Commit e90d20c9 authored by Greg Kroah-Hartman's avatar Greg Kroah-Hartman
Browse files

Merge tag 'mhi-fixes-v5.18' of... 

Merge tag 'mhi-fixes-v5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/mani/mhi into char-misc-linus

Manivannan writes:

MHI fixes for v5.18

Couple of patches fixing the hibernation issue seen on MHI endpoint devices like
SDX65 modems:

- During hibernation, the host puts the device into D3cold after thaw() stage.
But at that time, the device would be in M0 state. So the device emits a
warning (not visible to the host but to device firmware only) stating invalid
transition. This is fixed by adding a poweroff() callback that puts the device
into M3 before D3cold.

- There is a possibility that the recovery worker might be running while trying
to powerdown the device. So flush the recovery worker before that.

* tag 'mhi-fixes-v5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/mani/mhi:
  bus: mhi: host: pci_generic: Flush recovery worker during freeze
  bus: mhi: host: pci_generic: Add missing poweroff() PM callback
parents ce522ba9 c38f83ba

drivers/bus/mhi/host/pci_generic.c

+2 −0
Original line number Diff line number Diff line
@@ -1060,6 +1060,7 @@ static int __maybe_unused mhi_pci_freeze(struct device *dev) 
	 * the intermediate restore kernel reinitializes MHI device with new

	 * context.

	 */

	flush_work(&mhi_pdev->recovery_work);

	if (test_and_clear_bit(MHI_PCI_DEV_STARTED, &mhi_pdev->status)) {

		mhi_power_down(mhi_cntrl, true);

		mhi_unprepare_after_power_down(mhi_cntrl);
@@ -1085,6 +1086,7 @@ static const struct dev_pm_ops mhi_pci_pm_ops = { 
	.resume = mhi_pci_resume,

	.freeze = mhi_pci_freeze,

	.thaw = mhi_pci_restore,

	.poweroff = mhi_pci_freeze,

	.restore = mhi_pci_restore,

#endif

};