[SCSI] aic94xx: Lock DDB read/write accesses

[linux-2.6] / drivers / scsi / aic94xx / aic94xx_seq.c

diff --git a/drivers/scsi/aic94xx/aic94xx_seq.c b/drivers/scsi/aic94xx/aic94xx_seq.c
index 0d343cfd433350ab5f087626188f1a1e91c43ae3..2768fe4d66ba19f6fa26a42b39b207a6e945be2f 100644 (file)
--- a/drivers/scsi/aic94xx/aic94xx_seq.c
+++ b/drivers/scsi/aic94xx/aic94xx_seq.c
@@ -1395,7 +1395,9 @@ void asd_update_port_links(struct asd_ha_struct *asd_ha, struct asd_phy *phy)
        u8  phy_is_up;
        u8  mask;
        int i, err;
+       unsigned long flags;
 
+       spin_lock_irqsave(&asd_ha->hw_prof.ddb_lock, flags);
        for_each_phy(phy_mask, mask, i)
                asd_ddbsite_write_byte(asd_ha, 0,
                                       offsetof(struct asd_ddb_seq_shared,
@@ -1415,6 +1417,7 @@ void asd_update_port_links(struct asd_ha_struct *asd_ha, struct asd_phy *phy)
                        break;
                }
        }
+       spin_unlock_irqrestore(&asd_ha->hw_prof.ddb_lock, flags);
 
        if (err)
                asd_printk("couldn't update DDB 0:error:%d\n", err);