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[3/5] e1000e: do not toggle LANPHYPC value bit when PHY reset is blocked

Message ID 1418725700-31465-4-git-send-email-Yanjun.Zhu@windriver.com
State Awaiting Upstream, archived
Delegated to: David Miller
Headers show

Commit Message

Zhu Yanjun Dec. 16, 2014, 10:28 a.m. UTC 
2.6.x kernels require a similar logic change as commit 6cc7aae 
[e1000e: do not toggle LANPHYPC value bit when PHY reset is blocked]
introduces for newer kernels.

When PHY reset is intentionally blocked on 82577/8/9, do not toggle the
LANPHYPC value bit (essentially performing a hard power reset of the
device) otherwise the PHY can be put into an unknown state.

Cleanup whitespace in the same function.

[yanjun.zhu: whitespace remains unchanged]

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: Zhu Yanjun <Yanjun.Zhu@windriver.com>
---
 drivers/net/e1000e/ich8lan.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
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Patch

diff --git a/drivers/net/e1000e/ich8lan.c b/drivers/net/e1000e/ich8lan.c
index c4b2d15..8c7e4aa 100644
--- a/drivers/net/e1000e/ich8lan.c
+++ b/drivers/net/e1000e/ich8lan.c
@@ -280,7 +280,8 @@  static s32 e1000_init_phy_params_pchlan(struct e1000_hw *hw)
 	phy->ops.write_phy_reg_locked = e1000_write_phy_reg_hv_locked;
 	phy->autoneg_mask             = AUTONEG_ADVERTISE_SPEED_DEFAULT;
 
-	if (!(er32(FWSM) & E1000_ICH_FWSM_FW_VALID)) {
+	if (!(er32(FWSM) & E1000_ICH_FWSM_FW_VALID) && 
+		!e1000_check_reset_block(hw)) {
 		/*Set Phy Config Counter to 50msec */
 		ctrl = er32(FEXTNVM3);
 		ctrl &= ~E1000_FEXTNVM3_PHY_CFG_COUNTER_MASK;