From: Yong Liu <yong.liu@intel.com>
Date: Thu, 29 Oct 2015 09:18:43 +0000 (+0800)
Subject: e1000: restrict link interrupt setup scope
X-Git-Tag: spdx-start~8294
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=667b9313f9ed513057fda21ecd92cb8fa13bb7e1;p=dpdk.git

e1000: restrict link interrupt setup scope

Only mask lsc interrupt bit when setup device interrupt.

Signed-off-by: Marvin Liu <yong.liu@intel.com>
Acked-by: Cunming Liang <cunming.liang@intel.com>
---

diff --git a/drivers/net/e1000/em_ethdev.c b/drivers/net/e1000/em_ethdev.c
index 912f5dd8b3..4e75101940 100644
--- a/drivers/net/e1000/em_ethdev.c
+++ b/drivers/net/e1000/em_ethdev.c
@@ -1268,11 +1268,14 @@ em_intr_disable(struct e1000_hw *hw)
 static int
 eth_em_interrupt_setup(struct rte_eth_dev *dev)
 {
+	uint32_t regval;
 	struct e1000_hw *hw =
 		E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
 
-	E1000_WRITE_REG(hw, E1000_IMS, E1000_ICR_LSC);
-	rte_intr_enable(&(dev->pci_dev->intr_handle));
+	/* clear interrupt */
+	E1000_READ_REG(hw, E1000_ICR);
+	regval = E1000_READ_REG(hw, E1000_IMS);
+	E1000_WRITE_REG(hw, E1000_IMS, regval | E1000_ICR_LSC);
 	return (0);
 }