On Fri, 22 Mar 2019, Tony Lindgren wrote:
> If ohci-platform is runtime suspended, we can currently get an "imprecise
> external abort" on reboot with ohci-platform loaded when PM runtime
> is implemented for the SoC.
>
> Let's fix this by adding PM runtime support to usb_hcd_platform_shutdown.
>
> Signed-off-by: Tony Lindgren <tony@xxxxxxxxxxx>
> ---
> drivers/usb/core/hcd.c | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c
> --- a/drivers/usb/core/hcd.c
> +++ b/drivers/usb/core/hcd.c
> @@ -3017,6 +3017,9 @@ usb_hcd_platform_shutdown(struct platform_device *dev)
> {
> struct usb_hcd *hcd = platform_get_drvdata(dev);
>
> + /* No need for pm_runtime_put(), we're shutting down */
> + pm_runtime_get_sync(&dev->dev);
> +
> if (hcd->driver->shutdown)
> hcd->driver->shutdown(hcd);
> }
Acked-by: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>
