linux-kernel - Re: [PATCH 3/8] drivers/media/video/hdpvr: introduce missing kfree

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Date:	Tue, 02 Feb 2010 13:19:15 -0200
From:	Mauro Carvalho Chehab <mchehab@...radead.org>
To:	Janne Grunau <j@...nau.net>
CC:	Julia Lawall <julia@...u.dk>, linux-media@...r.kernel.org,
	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: Re: [PATCH 3/8] drivers/media/video/hdpvr: introduce missing kfree

Hi Janne,

Janne Grunau wrote:
> On Fri, Sep 11, 2009 at 06:21:35PM +0200, Julia Lawall wrote:
>> Error handling code following a kzalloc should free the allocated data.
> 
> Thanks for the report. I'll commit a different patch which adds the buffer
> to the buffer list as soon it is allocated. The hdpvr_free_buffers() in the
> error handling code will clean it up then. See below:

Any news about this subject? The current upstream code still misses the change bellow

> 
> diff --git a/linux/drivers/media/video/hdpvr/hdpvr-video.c b/linux/drivers/media/video/hdpvr/hdpvr-video.c
> --- a/linux/drivers/media/video/hdpvr/hdpvr-video.c
> +++ b/linux/drivers/media/video/hdpvr/hdpvr-video.c
> @@ -134,6 +134,8 @@
>                         v4l2_err(&dev->v4l2_dev, "cannot allocate buffer\n");
>                         goto exit;
>                 }
> +               list_add_tail(&buf->buff_list, &dev->free_buff_list);
> +
>                 buf->dev = dev;
> 
>                 urb = usb_alloc_urb(0, GFP_KERNEL);
> @@ -158,7 +160,6 @@
>                                   hdpvr_read_bulk_callback, buf);
> 
>                 buf->status = BUFSTAT_AVAILABLE;
> -               list_add_tail(&buf->buff_list, &dev->free_buff_list);
>         }
>         return 0;
>  exit:
> --
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-- 

Cheers,
Mauro
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