From: Jeffrey Hugo <[email protected]> Powerdown is necessary if mhi_sync_power_up fails due to a timeout, to clean up the resources. Otherwise a BUG could be triggered when attempting to clean up MSIs because the IRQ is still active from a request_irq().
Signed-off-by: Jeffrey Hugo <[email protected]> Reviewed-by: Hemant Kumar <[email protected]> Reviewed-by: Manivannan Sadhasivam <[email protected]> Signed-off-by: Manivannan Sadhasivam <[email protected]> --- drivers/bus/mhi/core/pm.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/bus/mhi/core/pm.c b/drivers/bus/mhi/core/pm.c index 3529419d076b..e7c831867a23 100644 --- a/drivers/bus/mhi/core/pm.c +++ b/drivers/bus/mhi/core/pm.c @@ -1045,7 +1045,11 @@ int mhi_sync_power_up(struct mhi_controller *mhi_cntrl) MHI_PM_IN_ERROR_STATE(mhi_cntrl->pm_state), msecs_to_jiffies(mhi_cntrl->timeout_ms)); - return (MHI_IN_MISSION_MODE(mhi_cntrl->ee)) ? 0 : -EIO; + ret = (MHI_IN_MISSION_MODE(mhi_cntrl->ee)) ? 0 : -ETIMEDOUT; + if (ret) + mhi_power_down(mhi_cntrl, false); + + return ret; } EXPORT_SYMBOL(mhi_sync_power_up); -- 2.17.1
