[PATCH] sata_mv: chip initialization fixes

The interface control register of the 60xx (and later) Marvell chip
requires certain bits to always be set when writing to it.  These bits
incorrectly read-back as zeros, so the pattern must be ORed in
with each write of the register.  Also, bit 12 should NOT be set
(note that Marvell's own driver also had bit-12 wrong here).

While we're at it, we also now do pci_set_master() in the init code.

Signed-off-by: Mark Lord <liml@rtr.ca>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 5 insertions, 2 deletions

diff --git a/drivers/scsi/sata_mv.c b/drivers/scsi/sata_mv.c
index 3ed2f333d5a9..bb2409e761d0 100644
--- a/drivers/scsi/sata_mv.c
+++ b/drivers/scsi/sata_mv.c
@@ -1885,7 +1885,8 @@ static void mv_channel_reset(struct mv_host_priv *hpriv, void __iomem *mmio,
 
         if (IS_60XX(hpriv)) {
                 u32 ifctl = readl(port_mmio + SATA_INTERFACE_CTL);
-                ifctl |= (1 << 12) | (1 << 7);
+                ifctl |= (1 << 7);              /* enable gen2i speed */
+                ifctl = (ifctl & 0xfff) | 0x9b1000; /* from chip spec */
                 writelfl(ifctl, port_mmio + SATA_INTERFACE_CTL);
         }
 
@@ -2250,7 +2251,8 @@ static int mv_init_host(struct pci_dev *pdev, struct ata_probe_ent *probe_ent,
                         void __iomem *port_mmio = mv_port_base(mmio, port);
 
                         u32 ifctl = readl(port_mmio + SATA_INTERFACE_CTL);
-                        ifctl |= (1 << 12);
+                        ifctl |= (1 << 7);              /* enable gen2i speed */
+                        ifctl = (ifctl & 0xfff) | 0x9b1000; /* from chip spec */
                         writelfl(ifctl, port_mmio + SATA_INTERFACE_CTL);
                 }
 
@@ -2351,6 +2353,7 @@ static int mv_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
         if (rc) {
                 return rc;
         }
+        pci_set_master(pdev);
 
         rc = pci_request_regions(pdev, DRV_NAME);
         if (rc) {