Re: [PATCH] usb: gadget: function: printer: Fix usb function descriptors leak

From: Greg KH
Date: Wed Oct 14 2020 - 04:12:14 EST


On Wed, Oct 14, 2020 at 03:55:23PM +0800, Zqiang wrote:
> If an error occurs after call 'usb_assign_descriptors' func, the
> 'usb_free_all_descriptors' need to be call to release memory space
> occupied by function descriptors.
>
> Signed-off-by: Zqiang <qiang.zhang@xxxxxxxxxxxxx>

Please use your ful name for the From: and signed-off-by lines, as the
documentation states is required. If this is your full name, then why
does it not match the name on your email address from your employer?

> ---
> drivers/usb/gadget/function/f_printer.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/drivers/usb/gadget/function/f_printer.c b/drivers/usb/gadget/function/f_printer.c
> index 64a4112068fc..2f1eb2e81d30 100644
> --- a/drivers/usb/gadget/function/f_printer.c
> +++ b/drivers/usb/gadget/function/f_printer.c
> @@ -1162,6 +1162,7 @@ static int printer_func_bind(struct usb_configuration *c,
> printer_req_free(dev->in_ep, req);
> }
>
> + usb_free_all_descriptors(f);

What commit caused this problem?

thanks,

greg k-h