usb: dwc3: gadget: don't request IRQs in atomic
We cannot request an IRQ with spinlocks held as that would trigger a sleeping inside spinlock warning. Cc: <stable@vger.kernel.org> # v3.10 Reported-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Родитель
2b0c49530b
Коммит
b0d7ffd44b
|
@ -1508,6 +1508,15 @@ static int dwc3_gadget_start(struct usb_gadget *g,
|
|||
int irq;
|
||||
u32 reg;
|
||||
|
||||
irq = platform_get_irq(to_platform_device(dwc->dev), 0);
|
||||
ret = request_threaded_irq(irq, dwc3_interrupt, dwc3_thread_interrupt,
|
||||
IRQF_SHARED | IRQF_ONESHOT, "dwc3", dwc);
|
||||
if (ret) {
|
||||
dev_err(dwc->dev, "failed to request irq #%d --> %d\n",
|
||||
irq, ret);
|
||||
goto err0;
|
||||
}
|
||||
|
||||
spin_lock_irqsave(&dwc->lock, flags);
|
||||
|
||||
if (dwc->gadget_driver) {
|
||||
|
@ -1515,7 +1524,7 @@ static int dwc3_gadget_start(struct usb_gadget *g,
|
|||
dwc->gadget.name,
|
||||
dwc->gadget_driver->driver.name);
|
||||
ret = -EBUSY;
|
||||
goto err0;
|
||||
goto err1;
|
||||
}
|
||||
|
||||
dwc->gadget_driver = driver;
|
||||
|
@ -1551,42 +1560,38 @@ static int dwc3_gadget_start(struct usb_gadget *g,
|
|||
ret = __dwc3_gadget_ep_enable(dep, &dwc3_gadget_ep0_desc, NULL, false);
|
||||
if (ret) {
|
||||
dev_err(dwc->dev, "failed to enable %s\n", dep->name);
|
||||
goto err0;
|
||||
goto err2;
|
||||
}
|
||||
|
||||
dep = dwc->eps[1];
|
||||
ret = __dwc3_gadget_ep_enable(dep, &dwc3_gadget_ep0_desc, NULL, false);
|
||||
if (ret) {
|
||||
dev_err(dwc->dev, "failed to enable %s\n", dep->name);
|
||||
goto err1;
|
||||
goto err3;
|
||||
}
|
||||
|
||||
/* begin to receive SETUP packets */
|
||||
dwc->ep0state = EP0_SETUP_PHASE;
|
||||
dwc3_ep0_out_start(dwc);
|
||||
|
||||
irq = platform_get_irq(to_platform_device(dwc->dev), 0);
|
||||
ret = request_threaded_irq(irq, dwc3_interrupt, dwc3_thread_interrupt,
|
||||
IRQF_SHARED | IRQF_ONESHOT, "dwc3", dwc);
|
||||
if (ret) {
|
||||
dev_err(dwc->dev, "failed to request irq #%d --> %d\n",
|
||||
irq, ret);
|
||||
goto err1;
|
||||
}
|
||||
|
||||
dwc3_gadget_enable_irq(dwc);
|
||||
|
||||
spin_unlock_irqrestore(&dwc->lock, flags);
|
||||
|
||||
return 0;
|
||||
|
||||
err1:
|
||||
err3:
|
||||
__dwc3_gadget_ep_disable(dwc->eps[0]);
|
||||
|
||||
err0:
|
||||
err2:
|
||||
dwc->gadget_driver = NULL;
|
||||
|
||||
err1:
|
||||
spin_unlock_irqrestore(&dwc->lock, flags);
|
||||
|
||||
free_irq(irq, dwc);
|
||||
|
||||
err0:
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
@ -1600,9 +1605,6 @@ static int dwc3_gadget_stop(struct usb_gadget *g,
|
|||
spin_lock_irqsave(&dwc->lock, flags);
|
||||
|
||||
dwc3_gadget_disable_irq(dwc);
|
||||
irq = platform_get_irq(to_platform_device(dwc->dev), 0);
|
||||
free_irq(irq, dwc);
|
||||
|
||||
__dwc3_gadget_ep_disable(dwc->eps[0]);
|
||||
__dwc3_gadget_ep_disable(dwc->eps[1]);
|
||||
|
||||
|
@ -1610,6 +1612,9 @@ static int dwc3_gadget_stop(struct usb_gadget *g,
|
|||
|
||||
spin_unlock_irqrestore(&dwc->lock, flags);
|
||||
|
||||
irq = platform_get_irq(to_platform_device(dwc->dev), 0);
|
||||
free_irq(irq, dwc);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
|
Загрузка…
Ссылка в новой задаче