linux-kernel - Re: [PATCH] xen/pci: remove redundant assignment to variable irq

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Message-ID: <20200630221249.GA3491219@bjorn-Precision-5520>
Date:   Tue, 30 Jun 2020 17:12:49 -0500
From:   Bjorn Helgaas <helgaas@...nel.org>
To:     Colin King <colin.king@...onical.com>
Cc:     Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        "H . Peter Anvin" <hpa@...or.com>, x86@...nel.org,
        xen-devel@...ts.xenproject.org, linux-pci@...r.kernel.org,
        kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org,
        Juergen Gross <jgross@...e.com>,
        Boris Ostrovsky <boris.ostrovsky@...cle.com>
Subject: Re: [PATCH] xen/pci: remove redundant assignment to variable irq

[+cc Juergen, Boris]

On Thu, Apr 09, 2020 at 12:41:18PM +0100, Colin King wrote:
> From: Colin Ian King <colin.king@...onical.com>
> 
> The variable irq is being initialized with a value that is never read
> and it is being updated later with a new value.  The initialization is
> redundant and can be removed.
> 
> Addresses-Coverity: ("Unused value")
> Signed-off-by: Colin Ian King <colin.king@...onical.com>

Applied to pci/virtualization for v5.9, thanks!

I don't see this in linux-next yet, but if anybody else would prefer
to take it, let me know and I'll drop it.  

> ---
>  arch/x86/pci/xen.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/x86/pci/xen.c b/arch/x86/pci/xen.c
> index 91220cc25854..80272eb49230 100644
> --- a/arch/x86/pci/xen.c
> +++ b/arch/x86/pci/xen.c
> @@ -63,7 +63,7 @@ static int xen_pcifront_enable_irq(struct pci_dev *dev)
>  static int xen_register_pirq(u32 gsi, int gsi_override, int triggering,
>  			     bool set_pirq)
>  {
> -	int rc, pirq = -1, irq = -1;
> +	int rc, pirq = -1, irq;
>  	struct physdev_map_pirq map_irq;
>  	int shareable = 0;
>  	char *name;
> -- 
> 2.25.1
>