e1000e: do not disable receiver on 82574/82583
Due to a hardware erratum, the receiver on 82574 and 82583 should not be
stopped once it has been started.
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/e1000e/netdev.c b/drivers/net/e1000e/netdev.c
index ab4be80..c0406b1 100644
--- a/drivers/net/e1000e/netdev.c
+++ b/drivers/net/e1000e/netdev.c
@@ -2915,7 +2915,8 @@
/* disable receives while setting up the descriptors */
rctl = er32(RCTL);
- ew32(RCTL, rctl & ~E1000_RCTL_EN);
+ if (!(adapter->flags2 & FLAG2_NO_DISABLE_RX))
+ ew32(RCTL, rctl & ~E1000_RCTL_EN);
e1e_flush();
usleep_range(10000, 20000);
@@ -3394,7 +3395,8 @@
/* disable receives in the hardware */
rctl = er32(RCTL);
- ew32(RCTL, rctl & ~E1000_RCTL_EN);
+ if (!(adapter->flags2 & FLAG2_NO_DISABLE_RX))
+ ew32(RCTL, rctl & ~E1000_RCTL_EN);
/* flush and sleep below */
netif_stop_queue(netdev);
@@ -3403,6 +3405,7 @@
tctl = er32(TCTL);
tctl &= ~E1000_TCTL_EN;
ew32(TCTL, tctl);
+
/* flush both disables and wait for them to finish */
e1e_flush();
usleep_range(10000, 20000);