[PATCH] sata_sil24: better error message from softreset

Improve softreset error message.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

diff --git a/drivers/scsi/sata_sil24.c b/drivers/scsi/sata_sil24.c
index 24eed37a063f513baf2d3631a4e4e9ccc35fe92c..d6cfd8eb29b9abd0d0792c11f752ad11dd287fa2 100644 (file)
--- a/drivers/scsi/sata_sil24.c
+++ b/drivers/scsi/sata_sil24.c
@@ -434,6 +434,7 @@ static int sil24_softreset(struct ata_port *ap, unsigned int *class)
        dma_addr_t paddr = pp->cmd_block_dma;
        unsigned long timeout = jiffies + ATA_TMOUT_BOOT;
        u32 irq_enable, irq_stat;
+       const char *reason;
 
        DPRINTK("ENTER\n");
 
@@ -473,8 +474,11 @@ static int sil24_softreset(struct ata_port *ap, unsigned int *class)
        writel(irq_enable, port + PORT_IRQ_ENABLE_SET);
 
        if (!(irq_stat & PORT_IRQ_COMPLETE)) {
-               printk(KERN_ERR "ata%u: softreset failed (timeout)\n", ap->id);
-               return -EIO;
+               if (irq_stat & PORT_IRQ_ERROR)
+                       reason = "SRST command error";
+               else
+                       reason = "timeout";
+               goto err;
        }
 
        sil24_update_tf(ap);
@@ -486,6 +490,10 @@ static int sil24_softreset(struct ata_port *ap, unsigned int *class)
  out:
        DPRINTK("EXIT, class=%u\n", *class);
        return 0;
+
+ err:
+       printk(KERN_ERR "ata%u: softreset failed (%s)\n", ap->id, reason);
+       return -EIO;
 }
 
 static int sil24_hardreset(struct ata_port *ap, unsigned int *class)