From: David Ertman <davidx.m.ertman@intel.com>
Date: Wed, 26 Feb 2014 00:02:24 +0000 (+0000)
Subject: e1000e: Fix not generating an error on invalid load parameter
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=5bb731760810b30d67096cbdded96addba4f1292;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git

e1000e: Fix not generating an error on invalid load parameter

Valid values for InterruptThrottleRate are 10-100000, or one of
0, 1, 3, 4.  '2' is not valid.  This is a legacy from the branching
from the e1000 driver code that e1000e was based from.

Prior to this patch, if the e1000e driver  was loaded with a forced
invalid InterruptThrottleRate of '2', then no throttle rate would be
set and no error message generated.

Now, a message will be generated that an invalid value was used and the
value for InterruptThrottleRate will be set to the default value.

Signed-off-by: Dave Ertman <davidx.m.ertman@intel.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---

diff --git a/drivers/net/ethernet/intel/e1000e/param.c b/drivers/net/ethernet/intel/e1000e/param.c
index 01797b73e20c..d0ac0f3249c8 100644
--- a/drivers/net/ethernet/intel/e1000e/param.c
+++ b/drivers/net/ethernet/intel/e1000e/param.c
@@ -374,6 +374,12 @@ void e1000e_check_options(struct e1000_adapter *adapter)
 				 "%s set to dynamic mode\n", opt.name);
 			adapter->itr = 20000;
 			break;
+		case 2:
+			dev_info(&adapter->pdev->dev,
+				 "%s Invalid mode - setting default\n",
+				 opt.name);
+			adapter->itr_setting = opt.def;
+			/* fall-through */
 		case 3:
 			dev_info(&adapter->pdev->dev,
 				 "%s set to dynamic conservative mode\n",