libata-pmp-prep: add @new_class to ata_dev_revalidate()

Consider newly found class code while revalidating.  PMP resetting
always results in valid class code and issuing PMP commands to
ATA/ATAPI device isn't very attractive.  Add @new_class to
ata_dev_revalidate() and check class code for revalidation.

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

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c
index daa2f74f73c8..eb087bbc4771 100644
--- a/drivers/ata/libata-eh.c
+++ b/drivers/ata/libata-eh.c
@@ -2104,7 +2104,8 @@ static int ata_eh_revalidate_and_attach(struct ata_link *link,
                         }
 
                         ata_eh_about_to_do(link, dev, ATA_EH_REVALIDATE);
-                        rc = ata_dev_revalidate(dev, readid_flags);
+                        rc = ata_dev_revalidate(dev, ehc->classes[dev->devno],
+                                                readid_flags);
                         if (rc)
                                 goto err;