[patch] libata: fix last_ctl caching in ata_tf_read()

[Chuck Ebbert <cebbert@redhat.com>]

libata: fix last_ctl caching in ata_tf_read()

last_ctl was not cached properly. (Pointed out
by Tejun Heo.)

Signed-off-by: Chuck Ebbert <cebbert@redhat.com>

---
(Apply after Petr's patch to fix the sense data.)

 drivers/ata/libata-sff.c |    5 +++++
 1 file changed, 5 insertions(+)

--- linux-2.6.22.noarch.orig/drivers/ata/libata-sff.c
+++ linux-2.6.22.noarch/drivers/ata/libata-sff.c
@@ -196,7 +196,9 @@ void ata_tf_read(struct ata_port *ap, st
 {
 	struct ata_ioports *ioaddr = &ap->ioaddr;
 
+	ap->last_ctl = tf->ctl;
 	iowrite8(tf->ctl, ioaddr->ctl_addr);
+
 	tf->command = ata_check_status(ap);
 	tf->feature = ioread8(ioaddr->error_addr);
 	tf->nsect = ioread8(ioaddr->nsect_addr);
@@ -205,7 +208,9 @@ void ata_tf_read(struct ata_port *ap, st
 	tf->device = ioread8(ioaddr->device_addr);
 
 	if (tf->flags & ATA_TFLAG_LBA48) {
+		ap->last_ctl = tf_ctl | ATA_HOB;
 		iowrite8(tf->ctl | ATA_HOB, ioaddr->ctl_addr);
+
 		tf->hob_feature = ioread8(ioaddr->error_addr);
 		tf->hob_nsect = ioread8(ioaddr->nsect_addr);
 		tf->hob_lbal = ioread8(ioaddr->lbal_addr);