Store interrupt value
Use a stored value for which interrupts to enable. Changing this allows
us to selectively turn off certain interrupts later and have them
stay off.
Signed-off-by: Kristen Carlson Accardi [EMAIL PROTECTED]
Index: 2.6-git/drivers/ata/ahci.c
===
--- 2.6-git.orig/drivers/ata/ahci.c
+++ 2.6-git/drivers/ata/ahci.c
@@ -175,6 +175,7 @@ enum {
AHCI_FLAG_32BIT_ONLY= (1 28), /* force 32bit */
AHCI_FLAG_MV_PATA = (1 29), /* PATA port */
AHCI_FLAG_NO_MSI= (1 30), /* no PCI MSI */
+ AHCI_FLAG_NO_HOTPLUG= (1 31), /* ignore PxSERR.DIAG.N */
AHCI_FLAG_COMMON= ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA |
@@ -215,6 +216,7 @@ struct ahci_port_priv {
unsigned intncq_saw_d2h:1;
unsigned intncq_saw_dmas:1;
unsigned intncq_saw_sdb:1;
+ u32 intr_mask; /* interrupts to enable */
};
static int ahci_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val);
@@ -1518,6 +1520,7 @@ static void ahci_thaw(struct ata_port *a
void __iomem *mmio = ap-host-iomap[AHCI_PCI_BAR];
void __iomem *port_mmio = ahci_port_base(ap);
u32 tmp;
+ struct ahci_port_priv *pp = ap-private_data;
/* clear IRQ */
tmp = readl(port_mmio + PORT_IRQ_STAT);
@@ -1525,7 +1528,7 @@ static void ahci_thaw(struct ata_port *a
writel(1 ap-port_no, mmio + HOST_IRQ_STAT);
/* turn IRQ back on */
- writel(DEF_PORT_IRQ, port_mmio + PORT_IRQ_MASK);
+ writel(pp-intr_mask, port_mmio + PORT_IRQ_MASK);
}
static void ahci_error_handler(struct ata_port *ap)
@@ -1679,6 +1682,12 @@ static int ahci_port_start(struct ata_po
pp-cmd_tbl = mem;
pp-cmd_tbl_dma = mem_dma;
+ /*
+* Save off initial list of interrupts to be enabled.
+* This could be changed later
+*/
+ pp-intr_mask = DEF_PORT_IRQ;
+
ap-private_data = pp;
/* engage engines, captain */
-
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