diff options
| author | Loic Poulain <loic.poulain@linaro.org> | 2021-03-19 16:50:37 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-05-12 08:39:37 +0200 |
| commit | cf641232176d457db08a63338a20ac1a27cb8133 (patch) | |
| tree | cc4442451df19f038b7db25857d0207de56d4a9f /drivers/bus | |
| parent | 29792079690913fdc28ec68271cd82ac5c5a0b62 (diff) | |
bus: mhi: pci_generic: Implement PCI shutdown callback
[ Upstream commit 757072abe1c0b67cb226936c709291889658a222 ]
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@linaro.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/1616169037-7969-1-git-send-email-loic.poulain@linaro.org
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/bus')
| -rw-r--r-- | drivers/bus/mhi/pci_generic.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/bus/mhi/pci_generic.c b/drivers/bus/mhi/pci_generic.c index 356c19ce4bbf..ef549c695b55 100644 --- a/drivers/bus/mhi/pci_generic.c +++ b/drivers/bus/mhi/pci_generic.c @@ -516,6 +516,12 @@ 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); @@ -686,6 +692,7 @@ 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 }; |