Don't register interrupt handler before usb gadget is correctly initialized. For some embedded platforms which don't have a usb-phy, it crashes the driver because an interrupt is emitted with non-initialized hardware. According to devm_request_irq documentation, an interrupt can be emitted at any time once the interrupt is registered, so we have to care about driver and hardware initialization. Signed-off-by: Romain Perier <romain.perier@xxxxxxxxx> --- Changes for v2: fix typos in commit log drivers/usb/dwc2/platform.c | 17 +++++++++-------- 1 file changed, 9 insertions(+), 8 deletions(-) diff --git a/drivers/usb/dwc2/platform.c b/drivers/usb/dwc2/platform.c index ae095f0..b26cf8c 100644 --- a/drivers/usb/dwc2/platform.c +++ b/drivers/usb/dwc2/platform.c @@ -196,14 +196,6 @@ static int dwc2_driver_probe(struct platform_device *dev) return irq; } - dev_dbg(hsotg->dev, "registering common handler for irq%d\n", - irq); - retval = devm_request_irq(hsotg->dev, irq, - dwc2_handle_common_intr, IRQF_SHARED, - dev_name(hsotg->dev), hsotg); - if (retval) - return retval; - res = platform_get_resource(dev, IORESOURCE_MEM, 0); hsotg->regs = devm_ioremap_resource(&dev->dev, res); if (IS_ERR(hsotg->regs)) @@ -237,6 +229,15 @@ static int dwc2_driver_probe(struct platform_device *dev) retval = dwc2_gadget_init(hsotg, irq); if (retval) return retval; + + dev_dbg(hsotg->dev, "registering common handler for irq%d\n", + irq); + retval = devm_request_irq(hsotg->dev, irq, + dwc2_handle_common_intr, IRQF_SHARED, + dev_name(hsotg->dev), hsotg); + if (retval) + return retval; + retval = dwc2_hcd_init(hsotg, irq, params); if (retval) return retval; -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
