libata: fix EH locking
[linux-3.10.git] / drivers / scsi / sata_promise.c
index defcc1fb3f1684e4399d1d008d3d67deffca4f58..b8dc49fed7697751eef8e8cadbf4f9a5454dee66 100644 (file)
@@ -325,11 +325,15 @@ static void pdc_qc_prep(struct ata_queued_cmd *qc)
 
 static void pdc_eng_timeout(struct ata_port *ap)
 {
+       struct ata_host_set *host_set = ap->host_set;
        u8 drv_stat;
        struct ata_queued_cmd *qc;
+       unsigned long flags;
 
        DPRINTK("ENTER\n");
 
+       spin_lock_irqsave(&host_set->lock, flags);
+
        qc = ata_qc_from_tag(ap, ap->active_tag);
        if (!qc) {
                printk(KERN_ERR "ata%u: BUG: timeout without command\n",
@@ -363,6 +367,7 @@ static void pdc_eng_timeout(struct ata_port *ap)
        }
 
 out:
+       spin_unlock_irqrestore(&host_set->lock, flags);
        DPRINTK("EXIT\n");
 }