From 3633e8e1cdfe739ea336d9416580d2788774a663 Mon Sep 17 00:00:00 2001 From: David Woodhouse Date: Fri, 29 Mar 2013 11:54:55 +0000 Subject: [PATCH] libata: fix DMA to stack in reading devslp_timing parameters Commit 611aac981d1a413cc624e69283891ae63547a067 ("[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 Cc: stable@kernel.org Signed-off-by: Jeff Garzik --- drivers/ata/libata-core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 0075944a64dcd..63c743baf9202 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; -- 2.39.5