pciehp: Remove useless hotplug interrupt enabling

Hotplug interrupt is enabled at initialization and nobody clears it.
So we need to setup it in each command. This patch removes redundant
codes about this.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by:  Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

drivers/pci/hotplug/pciehp_hpc.c

@@ -462,11 +462,6 @@ static int hpc_toggle_emi(struct slot *slot)
 
 	slot_cmd = EMI_CTRL;
 	cmd_mask = EMI_CTRL;
-	if (!pciehp_poll_mode) {
-		slot_cmd = slot_cmd | HP_INTR_ENABLE;
-		cmd_mask = cmd_mask | HP_INTR_ENABLE;
-	}
-
 	rc = pcie_write_cmd(slot->ctrl, slot_cmd, cmd_mask);
 	slot->last_emi_toggle = get_seconds();
 
@@ -494,11 +489,6 @@ static int hpc_set_attention_status(struct slot *slot, u8 value)
 		default:
 			return -1;
 	}
-	if (!pciehp_poll_mode) {
-		slot_cmd = slot_cmd | HP_INTR_ENABLE;
-		cmd_mask = cmd_mask | HP_INTR_ENABLE;
-	}
-
 	rc = pcie_write_cmd(ctrl, slot_cmd, cmd_mask);
 	dbg("%s: SLOTCTRL %x write cmd %x\n",
 	    __func__, ctrl->cap_base + SLOTCTRL, slot_cmd);
@@ -514,13 +504,7 @@ static void hpc_set_green_led_on(struct slot *slot)
 
 	slot_cmd = 0x0100;
 	cmd_mask = PWR_LED_CTRL;
-	if (!pciehp_poll_mode) {
-		slot_cmd = slot_cmd | HP_INTR_ENABLE;
-		cmd_mask = cmd_mask | HP_INTR_ENABLE;
-	}
-
 	pcie_write_cmd(ctrl, slot_cmd, cmd_mask);
-
 	dbg("%s: SLOTCTRL %x write cmd %x\n",
 	    __func__, ctrl->cap_base + SLOTCTRL, slot_cmd);
 }
@@ -533,11 +517,6 @@ static void hpc_set_green_led_off(struct slot *slot)
 
 	slot_cmd = 0x0300;
 	cmd_mask = PWR_LED_CTRL;
-	if (!pciehp_poll_mode) {
-		slot_cmd = slot_cmd | HP_INTR_ENABLE;
-		cmd_mask = cmd_mask | HP_INTR_ENABLE;
-	}
-
 	pcie_write_cmd(ctrl, slot_cmd, cmd_mask);
 	dbg("%s: SLOTCTRL %x write cmd %x\n",
 	    __func__, ctrl->cap_base + SLOTCTRL, slot_cmd);
@@ -551,13 +530,7 @@ static void hpc_set_green_led_blink(struct slot *slot)
 
 	slot_cmd = 0x0200;
 	cmd_mask = PWR_LED_CTRL;
-	if (!pciehp_poll_mode) {
-		slot_cmd = slot_cmd | HP_INTR_ENABLE;
-		cmd_mask = cmd_mask | HP_INTR_ENABLE;
-	}
-
 	pcie_write_cmd(ctrl, slot_cmd, cmd_mask);
-
 	dbg("%s: SLOTCTRL %x write cmd %x\n",
 	    __func__, ctrl->cap_base + SLOTCTRL, slot_cmd);
 }
@@ -607,16 +580,10 @@ static int hpc_power_on_slot(struct slot * slot)
 	cmd_mask = PWR_CTRL;
 	/* Enable detection that we turned off at slot power-off time */
 	if (!pciehp_poll_mode) {
-		slot_cmd = slot_cmd |
-		           PWR_FAULT_DETECT_ENABLE |
-		           MRL_DETECT_ENABLE |
-		           PRSN_DETECT_ENABLE |
-		           HP_INTR_ENABLE;
-		cmd_mask = cmd_mask |
-		           PWR_FAULT_DETECT_ENABLE |
-		           MRL_DETECT_ENABLE |
-		           PRSN_DETECT_ENABLE |
-		           HP_INTR_ENABLE;
+		slot_cmd |= (PWR_FAULT_DETECT_ENABLE | MRL_DETECT_ENABLE |
+			     PRSN_DETECT_ENABLE);
+		cmd_mask |= (PWR_FAULT_DETECT_ENABLE | MRL_DETECT_ENABLE |
+			     PRSN_DETECT_ENABLE);
 	}
 
 	retval = pcie_write_cmd(ctrl, slot_cmd, cmd_mask);
@@ -692,15 +659,10 @@ static int hpc_power_off_slot(struct slot * slot)
 	 * till the slot is powered on again.
 	 */
 	if (!pciehp_poll_mode) {
-		slot_cmd = (slot_cmd &
-		            ~PWR_FAULT_DETECT_ENABLE &
-		            ~MRL_DETECT_ENABLE &
-		            ~PRSN_DETECT_ENABLE) | HP_INTR_ENABLE;
-		cmd_mask = cmd_mask |
-			   PWR_FAULT_DETECT_ENABLE |
-			   MRL_DETECT_ENABLE |
-			   PRSN_DETECT_ENABLE |
-			   HP_INTR_ENABLE;
+		slot_cmd &= ~(PWR_FAULT_DETECT_ENABLE | MRL_DETECT_ENABLE |
+			      PRSN_DETECT_ENABLE);
+		cmd_mask |= (PWR_FAULT_DETECT_ENABLE | MRL_DETECT_ENABLE |
+			     PRSN_DETECT_ENABLE);
 	}
 
 	retval = pcie_write_cmd(ctrl, slot_cmd, cmd_mask);