linux-kernel - Re: [PATCH] ASoC: Intel: mrfld: return error codes when an error occurs

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Date:   Mon, 10 Feb 2020 11:49:55 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     Colin King <colin.king@...onical.com>,
        Vinod Koul <vkoul@...nel.org>
Cc:     Cezary Rojewski <cezary.rojewski@...el.com>,
        Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>,
        Liam Girdwood <liam.r.girdwood@...ux.intel.com>,
        Jie Yang <yang.jie@...ux.intel.com>,
        Mark Brown <broonie@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        "Subhransu S . Prusty" <subhransu.s.prusty@...el.com>,
        alsa-devel@...a-project.org, kernel-janitors@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ASoC: Intel: mrfld: return error codes when an error
 occurs

On Sat, Feb 08, 2020 at 10:07:20PM +0000, Colin King wrote:
> From: Colin Ian King <colin.king@...onical.com>
> 
> Currently function sst_platform_get_resources always returns zero and
> error return codes set by the function are never returned. Fix this
> by returning the error return code in variable ret rather than the
> hard coded zero.
> 
> Addresses-Coverity: ("Unused value")
> Fixes: f533a035e4da ("ASoC: Intel: mrfld - create separate module for pci part")
> Signed-off-by: Colin Ian King <colin.king@...onical.com>
> ---
>  sound/soc/intel/atom/sst/sst_pci.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/sound/soc/intel/atom/sst/sst_pci.c b/sound/soc/intel/atom/sst/sst_pci.c
> index d952719bc098..5862fe968083 100644
> --- a/sound/soc/intel/atom/sst/sst_pci.c
> +++ b/sound/soc/intel/atom/sst/sst_pci.c
> @@ -99,7 +99,7 @@ static int sst_platform_get_resources(struct intel_sst_drv *ctx)
>  	dev_dbg(ctx->dev, "DRAM Ptr %p\n", ctx->dram);
>  do_release_regions:
>  	pci_release_regions(pci);

It's weird that we release the regions on the success path.

regards,
dan carpenter

> -	return 0;
> +	return ret;
>  }