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>

diff --git a/drivers/dma/stm32-mdma.c b/drivers/dma/stm32-mdma.c
index 0db59a7..d3be6bf 100644 (file)
--- 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));