diff options
| author | Henry Lin <henryl@nvidia.com> | 2019-12-11 16:20:04 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-12-17 20:39:07 +0100 |
| commit | 839a996485c7159cee3c81b06ae7b3c206f4238f (patch) | |
| tree | 2952063ae97f7aa2ab65b5733fed41e472c8767f /drivers | |
| parent | 8c4d935cc494f9ede67820fa217850a31f26b4b5 (diff) | |
usb: xhci: only set D3hot for pci device
commit f2c710f7dca8457e88b4ac9de2060f011254f9dd upstream.
Xhci driver cannot call pci_set_power_state() on non-pci xhci host
controllers. For example, NVIDIA Tegra XHCI host controller which acts
as platform device with XHCI_SPURIOUS_WAKEUP quirk set in some platform
hits this issue during shutdown.
Cc: <stable@vger.kernel.org>
Fixes: 638298dc66ea ("xhci: Fix spurious wakeups after S5 on Haswell")
Signed-off-by: Henry Lin <henryl@nvidia.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20191211142007.8847-4-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/host/xhci-pci.c | 13 | ||||
| -rw-r--r-- | drivers/usb/host/xhci.c | 7 | ||||
| -rw-r--r-- | drivers/usb/host/xhci.h | 1 |
3 files changed, 16 insertions, 5 deletions
diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index 1de006aebec5..021a2d320acc 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -499,6 +499,18 @@ static int xhci_pci_resume(struct usb_hcd *hcd, bool hibernated) } #endif /* CONFIG_PM */ +static void xhci_pci_shutdown(struct usb_hcd *hcd) +{ + struct xhci_hcd *xhci = hcd_to_xhci(hcd); + struct pci_dev *pdev = to_pci_dev(hcd->self.controller); + + xhci_shutdown(hcd); + + /* Yet another workaround for spurious wakeups at shutdown with HSW */ + if (xhci->quirks & XHCI_SPURIOUS_WAKEUP) + pci_set_power_state(pdev, PCI_D3hot); +} + /*-------------------------------------------------------------------------*/ /* PCI driver selection metadata; PCI hotplugging uses this */ @@ -534,6 +546,7 @@ static int __init xhci_pci_init(void) #ifdef CONFIG_PM xhci_pci_hc_driver.pci_suspend = xhci_pci_suspend; xhci_pci_hc_driver.pci_resume = xhci_pci_resume; + xhci_pci_hc_driver.shutdown = xhci_pci_shutdown; #endif return pci_register_driver(&xhci_pci_driver); } diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index 465d7fd507ad..abc08aa9cd4e 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -717,7 +717,7 @@ static void xhci_stop(struct usb_hcd *hcd) * * This will only ever be called with the main usb_hcd (the USB3 roothub). */ -static void xhci_shutdown(struct usb_hcd *hcd) +void xhci_shutdown(struct usb_hcd *hcd) { struct xhci_hcd *xhci = hcd_to_xhci(hcd); @@ -736,11 +736,8 @@ static void xhci_shutdown(struct usb_hcd *hcd) xhci_dbg_trace(xhci, trace_xhci_dbg_init, "xhci_shutdown completed - status = %x", readl(&xhci->op_regs->status)); - - /* Yet another workaround for spurious wakeups at shutdown with HSW */ - if (xhci->quirks & XHCI_SPURIOUS_WAKEUP) - pci_set_power_state(to_pci_dev(hcd->self.sysdev), PCI_D3hot); } +EXPORT_SYMBOL_GPL(xhci_shutdown); #ifdef CONFIG_PM static void xhci_save_registers(struct xhci_hcd *xhci) diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index cbc91536e512..db1af99d53bd 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -2022,6 +2022,7 @@ int xhci_start(struct xhci_hcd *xhci); int xhci_reset(struct xhci_hcd *xhci); int xhci_run(struct usb_hcd *hcd); int xhci_gen_setup(struct usb_hcd *hcd, xhci_get_quirks_t get_quirks); +void xhci_shutdown(struct usb_hcd *hcd); void xhci_init_driver(struct hc_driver *drv, const struct xhci_driver_overrides *over); int xhci_disable_slot(struct xhci_hcd *xhci, u32 slot_id); |