[libata] sata_mv: Fix 50xx irq mask

IRQ mask bits assumed a 60xx or newer generation chip, which is very
wrong for the 50xx series.  Luckily both generations shared the per-port
interrupt mask bits, leaving only the "misc chip features" bits to be
completely mismatched.

Fix 50xx by ensuring we only program bits that exist.

Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 10 insertions, 1 deletions

diff --git a/drivers/ata/sata_mv.c b/drivers/ata/sata_mv.c
index cc59aca12d42..144b2274706c 100644
--- a/drivers/ata/sata_mv.c
+++ b/drivers/ata/sata_mv.c
@@ -137,14 +137,19 @@ enum {
         PCI_ERR                 = (1 << 18),
         TRAN_LO_DONE            = (1 << 19),    /* 6xxx: IRQ coalescing */
         TRAN_HI_DONE            = (1 << 20),    /* 6xxx: IRQ coalescing */
+        PORTS_0_3_COAL_DONE     = (1 << 8),
+        PORTS_4_7_COAL_DONE     = (1 << 17),
         PORTS_0_7_COAL_DONE     = (1 << 21),    /* 6xxx: IRQ coalescing */
         GPIO_INT                = (1 << 22),
         SELF_INT                = (1 << 23),
         TWSI_INT                = (1 << 24),
         HC_MAIN_RSVD            = (0x7f << 25), /* bits 31-25 */
+        HC_MAIN_RSVD_5          = (0x1fff << 19), /* bits 31-19 */
         HC_MAIN_MASKED_IRQS     = (TRAN_LO_DONE | TRAN_HI_DONE |
                                    PORTS_0_7_COAL_DONE | GPIO_INT | TWSI_INT |
                                    HC_MAIN_RSVD),
+        HC_MAIN_MASKED_IRQS_5   = (PORTS_0_3_COAL_DONE | PORTS_4_7_COAL_DONE |
+                                   HC_MAIN_RSVD_5),
 
         /* SATAHC registers */
         HC_CFG_OFS              = 0,
@@ -2244,7 +2249,11 @@ static int mv_init_host(struct pci_dev *pdev, struct ata_probe_ent *probe_ent,
 
         /* and unmask interrupt generation for host regs */
         writelfl(PCI_UNMASK_ALL_IRQS, mmio + PCI_IRQ_MASK_OFS);
-        writelfl(~HC_MAIN_MASKED_IRQS, mmio + HC_MAIN_IRQ_MASK_OFS);
+
+        if (IS_50XX(hpriv))
+                writelfl(~HC_MAIN_MASKED_IRQS_5, mmio + HC_MAIN_IRQ_MASK_OFS);
+        else
+                writelfl(~HC_MAIN_MASKED_IRQS, mmio + HC_MAIN_IRQ_MASK_OFS);
 
         VPRINTK("HC MAIN IRQ cause/mask=0x%08x/0x%08x "
                 "PCI int cause/mask=0x%08x/0x%08x\n",