diff options
Diffstat (limited to 'drivers/usb/gadget')
| -rw-r--r-- | drivers/usb/gadget/mv_udc.h | 3 | ||||
| -rw-r--r-- | drivers/usb/gadget/mv_udc_core.c | 8 |
2 files changed, 10 insertions, 1 deletions
diff --git a/drivers/usb/gadget/mv_udc.h b/drivers/usb/gadget/mv_udc.h index b2c36ee3c82..3d840448461 100644 --- a/drivers/usb/gadget/mv_udc.h +++ b/drivers/usb/gadget/mv_udc.h @@ -211,7 +211,8 @@ struct mv_udc { softconnected:1, force_fs:1, clock_gating:1, - active:1; + active:1, + stopped:1; /* stop bit is setted */ struct work_struct vbus_work; struct workqueue_struct *qwork; diff --git a/drivers/usb/gadget/mv_udc_core.c b/drivers/usb/gadget/mv_udc_core.c index 647cc3ab170..6ff0b6b238a 100644 --- a/drivers/usb/gadget/mv_udc_core.c +++ b/drivers/usb/gadget/mv_udc_core.c @@ -1056,6 +1056,8 @@ static void udc_stop(struct mv_udc *udc) USBINTR_PORT_CHANGE_DETECT_EN | USBINTR_RESET_EN); writel(tmp, &udc->op_regs->usbintr); + udc->stopped = 1; + /* Reset the Run the bit in the command register to stop VUSB */ tmp = readl(&udc->op_regs->usbcmd); tmp &= ~USBCMD_RUN_STOP; @@ -1072,6 +1074,8 @@ static void udc_start(struct mv_udc *udc) /* Enable interrupts */ writel(usbintr, &udc->op_regs->usbintr); + udc->stopped = 0; + /* Set the Run bit in the command register */ writel(USBCMD_RUN_STOP, &udc->op_regs->usbcmd); } @@ -2040,6 +2044,10 @@ static irqreturn_t mv_udc_irq(int irq, void *dev) struct mv_udc *udc = (struct mv_udc *)dev; u32 status, intr; + /* Disable ISR when stopped bit is set */ + if (udc->stopped) + return IRQ_NONE; + spin_lock(&udc->lock); status = readl(&udc->op_regs->usbsts); |