On 21.9.2023 4.58, Yinbo Zhu wrote:
Friendly ping ? 在 2023/8/9 下午5:58, Yinbo Zhu 写道: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@xxxxxxxxxxx> --- Change in v2: 1. Add CONFIG_PM_SLEEP in xhci_plat_pm_ops that for fix compile issue when CONFIG_PM not enable. drivers/usb/host/xhci-plat.c | 24 ++++++++++++++++++++---- 1 file changed, 20 insertions(+), 4 deletions(-) diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c index 28218c8f1837..112468fdcca2 100644 --- a/drivers/usb/host/xhci-plat.c +++ b/drivers/usb/host/xhci-plat.c @@ -451,7 +451,7 @@ static int __maybe_unused xhci_plat_suspend(struct device *dev) return 0; } -static int __maybe_unused xhci_plat_resume(struct device *dev) +static int __maybe_unused 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); @@ -466,7 +466,7 @@ static int __maybe_unused xhci_plat_resume(struct device *dev) if (ret) return ret; - ret = xhci_resume(xhci, PMSG_RESUME); + ret = xhci_resume(xhci, pmsg); if (ret) return ret; @@ -477,6 +477,16 @@ static int __maybe_unused xhci_plat_resume(struct device *dev) return 0; } +static int __maybe_unused xhci_plat_resume(struct device *dev) +{ + return xhci_plat_resume_common(dev, PMSG_RESUME); +} + +static int __maybe_unused 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); @@ -499,8 +509,14 @@ 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) - +#ifdef CONFIG_PM_SLEEP + .suspend = xhci_plat_suspend, + .resume = xhci_plat_resume, + .freeze = xhci_plat_suspend, + .thaw = xhci_plat_resume, + .poweroff = xhci_plat_suspend, + .restore = xhci_plat_restore, +#endif
How about using pm_ptr() and pm_sleep_ptr() macros instead of the #ifdef CONFIG_PM_SLEEP? should be able to get rif of the __maybe_unused flags as well. Thanks -Mathias
