linux-kernel - Re: [PATCH] usb: musb: musb

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Date:	Sat, 2 Oct 2010 15:54:38 +0800
From:	Ming Lei <tom.leiming@...il.com>
To:	Rahul Ruikar <rahul.ruikar@...il.com>
Cc:	Felipe Balbi <balbi@...com>, Greg Kroah-Hartman <gregkh@...e.de>,
	Sergei Shtylyov <sshtylyov@...mvista.com>,
	Mike Frysinger <vapier@...too.org>, linux-usb@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] usb: musb: musb_gadget: Fix error path

2010/10/2 Rahul Ruikar <rahul.ruikar@...il.com>:
> In function musb_gadget_setup()
> call put_device() when device_register() fails.
>
> Signed-off-by: Rahul Ruikar <rahul.ruikar@...il.com>
> ---
>  drivers/usb/musb/musb_gadget.c |    4 +++-
>  1 files changed, 3 insertions(+), 1 deletions(-)
>
> diff --git a/drivers/usb/musb/musb_gadget.c b/drivers/usb/musb/musb_gadget.c
> index d065e23..9fdd852 100644
> --- a/drivers/usb/musb/musb_gadget.c
> +++ b/drivers/usb/musb/musb_gadget.c
> @@ -1676,8 +1676,10 @@ int __init musb_gadget_setup(struct musb *musb)
>        musb_platform_try_idle(musb, 0);
>
>        status = device_register(&musb->g.dev);
> -       if (status != 0)
> +       if (status != 0) {
> +               put_device(&musb->g.dev);

This doe make sense, otherwise device_private may be leaked.

>                the_gadget = NULL;
> +       }
>        return status;
>  }
>
> --
> 1.7.2.3
>
>

Acked-by: Ming Lei <tom.leiming@...il.com>

-- 
Lei Ming
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