Re: [PATCH 1/4] ARM/PCI: iop13xx: address uninitialized variable warning

From	Bjorn Helgaas <helgaas@kernel.org>
Newsgroups	linux.kernel
Subject	Re: [PATCH 1/4] ARM/PCI: iop13xx: address uninitialized variable warning
Date	2017-06-28 00:40 +0200
Message-ID	<tX7jl-6UY-43@gated-at.bofh.it> (permalink)
References	<tUVPj-3BI-3@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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On Wed, Jun 21, 2017 at 11:52:59PM +0200, Arnd Bergmann wrote:
> The last rework returned a variable that the compiler cannot prove
> to be initialized:
> 
> arch/arm/mach-iop13xx/pci.c: In function 'iop13xx_scan_bus':
> arch/arm/mach-iop13xx/pci.c:509:17: error: 'ret' may be used uninitialized in this function [-Werror=maybe-uninitialized]
> 
> In the switch statement that sets the return value, this adds
> a default returning an error.
> 
> Fixes: ace27646da8e ("ARM/PCI: Convert PCI scan API to pci_scan_root_bus_bridge()")
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Folded into Lorenzo's series on pci/enumeration, thanks!

> ---
>  arch/arm/mach-iop13xx/pci.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/arch/arm/mach-iop13xx/pci.c b/arch/arm/mach-iop13xx/pci.c
> index b97879bfb81a..3c51a9bb9b49 100644
> --- a/arch/arm/mach-iop13xx/pci.c
> +++ b/arch/arm/mach-iop13xx/pci.c
> @@ -553,6 +553,8 @@ int iop13xx_scan_bus(int nr, struct pci_host_bridge *bridge)
>  		if (!ret)
>  			pci_bus_atue = bridge->bus;
>  		break;
> +	default:
> +		ret = -EINVAL;
>  	}
>  
>  	return ret;
> -- 
> 2.9.0
> 
> 
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> linux-arm-kernel@lists.infradead.org
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[PATCH 1/4] ARM/PCI: iop13xx: address uninitialized variable warning Arnd Bergmann <arnd@arndb.de> - 2017-06-22 00:00 +0200
  Re: [PATCH 1/4] ARM/PCI: iop13xx: address uninitialized variable  warning Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> - 2017-06-22 10:50 +0200
  Re: [PATCH 1/4] ARM/PCI: iop13xx: address uninitialized variable  warning Bjorn Helgaas <helgaas@kernel.org> - 2017-06-28 00:40 +0200

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