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bus: mhi: host: Panic if suspend ack times out

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If suspend ack does not arrive on time, MHI host currently bails
out silently. Panic if this happens such that issues can be pin-
pointed to root causes.

Change-Id: Ic2201aafc2a55d572311ec9ee8a8b9c8a60a1da4
Signed-off-by: Bhaumik Bhatt <bbhatt@codeaurora.org>
Signed-off-by: Lazarus Motha <quic_lmotha@quicinc.com>
This commit is contained in:
Bhaumik Bhatt 2021-06-24 15:30:14 -07:00 committed by Lazarus Motha
parent 9204f9fa1e
commit d5d939f536
1 changed files with 5 additions and 1 deletions
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6
drivers/bus/mhi/host/pm.c
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@ -884,7 +884,11 @@ int mhi_pm_suspend(struct mhi_controller *mhi_cntrl)
MHI_PM_IN_ERROR_STATE(mhi_cntrl->pm_state),
msecs_to_jiffies(mhi_cntrl->timeout_ms));
if (!ret || MHI_PM_IN_ERROR_STATE(mhi_cntrl->pm_state)) {
if (!ret) {
mhi_debug_reg_dump(mhi_cntrl);
panic("Timedout waiting for M3 ACK");
return -EIO;
} else if (MHI_PM_IN_ERROR_STATE(mhi_cntrl->pm_state)) {
dev_err(dev,
"Did not enter M3 state, MHI state: %s, PM state: %s\n",
mhi_state_str(mhi_cntrl->dev_state),