sata_nv: ck804 has borked hardreset too

While playing with nvraid, I found out that rmmoding and insmoding
often trigger hardreset failure on the first port (the second one was
always okay).  Seriously, how diverse can you get with hardreset
behaviors?  Anyways, make ck804 use noclassify variant too.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

diff --git a/drivers/ata/sata_nv.c b/drivers/ata/sata_nv.c
index c49ad0e61b6f2550a8b3f0b84122aa6f0bc0b40b..444af0415ca167b67f91adbf6ae24a5507c78987 100644 (file)
--- a/drivers/ata/sata_nv.c
+++ b/drivers/ata/sata_nv.c
@@ -436,11 +436,16 @@ static struct ata_port_operations nv_nf2_ops = {
        .hardreset              = nv_noclassify_hardreset,
 };
 
-/* CK804 finally gets hardreset right */
+/* For initial probing after boot and hot plugging, hardreset mostly
+ * works fine on CK804 but curiously, reprobing on the initial port by
+ * rescanning or rmmod/insmod fails to acquire the initial D2H Reg FIS
+ * in somewhat undeterministic way.  Use noclassify hardreset.
+ */
 static struct ata_port_operations nv_ck804_ops = {
        .inherits               = &nv_common_ops,
        .freeze                 = nv_ck804_freeze,
        .thaw                   = nv_ck804_thaw,
+       .hardreset              = nv_noclassify_hardreset,
        .host_stop              = nv_ck804_host_stop,
 };