d3be6bffdf12 100644
--- a/drivers/dma/stm32-mdma.c
+++ b/drivers/dma/stm32-mdma.c
@@ -1252,13 +1252,13 @@ static size_t stm32_mdma_desc_residue(struct stm32_mdma_chan *chan,
u32 curr_hwdesc)
{
struct stm32_mdma_device *dmadev = stm32_mdma_get_dev(chan);
- struct stm32_mdma_hwdesc *hwdesc = desc->hwdesc;
u32 cbndtr, residue, modulo, burst_size;
int i;
residue = 0;
for (i = curr_hwdesc + 1; i < desc->count; i++) {
- hwdesc = &desc->hwdesc[i];
+ struct stm32_mdma_hwdesc *hwdesc = &desc->hwdesc[i];
+
residue += STM32_MDMA_CBNDTR_BNDT(hwdesc->cbndtr);
}
cbndtr = stm32_mdma_read(dmadev, STM32_MDMA_CBNDTR(chan->id));