From: Sasha Neftin <sasha.neftin@intel.com>
Date: Thu, 24 Jun 2021 12:02:48 -0700
Subject: e1000e: Check the PCIm state
Patch-mainline: v5.14-rc1
Git-commit: 2e7256f12cdb16eaa2515b6231d665044a07c51a
References: git-fixes
Complete to commit def4ec6dce393e ("e1000e: PCIm function state support")
Check the PCIm state only on CSME systems. There is no point to do this
check on non CSME systems.
This patch fixes a generation a false-positive warning:
"Error in exiting dmoff"
Fixes: def4ec6dce39 ("e1000e: PCIm function state support")
Signed-off-by: Sasha Neftin <sasha.neftin@intel.com>
Tested-by: Dvora Fuxbrumer <dvorax.fuxbrumer@linux.intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/net/ethernet/intel/e1000e/netdev.c | 22 ++++++++++++----------
1 file changed, 12 insertions(+), 10 deletions(-)
--- a/drivers/net/ethernet/intel/e1000e/netdev.c
+++ b/drivers/net/ethernet/intel/e1000e/netdev.c
@@ -5203,18 +5203,20 @@ static void e1000_watchdog_task(struct w
pm_runtime_resume(netdev->dev.parent);
/* Checking if MAC is in DMoff state*/
- pcim_state = er32(STATUS);
- while (pcim_state & E1000_STATUS_PCIM_STATE) {
- if (tries++ == dmoff_exit_timeout) {
- e_dbg("Error in exiting dmoff\n");
- break;
- }
- usleep_range(10000, 20000);
+ if (er32(FWSM) & E1000_ICH_FWSM_FW_VALID) {
pcim_state = er32(STATUS);
+ while (pcim_state & E1000_STATUS_PCIM_STATE) {
+ if (tries++ == dmoff_exit_timeout) {
+ e_dbg("Error in exiting dmoff\n");
+ break;
+ }
+ usleep_range(10000, 20000);
+ pcim_state = er32(STATUS);
- /* Checking if MAC exited DMoff state */
- if (!(pcim_state & E1000_STATUS_PCIM_STATE))
- e1000_phy_hw_reset(&adapter->hw);
+ /* Checking if MAC exited DMoff state */
+ if (!(pcim_state & E1000_STATUS_PCIM_STATE))
+ e1000_phy_hw_reset(&adapter->hw);
+ }
}
/* update snapshot of PHY registers on LSC */