From 7bb4fdc602c6cc763185d88f58ed75c84eb32158 Mon Sep 17 00:00:00 2001 From: Marc Kleine-Budde Date: Mon, 10 Oct 2011 18:38:09 +0200 Subject: [PATCH] USB: ci13xxx_udc: make suspend and resume in gadget driver optional Some gadget drivers don't implement suspend and/or resume functions. Instead of changing the gadget drivers, make suspend and resume in ci13xxx_udc (following other udc drivers) optional. Tested-by: Pavankumar Kondeti Signed-off-by: Marc Kleine-Budde Signed-off-by: Felipe Balbi --- drivers/usb/gadget/ci13xxx_udc.c | 11 ++++------- 1 file changed, 4 insertions(+), 7 deletions(-) diff --git a/drivers/usb/gadget/ci13xxx_udc.c b/drivers/usb/gadget/ci13xxx_udc.c index 9a0c3979ff43..9db7e7667c2b 100644 --- a/drivers/usb/gadget/ci13xxx_udc.c +++ b/drivers/usb/gadget/ci13xxx_udc.c @@ -2563,9 +2563,7 @@ static int ci13xxx_start(struct usb_gadget_driver *driver, if (driver == NULL || bind == NULL || driver->setup == NULL || - driver->disconnect == NULL || - driver->suspend == NULL || - driver->resume == NULL) + driver->disconnect == NULL) return -EINVAL; else if (udc == NULL) return -ENODEV; @@ -2693,8 +2691,6 @@ static int ci13xxx_stop(struct usb_gadget_driver *driver) driver->unbind == NULL || driver->setup == NULL || driver->disconnect == NULL || - driver->suspend == NULL || - driver->resume == NULL || driver != udc->driver) return -EINVAL; @@ -2793,7 +2789,7 @@ static irqreturn_t udc_irq(void) isr_statistics.pci++; udc->gadget.speed = hw_port_is_high_speed() ? USB_SPEED_HIGH : USB_SPEED_FULL; - if (udc->suspended) { + if (udc->suspended && udc->driver->resume) { spin_unlock(udc->lock); udc->driver->resume(&udc->gadget); spin_lock(udc->lock); @@ -2807,7 +2803,8 @@ static irqreturn_t udc_irq(void) isr_tr_complete_handler(udc); } if (USBi_SLI & intr) { - if (udc->gadget.speed != USB_SPEED_UNKNOWN) { + if (udc->gadget.speed != USB_SPEED_UNKNOWN && + udc->driver->suspend) { udc->suspended = 1; spin_unlock(udc->lock); udc->driver->suspend(&udc->gadget); -- 2.20.1