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Commit 7b7d0ca7 authored by Dave Jiang's avatar Dave Jiang Committed by Vinod Koul
Browse files

dmaengine: ioatdma: Fix variable array length 



Sparse reported:
drivers/dma/ioat/prep.c:637:27: sparse: Variable length array is used.

Assigning a static value for the array.

Signed-off-by: default avatarDave Jiang <dave.jiang@intel.com>
Signed-off-by: default avatarVinod Koul <vinod.koul@intel.com>
parent 5c65cb93

drivers/dma/ioat/prep.c

+10 −2
Original line number Diff line number Diff line
@@ -26,6 +26,8 @@ 
#include "hw.h"

#include "dma.h"



#define MAX_SCF	1024



/* provide a lookup table for setting the source address in the base or

 * extended descriptor of an xor or pq descriptor

 */
@@ -634,9 +636,12 @@ struct dma_async_tx_descriptor * 
ioat_prep_pqxor(struct dma_chan *chan, dma_addr_t dst, dma_addr_t *src,

		 unsigned int src_cnt, size_t len, unsigned long flags)

{

	unsigned char scf[src_cnt];

	unsigned char scf[MAX_SCF];

	dma_addr_t pq[2];



	if (src_cnt > MAX_SCF)

		return NULL;



	memset(scf, 0, src_cnt);

	pq[0] = dst;

	flags |= DMA_PREP_PQ_DISABLE_Q;
@@ -654,9 +659,12 @@ ioat_prep_pqxor_val(struct dma_chan *chan, dma_addr_t *src, 
		     unsigned int src_cnt, size_t len,

		     enum sum_check_flags *result, unsigned long flags)

{

	unsigned char scf[src_cnt];

	unsigned char scf[MAX_SCF];

	dma_addr_t pq[2];



	if (src_cnt > MAX_SCF)

		return NULL;



	/* the cleanup routine only sets bits on validate failure, it

	 * does not clear bits on validate success... so clear it here

	 */