[PATCH 09/37] ixgbe/base: power down the x550em PHY on overtemp events
From: Wenzhuo Lu <hidden>
Date: 2015-06-24 03:26:54
Subsystem:
networking drivers, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
This patch powers down the x550em PHY on over-temp events. The PHY firmware is supposed to do this autonomously but that isn't implemented. The short-term stop-gap solution is for SW to power down the PHY when it reports an overtemp event. Signed-off-by: Wenzhuo Lu <redacted> --- drivers/net/ixgbe/base/ixgbe_x550.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ixgbe/base/ixgbe_x550.c b/drivers/net/ixgbe/base/ixgbe_x550.c
index 1ae79d1..57ecaac 100644
--- a/drivers/net/ixgbe/base/ixgbe_x550.c
+++ b/drivers/net/ixgbe/base/ixgbe_x550.c@@ -1193,8 +1193,11 @@ STATIC s32 ixgbe_get_lasi_ext_t_x550em(struct ixgbe_hw *hw, bool *lsc) return status; /* If high temperature failure, then return over temp error and exit */ - if (reg & IXGBE_MDIO_GLOBAL_ALM_1_HI_TMP_FAIL) + if (reg & IXGBE_MDIO_GLOBAL_ALM_1_HI_TMP_FAIL) { + /* power down the PHY in case the PHY FW didn't already */ + ixgbe_set_copper_phy_power(hw, false); return IXGBE_ERR_OVERTEMP; + } /* Vendor alarm 2 triggered */ status = hw->phy.ops.read_reg(hw, IXGBE_MDIO_GLOBAL_CHIP_STD_INT_FLAG,
--
1.9.3