e1000e: 82574/82583 Tx hang workaround
On 82574/82583, there is a hardware bug which might cause a Tx hang when
the internal buffer is full. Setting this bit enables a hardware fix to
work around the issue.
Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
diff --git a/drivers/net/ethernet/intel/e1000e/82571.c b/drivers/net/ethernet/intel/e1000e/82571.c
index a3e65fd..0609ac6 100644
--- a/drivers/net/ethernet/intel/e1000e/82571.c
+++ b/drivers/net/ethernet/intel/e1000e/82571.c
@@ -1227,6 +1227,10 @@
case e1000_82572:
reg |= (1 << 23) | (1 << 24) | (1 << 25) | (1 << 26);
break;
+ case e1000_82574:
+ case e1000_82583:
+ reg |= (1 << 26);
+ break;
default:
break;
}