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Revert "xhci: turn off port power in shutdown" 

This reverts commit 83810f84ec.

Turning off port power in shutdown did cause issues such as a laptop not
proprly powering off, and some specific usb devies failing to enumerate the
subsequent boot after a warm reset.

So revert this.

Fixes: 83810f84ec ("xhci: turn off port power in shutdown")
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20220825150840.132216-4-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Mathias Nyman 2022-08-25 18:08:40 +03:00 committed by Greg Kroah-Hartman
parent 33e321586e
commit 8531aa1659
3 changed files with 3 additions and 16 deletions
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2
drivers/usb/host/xhci-hub.c
View File

@ -652,7 +652,7 @@ struct xhci_hub *xhci_get_rhub(struct usb_hcd *hcd)
* It will release and re-aquire the lock while calling ACPI
* method.
*/
void xhci_set_port_power(struct xhci_hcd *xhci, struct usb_hcd *hcd,
static void xhci_set_port_power(struct xhci_hcd *xhci, struct usb_hcd *hcd,
u16 index, bool on, unsigned long *flags)
__must_hold(&xhci->lock)
{

15
drivers/usb/host/xhci.c
View File

@ -793,8 +793,6 @@ static void xhci_stop(struct usb_hcd *hcd)
void xhci_shutdown(struct usb_hcd *hcd)
{
struct xhci_hcd *xhci = hcd_to_xhci(hcd);
unsigned long flags;
int i;
if (xhci->quirks & XHCI_SPURIOUS_REBOOT)
usb_disable_xhci_ports(to_pci_dev(hcd->self.sysdev));
@ -810,21 +808,12 @@ void xhci_shutdown(struct usb_hcd *hcd)
del_timer_sync(&xhci->shared_hcd->rh_timer);
}
spin_lock_irqsave(&xhci->lock, flags);
spin_lock_irq(&xhci->lock);
xhci_halt(xhci);
/* Power off USB2 ports*/
for (i = 0; i < xhci->usb2_rhub.num_ports; i++)
xhci_set_port_power(xhci, xhci->main_hcd, i, false, &flags);
/* Power off USB3 ports*/
for (i = 0; i < xhci->usb3_rhub.num_ports; i++)
xhci_set_port_power(xhci, xhci->shared_hcd, i, false, &flags);
/* Workaround for spurious wakeups at shutdown with HSW */
if (xhci->quirks & XHCI_SPURIOUS_WAKEUP)
xhci_reset(xhci, XHCI_RESET_SHORT_USEC);
spin_unlock_irqrestore(&xhci->lock, flags);
spin_unlock_irq(&xhci->lock);
xhci_cleanup_msix(xhci);

2
drivers/usb/host/xhci.h
View File

@ -2196,8 +2196,6 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, u16 wIndex,
int xhci_hub_status_data(struct usb_hcd *hcd, char *buf);
int xhci_find_raw_port_number(struct usb_hcd *hcd, int port1);
struct xhci_hub *xhci_get_rhub(struct usb_hcd *hcd);
void xhci_set_port_power(struct xhci_hcd *xhci, struct usb_hcd *hcd, u16 index,
bool on, unsigned long *flags);
void xhci_hc_died(struct xhci_hcd *xhci);