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| author | Yinbo Zhu <zhuyinbo@loongson.cn> | 2023-12-28 08:11:13 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-01-04 15:58:12 +0100 |
| commit | 6d6887c42e946f43bed2e64571a40c8476a1e4a9 (patch) | |
| tree | 1f0957bbfe1aab5200226981717470850aa7d982 | |
| parent | usb: dwc3: core: set force_gen1 bit in USB31 devices if max speed is SS (diff) | |
| download | linux-6d6887c42e946f43bed2e64571a40c8476a1e4a9.tar.xz linux-6d6887c42e946f43bed2e64571a40c8476a1e4a9.zip | |
usb: xhci-plat: fix usb disconnect issue after s4
The xhci retaining bogus hardware states cause usb disconnect devices
connected before hibernation(s4) and refer to the commit 'f3d478858be
("usb: ohci-platform: fix usb disconnect issue after s4")' which set
flag "hibernated" as true when resume-from-hibernation and that the
drivers will reset the hardware to get rid of any existing state and
make sure resume from hibernation re-enumerates everything for xhci.
Signed-off-by: Yinbo Zhu <zhuyinbo@loongson.cn>
Link: https://lore.kernel.org/r/20231228071113.1719-1-zhuyinbo@loongson.cn
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/usb/host/xhci-plat.c | 23 |
1 files changed, 19 insertions, 4 deletions
diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c index e46175c38570..f04fde19f551 100644 --- a/drivers/usb/host/xhci-plat.c +++ b/drivers/usb/host/xhci-plat.c @@ -436,7 +436,7 @@ void xhci_plat_remove(struct platform_device *dev) } EXPORT_SYMBOL_GPL(xhci_plat_remove); -static int __maybe_unused xhci_plat_suspend(struct device *dev) +static int xhci_plat_suspend(struct device *dev) { struct usb_hcd *hcd = dev_get_drvdata(dev); struct xhci_hcd *xhci = hcd_to_xhci(hcd); @@ -464,7 +464,7 @@ static int __maybe_unused xhci_plat_suspend(struct device *dev) return 0; } -static int __maybe_unused xhci_plat_resume(struct device *dev) +static int xhci_plat_resume_common(struct device *dev, struct pm_message pmsg) { struct usb_hcd *hcd = dev_get_drvdata(dev); struct xhci_hcd *xhci = hcd_to_xhci(hcd); @@ -486,7 +486,7 @@ static int __maybe_unused xhci_plat_resume(struct device *dev) if (ret) goto disable_clks; - ret = xhci_resume(xhci, PMSG_RESUME); + ret = xhci_resume(xhci, pmsg); if (ret) goto disable_clks; @@ -505,6 +505,16 @@ disable_clks: return ret; } +static int xhci_plat_resume(struct device *dev) +{ + return xhci_plat_resume_common(dev, PMSG_RESUME); +} + +static int xhci_plat_restore(struct device *dev) +{ + return xhci_plat_resume_common(dev, PMSG_RESTORE); +} + static int __maybe_unused xhci_plat_runtime_suspend(struct device *dev) { struct usb_hcd *hcd = dev_get_drvdata(dev); @@ -527,7 +537,12 @@ static int __maybe_unused xhci_plat_runtime_resume(struct device *dev) } const struct dev_pm_ops xhci_plat_pm_ops = { - SET_SYSTEM_SLEEP_PM_OPS(xhci_plat_suspend, xhci_plat_resume) + .suspend = pm_sleep_ptr(xhci_plat_suspend), + .resume = pm_sleep_ptr(xhci_plat_resume), + .freeze = pm_sleep_ptr(xhci_plat_suspend), + .thaw = pm_sleep_ptr(xhci_plat_resume), + .poweroff = pm_sleep_ptr(xhci_plat_suspend), + .restore = pm_sleep_ptr(xhci_plat_restore), SET_RUNTIME_PM_OPS(xhci_plat_runtime_suspend, xhci_plat_runtime_resume, |