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[PATCH] ahci: remove IRQ mask clearing from init_controller() 

Initial IRQ mask clearing is done by libata-core by freezing all ports
prior to requesting IRQ.  Remove redundant IRQ clearing from
init_controller().

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Tejun Heo 2006-08-07 11:39:04 +09:00 committed by Jeff Garzik
parent 80289167fd
commit f4b5cc8741
1 changed files with 1 additions and 2 deletions
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3
drivers/scsi/ahci.c
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@ -662,14 +662,13 @@ static void ahci_init_controller(void __iomem *mmio, struct pci_dev *pdev,
VPRINTK("PORT_SCR_ERR 0x%x\n", tmp); VPRINTK("PORT_SCR_ERR 0x%x\n", tmp);
writel(tmp, port_mmio + PORT_SCR_ERR); writel(tmp, port_mmio + PORT_SCR_ERR);
/* clear & turn off port IRQ */ /* clear port IRQ */
tmp = readl(port_mmio + PORT_IRQ_STAT); tmp = readl(port_mmio + PORT_IRQ_STAT);
VPRINTK("PORT_IRQ_STAT 0x%x\n", tmp); VPRINTK("PORT_IRQ_STAT 0x%x\n", tmp);
if (tmp) if (tmp)
writel(tmp, port_mmio + PORT_IRQ_STAT); writel(tmp, port_mmio + PORT_IRQ_STAT);
writel(1 << i, mmio + HOST_IRQ_STAT); writel(1 << i, mmio + HOST_IRQ_STAT);
writel(0, port_mmio + PORT_IRQ_MASK);
} }
tmp = readl(mmio + HOST_CTL); tmp = readl(mmio + HOST_CTL);