diff options
| author | David Woodhouse <dwmw2@infradead.org> | 2013-03-29 11:54:55 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-04-12 09:52:06 -0700 |
| commit | fa86f95a5aa0976bf4e326b390b5608c9b111943 (patch) | |
| tree | 1615bffdcfca6edd1c0b65ff99410c3561ea1243 /drivers | |
| parent | e584d9d2a25b79fcf07d66dbdccef6646623b9e7 (diff) | |
libata: fix DMA to stack in reading devslp_timing parameters
commit 8e725c7f8a60feaa88edacd4dee2c754d5ae7706 upstream.
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>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/ata/libata-core.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 6ac34b54f109..501c20907383 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; |