From: Tim Harvey <tharvey@gateworks.com>
Date: Tue, 19 May 2015 17:01:20 +0000 (-0700)
Subject: e1000: remove unnecessary clearing of SWSM.SWSM_SMBI
X-Git-Tag: v2015.10-rc2~61^2~15
X-Git-Url: https://git.sur5r.net/?a=commitdiff_plain;h=48b168bbfa97e4ebb7c093696c27dfb32bf82ad8;p=u-boot

e1000: remove unnecessary clearing of SWSM.SWSM_SMBI

remove unnecessary clearing of SWSM.SWSM_SMBI when obtaining the SW
semaphore. This was introduced in 951860634fdb557bbb58e0f99215391bc0c29779
while adding i210 support and should be now resolved by releasing the
semaphore when no longer needed.

Cc: Marcel Ziswiler <marcel@ziswiler.com>
Cc: Marek Vasut <marex@denx.de>
Cc: Aneesh Bansal <aneesh.bansal@freescale.com>
Cc: Naveen Burmi <NaveenBurmi@freescale.com>
Cc: Po Liu <po.liu@freescale.com>
Cc: Bin Meng <bmeng.cn@gmail.com>
Cc: Alison Wang <alison.wang@freescale.com>
Cc: Reinhard Arlt <reinhard.arlt@esd-electronics.com>
Cc: Shengzhou Liu <Shengzhou.Liu@freescale.com>
Cc: York Sun <yorksun@freescale.com>
Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
---

diff --git a/drivers/net/e1000.c b/drivers/net/e1000.c
index 739d24b280..ecd1a52e47 100644
--- a/drivers/net/e1000.c
+++ b/drivers/net/e1000.c
@@ -996,10 +996,6 @@ e1000_get_software_semaphore(struct e1000_hw *hw)
 
 	DEBUGFUNC();
 
-		swsm = E1000_READ_REG(hw, SWSM);
-		swsm &= ~E1000_SWSM_SMBI;
-		E1000_WRITE_REG(hw, SWSM, swsm);
-
 	if (hw->mac_type != e1000_80003es2lan)
 		return E1000_SUCCESS;