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dmaengine: stm32: remove redundant initialization of hwdesc

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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>
This commit is contained in:
Colin Ian King 2017-10-11 11:28:22 +01:00 committed by Vinod Koul
parent ea62e2ccbb
commit f2fd4d9f32
1 changed files with 2 additions and 2 deletions
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4
drivers/dma/stm32-mdma.c
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@ -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));