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Commit a514a94b authored by Sujeev Dias's avatar Sujeev Dias Committed by Gerrit - the friendly Code Review server
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mhi: core: check MHI host state instead of MHI dev state for LPM exit state 



When a client request to disable MHI low power mode, it's
important MHI host only return after exiting MHI low power modes.
Otherwise, clients may get un-clocked register access when
accessing physical link. By checking host state, we're guaranteed
to return only after exiting low power states.

CRs-Fixed: 2320851
Change-Id: I45f5f8463fba2c35ccd6c9e67e749d9d4fc3d904
Signed-off-by: default avatarSujeev Dias <sdias@codeaurora.org>
parent f9d0d705

drivers/bus/mhi/core/mhi_pm.c

+1 −1
Original line number Diff line number Diff line
@@ -1033,7 +1033,7 @@ int __mhi_device_get_sync(struct mhi_controller *mhi_cntrl) 
	read_unlock_bh(&mhi_cntrl->pm_lock);



	ret = wait_event_timeout(mhi_cntrl->state_event,

				 mhi_cntrl->dev_state == MHI_STATE_M0 ||

				 mhi_cntrl->pm_state == MHI_PM_M0 ||

				 MHI_PM_IN_ERROR_STATE(mhi_cntrl->pm_state),

				 msecs_to_jiffies(mhi_cntrl->timeout_ms));