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authorLinus Torvalds <torvalds@linux-foundation.org>2010-11-13 04:17:09 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2010-11-13 04:17:09 +0300
commit80ef913f5e6a84551545016cea709f5e96d0cda6 (patch)
tree61796333896ac4878b47c825f8027c70bb3b8e19 /drivers
parent1c32ca9f63d2a103dd33eae72e5aff53a23fe650 (diff)
parentf2543790875b088e2a58aa12ee1ac20a75d6126d (diff)
downloadlinux-80ef913f5e6a84551545016cea709f5e96d0cda6.tar.xz
Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev
* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev: drivers/ata/pata_octeon_cf.c: delete double assignment pata_legacy: fix CONFIG_PATA_WINBOND_VLB_MODULE test libata: fix NULL sdev dereference race in atapi_qc_complete()
Diffstat (limited to 'drivers')
-rw-r--r--drivers/ata/libata-scsi.c5
-rw-r--r--drivers/ata/pata_legacy.c2
-rw-r--r--drivers/ata/pata_octeon_cf.c2
3 files changed, 5 insertions, 4 deletions
diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index d050e073e570..3f91c01c217f 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -2552,8 +2552,11 @@ static void atapi_qc_complete(struct ata_queued_cmd *qc)
*
* If door lock fails, always clear sdev->locked to
* avoid this infinite loop.
+ *
+ * This may happen before SCSI scan is complete. Make
+ * sure qc->dev->sdev isn't NULL before dereferencing.
*/
- if (qc->cdb[0] == ALLOW_MEDIUM_REMOVAL)
+ if (qc->cdb[0] == ALLOW_MEDIUM_REMOVAL && qc->dev->sdev)
qc->dev->sdev->locked = 0;
qc->scsicmd->result = SAM_STAT_CHECK_CONDITION;
diff --git a/drivers/ata/pata_legacy.c b/drivers/ata/pata_legacy.c
index eaf194138f21..6bd9425ba5ab 100644
--- a/drivers/ata/pata_legacy.c
+++ b/drivers/ata/pata_legacy.c
@@ -142,7 +142,7 @@ static int autospeed; /* Chip present which snoops speed changes */
static int pio_mask = ATA_PIO4; /* PIO range for autospeed devices */
static int iordy_mask = 0xFFFFFFFF; /* Use iordy if available */
-#ifdef PATA_WINBOND_VLB_MODULE
+#ifdef CONFIG_PATA_WINBOND_VLB_MODULE
static int winbond = 1; /* Set to probe Winbond controllers,
give I/O port if non standard */
#else
diff --git a/drivers/ata/pata_octeon_cf.c b/drivers/ata/pata_octeon_cf.c
index 74b829817891..fa1b95a9a7ff 100644
--- a/drivers/ata/pata_octeon_cf.c
+++ b/drivers/ata/pata_octeon_cf.c
@@ -653,8 +653,6 @@ static irqreturn_t octeon_cf_interrupt(int irq, void *dev_instance)
ap = host->ports[i];
ocd = ap->dev->platform_data;
-
- ocd = ap->dev->platform_data;
cf_port = ap->private_data;
dma_int.u64 =
cvmx_read_csr(CVMX_MIO_BOOT_DMA_INTX(ocd->dma_engine));