[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>
diff --git a/drivers/scsi/ahci.c b/drivers/scsi/ahci.c
index f5734a9..68fd766 100644
--- a/drivers/scsi/ahci.c
+++ b/drivers/scsi/ahci.c
@@ -662,14 +662,13 @@
VPRINTK("PORT_SCR_ERR 0x%x\n", tmp);
writel(tmp, port_mmio + PORT_SCR_ERR);
- /* clear & turn off port IRQ */
+ /* clear port IRQ */
tmp = readl(port_mmio + PORT_IRQ_STAT);
VPRINTK("PORT_IRQ_STAT 0x%x\n", tmp);
if (tmp)
writel(tmp, port_mmio + PORT_IRQ_STAT);
writel(1 << i, mmio + HOST_IRQ_STAT);
- writel(0, port_mmio + PORT_IRQ_MASK);
}
tmp = readl(mmio + HOST_CTL);