[PATCH -next] dmaengine: sf-pdma: Remove set but not used variable "desc"

[Liu Shixin]

Fixes gcc '-Wunused-but-set-variable' warning:

drivers/dma/sf-pdma/sf-pdma.c: In function 'sf_pdma_donebh_tasklet':
drivers/dma/sf-pdma/sf-pdma.c:287:23: warning: unused variable 'desc' 
[-Wunused-variable]

After commit 8f6b6d060602 ("dmaengine: sf-pdma: Fix an error that calls 
callback twice"),
variable 'desc' is never used. Remove it to avoid build warning.

Signed-off-by: Liu Shixin <liushix...@huawei.com>
---
 drivers/dma/sf-pdma/sf-pdma.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/dma/sf-pdma/sf-pdma.c b/drivers/dma/sf-pdma/sf-pdma.c
index 754994087e5f..1e66c6990d81 100644
--- a/drivers/dma/sf-pdma/sf-pdma.c
+++ b/drivers/dma/sf-pdma/sf-pdma.c
@@ -284,7 +284,6 @@ static void sf_pdma_free_desc(struct virt_dma_desc *vdesc)
 static void sf_pdma_donebh_tasklet(unsigned long arg)
 {
        struct sf_pdma_chan *chan = (struct sf_pdma_chan *)arg;
-       struct sf_pdma_desc *desc = chan->desc;
        unsigned long flags;
 
        spin_lock_irqsave(&chan->lock, flags);
-- 
2.25.1