From 811ae81320da53a5670c36970cefacca8519f90e Mon Sep 17 00:00:00 2001 From: Kai-Heng Feng Date: Fri, 10 Dec 2021 16:17:34 +0200 Subject: xhci: Remove CONFIG_USB_DEFAULT_PERSIST to prevent xHCI from runtime suspending When the xHCI is quirked with XHCI_RESET_ON_RESUME, runtime resume routine also resets the controller. This is bad for USB drivers without reset_resume callback, because there's no subsequent call of usb_dev_complete() -> usb_resume_complete() to force rebinding the driver to the device. For instance, btusb device stops working after xHCI controller is runtime resumed, if the controlled is quirked with XHCI_RESET_ON_RESUME. So always take XHCI_RESET_ON_RESUME into account to solve the issue. Cc: Signed-off-by: Kai-Heng Feng Signed-off-by: Mathias Nyman Link: https://lore.kernel.org/r/20211210141735.1384209-2-mathias.nyman@linux.intel.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci.c | 4 ---- 1 file changed, 4 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index 902f410874e8..af92a9f8ed67 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -3934,7 +3934,6 @@ static void xhci_free_dev(struct usb_hcd *hcd, struct usb_device *udev) struct xhci_slot_ctx *slot_ctx; int i, ret; -#ifndef CONFIG_USB_DEFAULT_PERSIST /* * We called pm_runtime_get_noresume when the device was attached. * Decrement the counter here to allow controller to runtime suspend @@ -3942,7 +3941,6 @@ static void xhci_free_dev(struct usb_hcd *hcd, struct usb_device *udev) */ if (xhci->quirks & XHCI_RESET_ON_RESUME) pm_runtime_put_noidle(hcd->self.controller); -#endif ret = xhci_check_args(hcd, udev, NULL, 0, true, __func__); /* If the host is halted due to driver unload, we still need to free the @@ -4094,14 +4092,12 @@ int xhci_alloc_dev(struct usb_hcd *hcd, struct usb_device *udev) xhci_debugfs_create_slot(xhci, slot_id); -#ifndef CONFIG_USB_DEFAULT_PERSIST /* * If resetting upon resume, we can't put the controller into runtime * suspend if there is a device attached. */ if (xhci->quirks & XHCI_RESET_ON_RESUME) pm_runtime_get_noresume(hcd->self.controller); -#endif /* Is this a LS or FS device under a HS hub? */ /* Hub or peripherial? */ -- cgit