6.6-stable review patch. If anyone has any objections, please let me know.
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From: Yinbo Zhu zhuyinbo@loongson.cn
[ Upstream commit 6d6887c42e946f43bed2e64571a40c8476a1e4a9 ]
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 Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/usb/host/xhci-plat.c | 23 +++++++++++++++++++---- 1 file changed, 19 insertions(+), 4 deletions(-)
diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c index 732cdeb73920..f0853c4478f5 100644 --- a/drivers/usb/host/xhci-plat.c +++ b/drivers/usb/host/xhci-plat.c @@ -433,7 +433,7 @@ 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); @@ -461,7 +461,7 @@ 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); @@ -483,7 +483,7 @@ 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;
@@ -502,6 +502,16 @@ static int __maybe_unused xhci_plat_resume(struct device *dev) 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); @@ -524,7 +534,12 @@ 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,