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-rw-r--r--drivers/ata/sata_mv.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/ata/sata_mv.c b/drivers/ata/sata_mv.c
index be9ae4fc5cb..8245c82505c 100644
--- a/drivers/ata/sata_mv.c
+++ b/drivers/ata/sata_mv.c
@@ -1575,6 +1575,7 @@ static int mv_port_start(struct ata_port *ap)
struct device *dev = ap->host->dev;
struct mv_host_priv *hpriv = ap->host->private_data;
struct mv_port_priv *pp;
+ unsigned long flags;
int tag;
pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL);
@@ -1610,8 +1611,12 @@ static int mv_port_start(struct ata_port *ap)
pp->sg_tbl_dma[tag] = pp->sg_tbl_dma[0];
}
}
+
+ spin_lock_irqsave(ap->lock, flags);
mv_save_cached_regs(ap);
mv_edma_cfg(ap, 0, 0);
+ spin_unlock_irqrestore(ap->lock, flags);
+
return 0;
out_port_free_dma_mem:
@@ -1630,8 +1635,12 @@ out_port_free_dma_mem:
*/
static void mv_port_stop(struct ata_port *ap)
{
+ unsigned long flags;
+
+ spin_lock_irqsave(ap->lock, flags);
mv_stop_edma(ap);
mv_enable_port_irqs(ap, 0);
+ spin_unlock_irqrestore(ap->lock, flags);
mv_port_free_dma_mem(ap);
}