linux-kernel - Re: [PATCH] ASoC: Freescale: Delete an error message for a failed memory allocation in three functions

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Date:   Fri, 11 Aug 2017 07:44:31 -0700
From:   Joe Perches <joe@...ches.com>
To:     SF Markus Elfring <elfring@...rs.sourceforge.net>,
        alsa-devel@...a-project.org, linuxppc-dev@...ts.ozlabs.org,
        Fabio Estevam <fabio.estevam@....com>,
        Jaroslav Kysela <perex@...ex.cz>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Nicolin Chen <nicoleotsuka@...il.com>,
        Takashi Iwai <tiwai@...e.com>, Timur Tabi <timur@...i.org>,
        Xiubo Li <Xiubo.Lee@...il.com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org
Subject: Re: [PATCH] ASoC: Freescale: Delete an error message for a failed
 memory allocation in three functions

On Fri, 2017-08-11 at 15:32 +0200, SF Markus Elfring wrote:
> From 885ccd6c63291dcd4854a0cbaab5188cdc3db805 Mon Sep 17 00:00:00 2001
> From: Markus Elfring <elfring@...rs.sourceforge.net>
> Date: Fri, 11 Aug 2017 15:10:43 +0200
> Subject: [PATCH] ASoC: Freescale: Delete an error message for a failed memory allocation in three functions
> 
> Omit an extra message for a memory allocation failure in these functions.
> 
> This issue was detected by using the Coccinelle software.
> 
> Link: http://events.linuxfoundation.org/sites/events/files/slides/LCJ16-Refactor_Strings-WSang_0.pdf

This doesn't have anything to do with refactoring strings.

Just note that allocations without GFP_NOWARN do a dump_stack()

> diff --git a/sound/soc/fsl/fsl_asrc_dma.c b/sound/soc/fsl/fsl_asrc_dma.c
[]
> @@ -282,7 +282,5 @@ static int fsl_asrc_dma_startup(struct snd_pcm_substream *substream)
> -	if (!pair) {
> -		dev_err(dev, "failed to allocate pair\n");
> +	if (!pair)
>  		return -ENOMEM;
> -	}

Use normal diff output that shows 3 lines of context
above and below the patched lines.