e1000e: separate out PHY statistics register updates
The 82577/82578 parts have half-duplex statistics in PHY registers. These
need only be read when in half-duplex and should all be read at once rather
than one at a time to prevent excessive cycles of acquiring/releasing the
PHY semaphore.
Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/e1000e/ich8lan.c b/drivers/net/e1000e/ich8lan.c
index 5d8fad3..70cd681 100644
--- a/drivers/net/e1000e/ich8lan.c
+++ b/drivers/net/e1000e/ich8lan.c
@@ -3503,6 +3503,7 @@
| FLAG_HAS_JUMBO_FRAMES
| FLAG_DISABLE_FC_PAUSE_TIME /* errata */
| FLAG_APME_IN_WUC,
+ .flags2 = FLAG2_HAS_PHY_STATS,
.pba = 26,
.max_hw_frame_size = 4096,
.get_variants = e1000_get_variants_ich8lan,