ata1: failed to reset engine (errno=-95)

[Bo Liu <bo-liu@xxxxxxxxxxx>]

Hi, ALL
 
      I patch these code for my 2.6.23 kernel.
 
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -1142,12 +1142,15 @@ static int ahci_reset_controller(struct ata_host *host)
                        readl(mmio + HOST_CTL); /* flush */
                }
 
-               /* reset must complete within 1 second, or
+               /*
+                * to perform host reset, OS should set HOST_RESET
+                * and poll until this bit is read to be "0".
+                * reset must complete within 1 second, or
                 * the hardware should be considered fried.
                 */
-               ssleep(1);
+               tmp = ata_wait_register(mmio + HOST_CTL, HOST_RESET,
+                                       HOST_RESET, 10, 1000);
 
-               tmp = readl(mmio + HOST_CTL);
                if (tmp & HOST_RESET) {
                        dev_printk(KERN_ERR, host->dev,
                                   "controller reset failed (0x%x)\n", tmp);

 
      Then everything is ok, except the below error:
      "ata1: failed to reset engine (errno=-95)."  
 
      Is someone know the reason? I think maybe i must patch more patches.But I don't know which.
         
      Thank you very much!

---

Best regards


Bo Liu
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