[PATCH] libata: PHY reset requires writing 0x4 to SControl

Hi,

Reading the Intel VSC and AHCI it seems like writing 0x302 is incorrect.
The only valid values are 4, 1 and 0.  Writing 4 disables the
PHY.

Signed-off-by: Martin Hicks <mort@bork.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c
index 16fc2dd8f2f7e3e7c17149c1764a153eea2c062a..73dd6c8deedec5d6f6e0f846bdeedce44f76ff69 100644 (file)
--- a/drivers/scsi/libata-core.c
+++ b/drivers/scsi/libata-core.c
@@ -2746,7 +2746,7 @@ int sata_std_hardreset(struct ata_port *ap, unsigned int *class)
                if ((rc = sata_scr_read(ap, SCR_CONTROL, &scontrol)))
                        return rc;
 
-               scontrol = (scontrol & 0x0f0) | 0x302;
+               scontrol = (scontrol & 0x0f0) | 0x304;
 
                if ((rc = sata_scr_write(ap, SCR_CONTROL, scontrol)))
                        return rc;