linux-kernel - Re: [PATCH] media: davinci: vpbe: missing clk

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Message-ID: <CA+V-a8vk3Ct8wGCsqzr4Bj9ACw__E0wB1-HuYNfohV847d7ycA@mail.gmail.com>
Date:	Fri, 7 Nov 2014 12:08:59 +0000
From:	Prabhakar Lad <prabhakar.csengg@...il.com>
To:	Sudip Mukherjee <sudipm.mukherjee@...il.com>
Cc:	Mauro Carvalho Chehab <m.chehab@...sung.com>,
	linux-media <linux-media@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] media: davinci: vpbe: missing clk_put

Hi,

Thanks for the patch!

On Thu, Nov 6, 2014 at 1:04 PM, Sudip Mukherjee
<sudipm.mukherjee@...il.com> wrote:
> we are getting struct clk using clk_get before calling
> clk_prepare_enable. but if clk_prepare_enable fails, then we are
> jumping to fail_mutex_unlock where we are just unlocking the mutex,
> but we are not freeing the clock source.
> this patch just adds a call to clk_put before jumping to
> fail_mutex_unlock.
>
> Signed-off-by: Sudip Mukherjee <sudip@...torindia.org>

Acked-by: Lad, Prabhakar <prabhakar.csengg@...il.com>

Thanks,
--Prabhakar

> ---
>  drivers/media/platform/davinci/vpbe.c | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/drivers/media/platform/davinci/vpbe.c b/drivers/media/platform/davinci/vpbe.c
> index 49d2de0..e5df991 100644
> --- a/drivers/media/platform/davinci/vpbe.c
> +++ b/drivers/media/platform/davinci/vpbe.c
> @@ -625,6 +625,7 @@ static int vpbe_initialize(struct device *dev, struct vpbe_device *vpbe_dev)
>                 }
>                 if (clk_prepare_enable(vpbe_dev->dac_clk)) {
>                         ret =  -ENODEV;
> +                       clk_put(vpbe_dev->dac_clk);
>                         goto fail_mutex_unlock;
>                 }
>         }
> --
> 1.8.1.2
>
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