3.16.62-rc1 review patch. If anyone has any objections, please let me know.
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From: Mian Yousaf Kaukab yousaf.kaukab@intel.com
commit 11bece5e063ca567e631c6ea3b1611c10dbc3282 upstream.
Gadget must be informed about disconnection when pullup is removed.
Tested-by: Ricardo Ribalda Delgado ricardo.ribalda@gmail.com Signed-off-by: Mian Yousaf Kaukab yousaf.kaukab@intel.com Signed-off-by: Felipe Balbi balbi@ti.com [bwh: Backported to 3.16: adjust filename, context] Signed-off-by: Ben Hutchings ben@decadent.org.uk --- --- a/drivers/usb/gadget/net2280.c +++ b/drivers/usb/gadget/net2280.c @@ -139,6 +139,10 @@ static char *type_string (u8 bmAttribute #define valid_bit cpu_to_le32 (1 << VALID_BIT) #define dma_done_ie cpu_to_le32 (1 << DMA_DONE_INTERRUPT_ENABLE)
+static void stop_activity(struct net2280 *dev, + struct usb_gadget_driver *driver); +static void ep0_start(struct net2280 *dev); + /*-------------------------------------------------------------------------*/
static int @@ -1390,11 +1394,14 @@ static int net2280_pullup(struct usb_gad spin_lock_irqsave (&dev->lock, flags); tmp = readl (&dev->usb->usbctl); dev->softconnect = (is_on != 0); - if (is_on) - tmp |= (1 << USB_DETECT_ENABLE); - else - tmp &= ~(1 << USB_DETECT_ENABLE); - writel (tmp, &dev->usb->usbctl); + if (is_on) { + ep0_start(dev); + writel(tmp | BIT(USB_DETECT_ENABLE), &dev->usb->usbctl); + } else { + writel(tmp & ~BIT(USB_DETECT_ENABLE), &dev->usb->usbctl); + stop_activity(dev, dev->driver); + } + spin_unlock_irqrestore (&dev->lock, flags);
return 0;