[dpdk-dev] [PATCH v2 25/42] net/e1000/base: increased timeout for ME ULP exit

[Guinan Sun]

Due timing issues in WHL and since recovery by host is
not always supported, increased timeout for ME to finish
ULP exit flow for Nahum before timer expiration.

Signed-off-by: Efrati Nir <nir.efrati at intel.com>
Signed-off-by: Guinan Sun <guinanx.sun at intel.com>
---
 drivers/net/e1000/base/e1000_ich8lan.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/net/e1000/base/e1000_ich8lan.c b/drivers/net/e1000/base/e1000_ich8lan.c
index 1dc29553e..b79e3bad8 100644
--- a/drivers/net/e1000/base/e1000_ich8lan.c
+++ b/drivers/net/e1000/base/e1000_ich8lan.c
@@ -1268,6 +1268,7 @@ s32 e1000_enable_ulp_lpt_lp(struct e1000_hw *hw, bool to_sx)
 s32 e1000_disable_ulp_lpt_lp(struct e1000_hw *hw, bool force)
 {
 	s32 ret_val = E1000_SUCCESS;
+	u8 ulp_exit_timeout = 30;
 	u32 mac_reg;
 	u16 phy_reg;
 	int i = 0;
@@ -1289,10 +1290,12 @@ s32 e1000_disable_ulp_lpt_lp(struct e1000_hw *hw, bool force)
 			E1000_WRITE_REG(hw, E1000_H2ME, mac_reg);
 		}
 
-		/* Poll up to 300msec for ME to clear ULP_CFG_DONE. */
+		if (hw->mac.type == e1000_pch_cnp)
+			ulp_exit_timeout = 100;
+
 		while (E1000_READ_REG(hw, E1000_FWSM) &
 		       E1000_FWSM_ULP_CFG_DONE) {
-			if (i++ == 30) {
+			if (i++ == ulp_exit_timeout) {
 				ret_val = -E1000_ERR_PHY;
 				goto out;
 			}
-- 
2.17.1