ffd32ea6b1
Depending on BIOS configuration IOSM driver exchanges
protocol required for putting device into D3L2 or D3L1.2.
ipc_pcie_suspend_s2idle() is implemented to put device to D3L1.2.
This patch forces PCI core know this device should stay at D0.
- pci_save_state()is expensive since it does a lot of slow PCI
config reads.
The reported issue is not observed on x86 platform. The supurios
wake on AMD platform needs to be futher debugged with orignal patch
submitter [1]. Also the impact of adding pci_save_state() needs to be
assessed by testing it on other platforms.
This reverts commit f4dd5174e273("net: wwan: iosm: Keep device
at D0 for s2idle case").
[1] https://lore.kernel.org/all/20211224081914.345292-2-kai.heng.feng@canonical.com/
Signed-off-by: M Chetan Kumar <m.chetan.kumar@linux.intel.com>
Link: https://lore.kernel.org/r/20220104150213.1894-1-m.chetan.kumar@linux.intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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|---|---|---|
| .. | ||
| iosm | ||
| Kconfig | ||
| Makefile | ||
| mhi_wwan_ctrl.c | ||
| mhi_wwan_mbim.c | ||
| qcom_bam_dmux.c | ||
| rpmsg_wwan_ctrl.c | ||
| wwan_core.c | ||
| wwan_hwsim.c | ||