pata_amd/pata_via: de-couple programming of PIO/MWDMA and UDMA timings

* Don't program UDMA timings when programming PIO or MWDMA modes.

  This has also a nice side-effect of fixing regression added by commit
  681c80b5d96076f447e8101ac4325c82d8dce508 ("libata: correct handling of
  SRST reset sequences") (->set_piomode method for PIO0 is called before
  ->cable_detect method which checks UDMA timings to get the cable type).

* Bump driver version.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Tested-by: "Thomas Lindroth" <thomas.lindroth@gmail.com>
Acked-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Tejun Heo <htejun@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

2 files changed, 5 insertions, 4 deletions

diff --git a/drivers/ata/pata_amd.c b/drivers/ata/pata_amd.c
index c5779ad4abca..3cc27b514654 100644
--- a/drivers/ata/pata_amd.c
+++ b/drivers/ata/pata_amd.c
@@ -25,7 +25,7 @@
 #include <linux/libata.h>
 
 #define DRV_NAME "pata_amd"
-#define DRV_VERSION "0.3.9"
+#define DRV_VERSION "0.3.10"
 
 /**
  *      timing_setup            -       shared timing computation and load
@@ -115,7 +115,8 @@ static void timing_setup(struct ata_port *ap, struct ata_device *adev, int offse
         }
 
         /* UDMA timing */
-        pci_write_config_byte(pdev, offset + 0x10 + (3 - dn), t);
+        if (at.udma)
+                pci_write_config_byte(pdev, offset + 0x10 + (3 - dn), t);
 }
 
 /**
diff --git a/drivers/ata/pata_via.c b/drivers/ata/pata_via.c
index a4175fbdd170..453d72bf2598 100644
--- a/drivers/ata/pata_via.c
+++ b/drivers/ata/pata_via.c
@@ -63,7 +63,7 @@
 #include <linux/dmi.h>
 
 #define DRV_NAME "pata_via"
-#define DRV_VERSION "0.3.2"
+#define DRV_VERSION "0.3.3"
 
 /*
  *      The following comes directly from Vojtech Pavlik's ide/pci/via82cxxx
@@ -296,7 +296,7 @@ static void via_do_set_mode(struct ata_port *ap, struct ata_device *adev, int mo
         }
 
         /* Set UDMA unless device is not UDMA capable */
-        if (udma_type) {
+        if (udma_type && t.udma) {
                 u8 cable80_status;
 
                 /* Get 80-wire cable detection bit */