Merge remote-tracking branch 'sound/for-next'

[karo-tx-linux.git] / drivers / usb / host / xhci.c

diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index 1e36dbb4836693dbe5ac90b8231361f82645a7b1..6e0d886bcce52c19361d321cf68c0abacf5b054c 100644 (file)
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -730,6 +730,9 @@ void xhci_shutdown(struct usb_hcd *hcd)
 
        spin_lock_irq(&xhci->lock);
        xhci_halt(xhci);
+       /* Workaround for spurious wakeups at shutdown with HSW */
+       if (xhci->quirks & XHCI_SPURIOUS_WAKEUP)
+               xhci_reset(xhci);
        spin_unlock_irq(&xhci->lock);
 
        xhci_cleanup_msix(xhci);
@@ -737,6 +740,10 @@ void xhci_shutdown(struct usb_hcd *hcd)
        xhci_dbg_trace(xhci, trace_xhci_dbg_init,
                        "xhci_shutdown completed - status = %x",
                        xhci_readl(xhci, &xhci->op_regs->status));
+
+       /* Yet another workaround for spurious wakeups at shutdown with HSW */
+       if (xhci->quirks & XHCI_SPURIOUS_WAKEUP)
+               pci_set_power_state(to_pci_dev(hcd->self.controller), PCI_D3hot);
 }
 
 #ifdef CONFIG_PM
@@ -839,6 +846,7 @@ static void xhci_clear_command_ring(struct xhci_hcd *xhci)
 int xhci_suspend(struct xhci_hcd *xhci)
 {
        int                     rc = 0;
+       unsigned int            delay = XHCI_MAX_HALT_USEC;
        struct usb_hcd          *hcd = xhci_to_hcd(xhci);
        u32                     command;
 
@@ -861,8 +869,12 @@ int xhci_suspend(struct xhci_hcd *xhci)
        command = xhci_readl(xhci, &xhci->op_regs->command);
        command &= ~CMD_RUN;
        xhci_writel(xhci, command, &xhci->op_regs->command);
+
+       /* Some chips from Fresco Logic need an extraordinary delay */
+       delay *= (xhci->quirks & XHCI_SLOW_SUSPEND) ? 10 : 1;
+
        if (xhci_handshake(xhci, &xhci->op_regs->status,
-                     STS_HALT, STS_HALT, XHCI_MAX_HALT_USEC)) {
+                     STS_HALT, STS_HALT, delay)) {
                xhci_warn(xhci, "WARN: xHC CMD_RUN timeout\n");
                spin_unlock_irq(&xhci->lock);
                return -ETIMEDOUT;