linux-kernel - Re: [PATCH 1/3] rkisp1: Get rid of unused variable warning

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Date:   Thu, 02 Apr 2020 13:31:27 -0300
From:   Ezequiel Garcia <ezequiel@...labora.com>
To:     Robin Murphy <robin.murphy@....com>, linux-media@...r.kernel.org,
        linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:     Hans Verkuil <hverkuil@...all.nl>, kernel@...labora.com
Subject: Re: [PATCH 1/3] rkisp1: Get rid of unused variable warning

On Thu, 2020-04-02 at 10:47 +0100, Robin Murphy wrote:
> On 2020-04-01 10:37 pm, Ezequiel Garcia wrote:
> > If CONFIG_OF is not selected, the compiler will complain:
> > 
> > drivers/staging/media/rkisp1/rkisp1-dev.c: In function ‘rkisp1_probe’:
> > drivers/staging/media/rkisp1/rkisp1-dev.c:457:22: warning: unused variable ‘node’ [-Wunused-variable]
> >    457 |  struct device_node *node = pdev->dev.of_node;
> > 
> > Rework the code slightly and make the compiler happy.
> > 
> > Signed-off-by: Ezequiel Garcia <ezequiel@...labora.com>
> > ---
> >   drivers/staging/media/rkisp1/rkisp1-dev.c | 3 +--
> >   1 file changed, 1 insertion(+), 2 deletions(-)
> > 
> > diff --git a/drivers/staging/media/rkisp1/rkisp1-dev.c b/drivers/staging/media/rkisp1/rkisp1-dev.c
> > index b1b3c058e957..5e7e797aad71 100644
> > --- a/drivers/staging/media/rkisp1/rkisp1-dev.c
> > +++ b/drivers/staging/media/rkisp1/rkisp1-dev.c
> > @@ -454,7 +454,6 @@ static void rkisp1_debug_init(struct rkisp1_device *rkisp1)
> >   
> >   static int rkisp1_probe(struct platform_device *pdev)
> >   {
> > -	struct device_node *node = pdev->dev.of_node;
> >   	const struct rkisp1_match_data *clk_data;
> >   	const struct of_device_id *match;
> >   	struct device *dev = &pdev->dev;
> > @@ -463,7 +462,7 @@ static int rkisp1_probe(struct platform_device *pdev)
> >   	unsigned int i;
> >   	int ret, irq;
> >   
> > -	match = of_match_node(rkisp1_of_match, node);
> > +	match = of_match_node(rkisp1_of_match, pdev->dev.of_node);
> 
> FWIW you could clean up "match" too by using of_device_get_match_data().
> 

Ah, that's nicer.

Thanks,
Ezequiel