[2.6.22.2 review 23/84] Fix reported task file values in sense data

[Greg KH]

From: Petr Vandrovec <petr@xxxxxxxxxxxxxx>

ata_tf_read was setting HOB bit when lba48 command was submitted, but
was not clearing it before reading "normal" data.  As it is only place
which sets HOB bit in control register, and register reads should not
be affected by other bits, let's just clear it when we are done with
reading upper bytes so non-48bit commands do not have to touch ctl
at all.

pata_scc suffered from same problem...

Signed-off-by: Petr Vandrovec <petr@xxxxxxxxxxxxxx>
Signed-off-by: Jeff Garzik <jeff@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>

---
 drivers/ata/libata-sff.c |    2 ++
 drivers/ata/pata_scc.c   |    2 ++
 2 files changed, 4 insertions(+)

--- a/drivers/ata/libata-sff.c
+++ b/drivers/ata/libata-sff.c
@@ -211,6 +211,8 @@ void ata_tf_read(struct ata_port *ap, st
 		tf->hob_lbal = ioread8(ioaddr->lbal_addr);
 		tf->hob_lbam = ioread8(ioaddr->lbam_addr);
 		tf->hob_lbah = ioread8(ioaddr->lbah_addr);
+		iowrite8(tf->ctl, ioaddr->ctl_addr);
+		ap->last_ctl = tf->ctl;
 	}
 }
 
--- a/drivers/ata/pata_scc.c
+++ b/drivers/ata/pata_scc.c
@@ -352,6 +352,8 @@ static void scc_tf_read (struct ata_port
 		tf->hob_lbal = in_be32(ioaddr->lbal_addr);
 		tf->hob_lbam = in_be32(ioaddr->lbam_addr);
 		tf->hob_lbah = in_be32(ioaddr->lbah_addr);
+		out_be32(ioaddr->ctl_addr, tf->ctl);
+		ap->last_ctl = tf->ctl;
 	}
 }
 

-- 
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/