Re: [bisected] Latest git not seeing HD with sata_nv

[Roland Dreier <rdreier@cisco.com>]

FWIW, the patch below also makes my box start working again...  I have
no idea what the right fix is, given that bug 3352 mostly seems to be
about nforce2 and nforce3, and my box has a more modern nvidia chipset:

    00:04.0 IDE interface [0101]: nVidia Corporation MCP55 IDE [10de:036e] (rev a1)

Anyway, it seems 305d2a1a broke the logic that nv_hardreset() relies on
when it doesn't let sata_sff_hardreset() set class.

diff --git a/drivers/ata/sata_nv.c b/drivers/ata/sata_nv.c
index 109b074..d0d85a3 100644
--- a/drivers/ata/sata_nv.c
+++ b/drivers/ata/sata_nv.c
@@ -1597,7 +1597,7 @@ static int nv_hardreset(struct ata_link *link, unsigned int *class,
 	 * some controllers.  Don't classify on hardreset.  For more
 	 * info, see http://bugzilla.kernel.org/show_bug.cgi?id=3352
 	 */
-	return sata_sff_hardreset(link, &dummy, deadline);
+	return sata_sff_hardreset(link, class, deadline);
 }
 
 static void nv_adma_error_handler(struct ata_port *ap)