From 34b5d2aa355a8d57ec2fc5e83496c46b381eb8ed Mon Sep 17 00:00:00 2001 From: Manivannan Sadhasivam Date: Fri, 8 Apr 2022 20:30:39 +0530 Subject: [PATCH] bus: mhi: host: pci_generic: Flush recovery worker during freeze commit c38f83bae4037023827c85e045841d0421f85034 upstream. It is possible that the recovery work might be running while the freeze gets executed (during hibernation etc.,). Currently, we don't powerdown the stack if it is not up but if the recovery work completes after freeze, then the device will be up afterwards. This will not be a sane situation. So let's flush the recovery worker before trying to powerdown the device. Cc: stable@vger.kernel.org Fixes: 5f0c2ee1fe8d ("bus: mhi: pci-generic: Fix hibernation") Reported-by: Bhaumik Vasav Bhatt Reviewed-by: Bhaumik Vasav Bhatt Link: https://lore.kernel.org/r/20220408150039.17297-1-manivannan.sadhasivam@linaro.org Signed-off-by: Manivannan Sadhasivam Signed-off-by: Greg Kroah-Hartman --- drivers/bus/mhi/pci_generic.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/bus/mhi/pci_generic.c b/drivers/bus/mhi/pci_generic.c index 2e8d9b6e500c7..0982642a7907e 100644 --- a/drivers/bus/mhi/pci_generic.c +++ b/drivers/bus/mhi/pci_generic.c @@ -1020,6 +1020,7 @@ 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); -- 2.30.2