Hi Martin,
On 6/29/2020 10:03 PM, Martin Blumenstingl wrote:
> Call dwc2_debugfs_exit() when usb_add_gadget_udc() has failed. This
> ensure that the debugfs entries created by dwc2_debugfs_init() are
> cleaned up in the error path.
>
> Fixes: 207324a321a866 ("usb: dwc2: Postponed gadget registration to the udc class driver")
> Signed-off-by: Martin Blumenstingl <martin.blumenstingl@xxxxxxxxxxxxxx>
> ---
> This patch is compile-tested only. I found this while trying to
> understand the latest changes to dwc2/platform.c.
>
>
> drivers/usb/dwc2/platform.c | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/usb/dwc2/platform.c b/drivers/usb/dwc2/platform.c
> index c347d93eae64..02b6da7e21d7 100644
> --- a/drivers/usb/dwc2/platform.c
> +++ b/drivers/usb/dwc2/platform.c
> @@ -582,12 +582,14 @@ static int dwc2_driver_probe(struct platform_device *dev)
> retval = usb_add_gadget_udc(hsotg->dev, &hsotg->gadget);
> if (retval) {
> dwc2_hsotg_remove(hsotg);
> - goto error_init;
> + goto error_debugfs;
> }
> }
> #endif /* CONFIG_USB_DWC2_PERIPHERAL || CONFIG_USB_DWC2_DUAL_ROLE */
> return 0;
>
> +error_debugfs:
> + dwc2_debugfs_exit(hsotg);
> error_init:
> if (hsotg->params.activate_stm_id_vb_detection)
> regulator_disable(hsotg->usb33d);
>
I'm Ok with this fix. One more thing. I missed to remove hcd also in
fail case. Could you please add dwc2_hcd_remove() call after
dwc2_debugfs_exit(hsotg) and submit as patch:
+error_debugfs:
+ dwc2_debugfs_exit(hsotg);
+ if (hsotg->hcd_enabled)
+ dwc2_hcd_remove(hsotg);
error_init:
Thanks,
Minas
