[dpdk-dev] [PATCH 17/34] e1000/base: prevent ulp flow if cable connected
Wenzhuo Lu
wenzhuo.lu at intel.com
Wed Oct 14 08:34:22 CEST 2015
Enabling ulp on link down when cable is connect caused an infinite
loop of linkup/down indications in the NDIS driver.
After discussed, correct flow is to enable ULP only when cable is
disconnected.
Signed-off-by: Wenzhuo Lu <wenzhuo.lu at intel.com>
---
drivers/net/e1000/base/e1000_ich8lan.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/net/e1000/base/e1000_ich8lan.c b/drivers/net/e1000/base/e1000_ich8lan.c
index 228d4c5..5077a3f 100644
--- a/drivers/net/e1000/base/e1000_ich8lan.c
+++ b/drivers/net/e1000/base/e1000_ich8lan.c
@@ -1089,6 +1089,9 @@ s32 e1000_enable_ulp_lpt_lp(struct e1000_hw *hw, bool to_sx)
(E1000_READ_REG(hw, E1000_FEXT) &
E1000_FEXT_PHY_CABLE_DISCONNECTED) ? "" : "not",
i * 50);
+ if (!(E1000_READ_REG(hw, E1000_FEXT) &
+ E1000_FEXT_PHY_CABLE_DISCONNECTED))
+ return 0;
}
if (E1000_READ_REG(hw, E1000_FWSM) & E1000_ICH_FWSM_FW_VALID) {
--
1.9.3
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