From 15be105b4a18c461b95fa683907f6da6deae1b75 Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Wed, 11 Jul 2012 11:21:17 -0400 Subject: [PATCH] USB: EHCI: remove unneeded suspend/resume code This patch (as1566) removes the code in ehci-hcd's resume routines which tries to restart or cancel any transfers left active while the root hub or controller was asleep. This code isn't necessary, because all URBs are terminated before the root hub is suspended. Signed-off-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ehci-hcd.c | 7 ------- drivers/usb/host/ehci-hub.c | 13 +------------ 2 files changed, 1 insertion(+), 19 deletions(-) diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c index 8727f4e..ab7306d 100644 --- a/drivers/usb/host/ehci-hcd.c +++ b/drivers/usb/host/ehci-hcd.c @@ -1312,13 +1312,6 @@ static int __maybe_unused ehci_resume(struct usb_hcd *hcd, bool hibernated) (void) ehci_halt(ehci); (void) ehci_reset(ehci); - /* emptying the schedule aborts any urbs */ - spin_lock_irq(&ehci->lock); - if (ehci->reclaim) - end_unlink_async(ehci); - ehci_work(ehci); - spin_unlock_irq(&ehci->lock); - ehci_writel(ehci, ehci->command, &ehci->regs->command); ehci_writel(ehci, FLAG_CF, &ehci->regs->configured_flag); ehci_readl(ehci, &ehci->regs->command); /* unblock posted writes */ diff --git a/drivers/usb/host/ehci-hub.c b/drivers/usb/host/ehci-hub.c index b3e2d66..1daaa96 100644 --- a/drivers/usb/host/ehci-hub.c +++ b/drivers/usb/host/ehci-hub.c @@ -424,23 +424,12 @@ static int ehci_bus_resume (struct usb_hcd *hcd) ehci_vdbg (ehci, "resumed port %d\n", i + 1); } } - (void) ehci_readl(ehci, &ehci->regs->command); - - /* maybe re-activate the schedule(s) */ - temp = 0; - if (ehci->async->qh_next.qh) - temp |= CMD_ASE; - if (ehci->periodic_sched) - temp |= CMD_PSE; - if (temp) { - ehci->command |= temp; - ehci_writel(ehci, ehci->command, &ehci->regs->command); - } ehci->next_statechange = jiffies + msecs_to_jiffies(5); /* Now we can safely re-enable irqs */ ehci_writel(ehci, INTR_MASK, &ehci->regs->intr_enable); + (void) ehci_readl(ehci, &ehci->regs->intr_enable); spin_unlock_irq (&ehci->lock); ehci_handover_companion_ports(ehci); -- 2.7.4