AuxXxilium/linux_dsm_epyc7002
1
0
Fork 0
mirror of https://github.com/AuxXxilium/linux_dsm_epyc7002.git synced 2024-12-04 03:46:42 +07:00
Code Issues Actions Packages Projects Releases Wiki Activity

dmaengine: ioatdma: Fix variable array length

Browse Source 
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: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
This commit is contained in:
Dave Jiang 2015-08-25 12:58:11 -07:00 committed by Vinod Koul
parent 5c65cb93a3
commit 7b7d0ca777
1 changed files with 10 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
drivers/dma/ioat/prep.c
View File

@ -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
*/