e1000e: Enable GPT clock before sending message to CSME
authorSasha Neftin <sasha.neftin@intel.com>
Sun, 8 May 2022 07:09:05 +0000 (10:09 +0300)
committerTony Nguyen <anthony.l.nguyen@intel.com>
Thu, 14 Jul 2022 16:16:47 +0000 (09:16 -0700)
commitb49feacbeffc7635cc6692cbcc6a1eae2c17da6f
tree78c432707aca8885ed583bd2a2e61d63e915f5d7
parentcd72e61bad145a0968df85193dcf1261cb66c4c6
e1000e: Enable GPT clock before sending message to CSME

On corporate (CSME) ADL systems, the Ethernet Controller may stop working
("HW unit hang") after exiting from the s0ix state. The reason is that
CSME misses the message sent by the host. Enabling the dynamic GPT clock
solves this problem. This clock is cleared upon HW initialization.

Fixes: 3e55d231716e ("e1000e: Add handshake with the CSME to support S0ix")
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=214821
Reviewed-by: Dima Ruinskiy <dima.ruinskiy@intel.com>
Signed-off-by: Sasha Neftin <sasha.neftin@intel.com>
Tested-by: Chia-Lin Kao (AceLan) <acelan.kao@canonical.com>
Tested-by: Naama Meir <naamax.meir@linux.intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
drivers/net/ethernet/intel/e1000e/netdev.c