dmaengine: fsl_raid: use !desc for NULL check

<= 0 is flagged by sparse as being used for integer, not pointer comparison. Fix the warning.

Signed-off-by Rosen Penev <[email protected]>

---

 drivers/dma/fsl_raid.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

drivers/dma/fsl_raid.c +3 -4

index 9cc289f7129e..8e7026682d0a 100644
@@ -346,7 +346,7 @@ static struct dma_async_tx_descriptor *fsl_re_prep_dma_genq(
 	}
 
 	desc = fsl_re_chan_alloc_desc(re_chan, flags);
-	if (desc <= 0)
+	if (!desc)
 		return NULL;
 
 	if (scf && (flags & DMA_PREP_CONTINUE)) {

@@ -470,7 +470,7 @@ static struct dma_async_tx_descriptor *fsl_re_prep_dma_pq(
 		src_cnt += 3;
 
 	desc = fsl_re_chan_alloc_desc(re_chan, flags);
-	if (desc <= 0)
+	if (!desc)
 		return NULL;
 
 	/* Filling GenQQ CDB */

@@ -554,7 +554,7 @@ static struct dma_async_tx_descriptor *fsl_re_prep_dma_memcpy(
 	}
 
 	desc = fsl_re_chan_alloc_desc(re_chan, flags);
-	if (desc <= 0)
+	if (!desc)
 		return NULL;
 
 	/* Filling move CDB */
--

2.55.0