From b5fb454f69642f9d933b327b185a2ba06dd0945c Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Wed, 20 Aug 2008 17:22:05 -0400 Subject: USB: automatically enable RHSC interrupts This patch (as1069c) changes the way OHCI root-hub status-change interrupts are enabled. Currently a special HCD method, hub_irq_enable(), is called when the hub driver is finished using a root hub. This approach turns out to be subject to races, resulting in unnecessary polling. The patch does away with the method entirely. Instead, the driver automatically enables the RHSC interrupt when no more status changes are present. This scheme is safe with controllers using level-triggered semantics for their interrupt flags. Signed-off-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ohci-omap.c | 1 - 1 file changed, 1 deletion(-) (limited to 'drivers/usb/host/ohci-omap.c') diff --git a/drivers/usb/host/ohci-omap.c b/drivers/usb/host/ohci-omap.c index 3d532b709670..1eb64d08b60a 100644 --- a/drivers/usb/host/ohci-omap.c +++ b/drivers/usb/host/ohci-omap.c @@ -470,7 +470,6 @@ static const struct hc_driver ohci_omap_hc_driver = { */ .hub_status_data = ohci_hub_status_data, .hub_control = ohci_hub_control, - .hub_irq_enable = ohci_rhsc_enable, #ifdef CONFIG_PM .bus_suspend = ohci_bus_suspend, .bus_resume = ohci_bus_resume, -- cgit v1.2.3 From c3df1a2685004bce97827bdbe7a304734009849b Mon Sep 17 00:00:00 2001 From: Russell King Date: Wed, 3 Sep 2008 23:59:23 +0100 Subject: [ARM] omap: fix build error in ohci-omap.c drivers/usb/host/ohci-omap.c: In function 'ohci_omap_init': drivers/usb/host/ohci-omap.c:228: error: 'start_hnp' undeclared (first use in this function) Signed-off-by: Russell King --- drivers/usb/host/ohci-omap.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/usb/host/ohci-omap.c') diff --git a/drivers/usb/host/ohci-omap.c b/drivers/usb/host/ohci-omap.c index 1eb64d08b60a..95b3ec89c126 100644 --- a/drivers/usb/host/ohci-omap.c +++ b/drivers/usb/host/ohci-omap.c @@ -208,7 +208,7 @@ static int ohci_omap_init(struct usb_hcd *hcd) if (cpu_is_omap16xx()) ocpi_enable(); -#ifdef CONFIG_ARCH_OMAP_OTG +#ifdef CONFIG_USB_OTG if (need_transceiver) { ohci->transceiver = otg_get_transceiver(); if (ohci->transceiver) { -- cgit v1.2.3