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e1000e: Check the PCIm state 

[ Upstream commit 2e7256f12cdb16eaa2515b6231d665044a07c51a ]

Complete to commit def4ec6dce ("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: def4ec6dce ("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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Sasha Neftin 2021-06-24 12:02:48 -07:00 committed by Greg Kroah-Hartman
parent 48fa874498
commit 482e12bdc5
1 changed files with 12 additions and 10 deletions
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22
drivers/net/ethernet/intel/e1000e/netdev.c
View File

@ -5199,18 +5199,20 @@ static void e1000_watchdog_task(struct work_struct *work)
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 */