linux-kernel - Re: [PATCH] spi-nor: use ERR

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Date:   Sun, 12 Feb 2017 22:45:43 +0100
From:   Boris Brezillon <boris.brezillon@...e-electrons.com>
To:     Nicholas Mc Guire <der.herr@...r.at>
Cc:     Cyrille Pitchen <cyrille.pitchen@...el.com>,
        Marek Vasut <marek.vasut@...il.com>,
        David Woodhouse <dwmw2@...radead.org>,
        Brian Norris <computersforpeace@...il.com>,
        Richard Weinberger <richard@....at>,
        linux-mtd@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] spi-nor: use ERR_CAST in return

On Sun, 12 Feb 2017 17:43:43 +0100
Nicholas Mc Guire <der.herr@...r.at> wrote:

> This fixes a sparse warning about 

Your commit message seems to be incomplete.

Once fixed,

Acked-by: Boris Brezillon <boris.brezilon@...e-electrons.com>

> 
> Signed-off-by: Nicholas Mc Guire <der.herr@...r.at>
> ---
> 
> sparse complained about:
> drivers/mtd/spi-nor/intel-spi.c:731:28: warning: incorrect type in return expression (different address spaces)
> drivers/mtd/spi-nor/intel-spi.c:731:28:    expected struct intel_spi *
> drivers/mtd/spi-nor/intel-spi.c:731:28:    got void [noderef] <asn:2>*base
> 
> Patch was compile tested with: multi_v7_defconfig (implies CONFIG_MTD_SPI_NOR=y)
> 
> Patch is against 4.10-rc6 (localversion-next is next-20170210)
> 
>  drivers/mtd/spi-nor/intel-spi.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/mtd/spi-nor/intel-spi.c b/drivers/mtd/spi-nor/intel-spi.c
> index e43ce63..986a3d0 100644
> --- a/drivers/mtd/spi-nor/intel-spi.c
> +++ b/drivers/mtd/spi-nor/intel-spi.c
> @@ -728,7 +728,7 @@ struct intel_spi *intel_spi_probe(struct device *dev,
>  
>  	ispi->base = devm_ioremap_resource(dev, mem);
>  	if (IS_ERR(ispi->base))
> -		return ispi->base;
> +		return ERR_CAST(ispi->base);
>  
>  	ispi->dev = dev;
>  	ispi->info = info;