Commit 8bf7a7b8 authored by Mark Rustad's avatar Mark Rustad Committed by Jeff Kirsher
Browse files

ixgbe: Fix CS4227-related semaphore error on reset failure

If the reset never completes, it is necessary to retake the
semaphore before returning, because the caller will release
the semaphore.

Signed-off-by: default avatarMark Rustad <>
Tested-by: default avatarDarin Miller <>
Signed-off-by: default avatarJeff Kirsher <>
parent 72bfd32d
......@@ -198,6 +198,7 @@ static s32 ixgbe_write_pe(struct ixgbe_hw *hw, u8 reg, u8 value)
* ixgbe_reset_cs4227 - Reset CS4227 using port expander
* @hw: pointer to hardware structure
* This function assumes that the caller has acquired the proper semaphore.
* Returns error code
static s32 ixgbe_reset_cs4227(struct ixgbe_hw *hw)
......@@ -296,6 +297,14 @@ static void ixgbe_check_cs4227(struct ixgbe_hw *hw)
hw->mac.ops.release_swfw_sync(hw, swfw_mask);
/* If still pending, assume other instance failed. */
if (retry == IXGBE_CS4227_RETRIES) {
status = hw->mac.ops.acquire_swfw_sync(hw, swfw_mask);
if (status) {
hw_err(hw, "semaphore failed with %d\n", status);
/* Reset the CS4227. */
status = ixgbe_reset_cs4227(hw);
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