Deinit the device on shutdown to halt MHI/PCI operation on device
side. This change fixes floating device state with some hosts that
do not fully shutdown PCIe device when rebooting.
Signed-off-by: Loic Poulain <loic.poulain@xxxxxxxxxx>
---
drivers/bus/mhi/pci_generic.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/bus/mhi/pci_generic.c b/drivers/bus/mhi/pci_generic.c
index cbd2224..b104ab8 100644
--- a/drivers/bus/mhi/pci_generic.c
+++ b/drivers/bus/mhi/pci_generic.c
@@ -532,6 +532,12 @@ static void mhi_pci_remove(struct pci_dev *pdev)
mhi_unregister_controller(mhi_cntrl);
}
+static void mhi_pci_shutdown(struct pci_dev *pdev)
+{
+ mhi_pci_remove(pdev);
+ pci_set_power_state(pdev, PCI_D3hot);
+}
+
static void mhi_pci_reset_prepare(struct pci_dev *pdev)
{
struct mhi_pci_device *mhi_pdev = pci_get_drvdata(pdev);
@@ -704,6 +710,7 @@ static struct pci_driver mhi_pci_driver = {
.id_table = mhi_pci_id_table,
.probe = mhi_pci_probe,
.remove = mhi_pci_remove,
+ .shutdown = mhi_pci_shutdown,
.err_handler = &mhi_pci_err_handler,
.driver.pm = &mhi_pci_pm_ops
};
--
2.7.4
