linux-kernel - Re: [PATCH] dma: fix returnvar.cocci warnings

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Message-ID: <CAHp75VdRN14EWUaTPzO45Z_mBzeQ=9sqzP3mMsMSQ2nXNi5QKg@mail.gmail.com>
Date:	Sun, 8 Nov 2015 23:15:32 +0200
From:	Andy Shevchenko <andy.shevchenko@...il.com>
To:	Julia Lawall <julia.lawall@...6.fr>
Cc:	Sinan Kaya <okaya@...eaurora.org>,
	Andy Gross <agross@...eaurora.org>, kbuild-all@...org,
	dmaengine <dmaengine@...r.kernel.org>, timur@...eaurora.org,
	cov@...eaurora.org, jcm@...hat.com, linux-arm-msm@...r.kernel.org,
	linux-arm Mailing List <linux-arm-kernel@...ts.infradead.org>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Vinod Koul <vinod.koul@...el.com>,
	Dan Williams <dan.j.williams@...el.com>,
	devicetree <devicetree@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] dma: fix returnvar.cocci warnings

On Sun, Nov 8, 2015 at 9:45 AM, Julia Lawall <julia.lawall@...6.fr> wrote:
>  Remove unneeded variable used to store return value.
>
> Generated by: scripts/coccinelle/misc/returnvar.cocci
>
> CC: Sinan Kaya <okaya@...eaurora.org>
> Signed-off-by: Fengguang Wu <fengguang.wu@...el.com>

Who is the author?
I suppose Fengguang is the reporter, right?

> ---
>
>  hidma_ll.c |    6 ++----
>  1 file changed, 2 insertions(+), 4 deletions(-)
>
> --- a/drivers/dma/qcom/hidma_ll.c
> +++ b/drivers/dma/qcom/hidma_ll.c
> @@ -567,14 +567,13 @@ int hidma_ll_resume(struct hidma_lldev *
>
>  static int hidma_ll_hw_start(struct hidma_lldev *lldev)
>  {
> -       int rc = 0;
>         unsigned long irqflags;
>
>         spin_lock_irqsave(&lldev->lock, irqflags);
>         writel(lldev->tre_write_offset, lldev->trca + TRCA_DOORBELL_OFFSET);
>         spin_unlock_irqrestore(&lldev->lock, irqflags);
>
> -       return rc;
> +       return 0;
>  }
>
>  bool hidma_ll_isenabled(struct hidma_lldev *lldev)
> @@ -600,7 +599,6 @@ bool hidma_ll_isenabled(struct hidma_lld
>  int hidma_ll_queue_request(struct hidma_lldev *lldev, u32 tre_ch)
>  {
>         struct hidma_tre *tre;
> -       int rc = 0;
>         unsigned long flags;
>
>         tre = &lldev->trepool[tre_ch];
> @@ -618,7 +616,7 @@ int hidma_ll_queue_request(struct hidma_
>         lldev->tre_write_offset = (lldev->tre_write_offset + TRE_SIZE)
>                                 % lldev->tre_ring_size;
>         spin_unlock_irqrestore(&lldev->lock, flags);
> -       return rc;
> +       return 0;
>  }
>
>  int hidma_ll_start(struct hidma_lldev *lldev)
> --
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-- 
With Best Regards,
Andy Shevchenko
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