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authorDavid Woodhouse <dwmw2@infradead.org>2013-03-29 11:54:55 +0000
committerJeff Garzik <jgarzik@redhat.com>2013-04-03 19:45:57 -0400
commit8e725c7f8a60feaa88edacd4dee2c754d5ae7706 (patch)
treec1cec8594972926936365b124a10a5ce05233265 /drivers/ata/libata-core.c
parentb55f84e2d527182e7c611d466cd0bb6ddce201de (diff)
downloadlinux-linaro-stable-8e725c7f8a60feaa88edacd4dee2c754d5ae7706.tar.gz
libata: fix DMA to stack in reading devslp_timing parameters
Commit 803739d25c2343da6d2f95eebdcbc08bf67097d4 ("[libata] replace sata_settings with devslp_timing"), which was also Cc: stable, used a stack buffer to receive data from ata_read_log_page(), which triggers the following warning: ahci 0000:00:1f.2: DMA-API: device driver maps memory fromstack [addr=ffff880140469948] Fix this by using ap->sector_buf instead of a stack buffer. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Cc: stable@kernel.org Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'drivers/ata/libata-core.c')
-rw-r--r--drivers/ata/libata-core.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 0075944a64dc..63c743baf920 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -2329,7 +2329,7 @@ int ata_dev_configure(struct ata_device *dev)
* from SATA Settings page of Identify Device Data Log.
*/
if (ata_id_has_devslp(dev->id)) {
- u8 sata_setting[ATA_SECT_SIZE];
+ u8 *sata_setting = ap->sector_buf;
int i, j;
dev->flags |= ATA_DFLAG_DEVSLP;