libata: kill dead code paths in reset path

Some code paths which had been made obsolete by recent reset
simplification were still around.  Kill them.

* ata_eh_reset() checked for ATA_DEV_UNKNOWN to determine
  classification failure.  This is no longer applicable.

* ata_do_reset() should convert ATA_DEV_UNKNOWN to ATA_DEV_NONE
  regardless of reset result (e.g. -EAGAIN).

* LLDs don't need to convert ATA_DEV_UNKNOWN to ATA_DEV_NONE.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

1 files changed, 0 insertions, 3 deletions

diff --git a/drivers/ata/sata_sil24.c b/drivers/ata/sata_sil24.c
index 068789361895..20757fa6115d 100644
--- a/drivers/ata/sata_sil24.c
+++ b/drivers/ata/sata_sil24.c
@@ -693,9 +693,6 @@ static int sil24_softreset(struct ata_link *link, unsigned int *class,
         sil24_read_tf(ap, 0, &tf);
         *class = ata_dev_classify(&tf);
 
-        if (*class == ATA_DEV_UNKNOWN)
-                *class = ATA_DEV_NONE;
-
  out:
         DPRINTK("EXIT, class=%u\n", *class);
         return 0;