* Grygorii Strashko <[email protected]> [161212 11:38]: > Now races can happen between interrupt handler execution and PM runtime in > error handling code path in probe and in dwc3_omap_remove() which will lead > to system crash: > > in probe: > ... > err1: > pm_runtime_put_sync(dev); > ^^ PM runtime can race with IRQ handler when deferred probing happening > due to extcon > pm_runtime_disable(dev); > > return ret; > > in dwc3_omap_remove: > ... > dwc3_omap_disable_irqs(omap); > ^^ IRQs are disabled in HW, but handler may still run > of_platform_depopulate(omap->dev); > pm_runtime_put_sync(&pdev->dev); > ^^ PM runtime can race with IRQ handler > pm_runtime_disable(&pdev->dev); > > return 0; > > So, OMAP DWC3 IRQ need to be disabled before calling > pm_runtime_put() in probe and in dwc3_omap_remove().
Acked-by: Tony Lindgren <[email protected]> -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
