[PATCH 2.6.22-rc5] libata: fix infinite EH waiting bug

[Tejun Heo <htejun@gmail.com>]

When EH gives up after repeated exceptions, it doesn't't clear the
PENDING bit on exit which leaves PENDING bit set without EH actually
scheduled.  This makes ata_port_wait_eh() to wait forever makes rmmod
hang on such port.  Fix it by clearing the flag.

Signed-off-by: Tejun Heo <htejun@gmail.com>
---
 drivers/ata/libata-eh.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c
index d807098..fbdfefb 100644
--- a/drivers/ata/libata-eh.c
+++ b/drivers/ata/libata-eh.c
@@ -336,6 +336,7 @@ void ata_scsi_error(struct Scsi_Host *host)
 			}
 			ata_port_printk(ap, KERN_ERR, "EH pending after %d "
 					"tries, giving up\n", ATA_EH_MAX_REPEAT);
+			ap->pflags &= ~ATA_PFLAG_EH_PENDING;
 		}
 
 		/* this run is complete, make sure EH info is clear */