linux-kernel - Re: [alsa-devel] [PATCH][next] ALSA: firewire-lib: remove redundant assignment to cip

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Message-Id: <9fe864d1-db6c-4b72-bfa3-3a1c638f1fae@www.fastmail.com>
Date:   Sat, 25 May 2019 14:45:57 +0900
From:   "Takashi Sakamoto" <o-takashi@...amocchi.jp>
To:     "Colin King" <colin.king@...onical.com>,
        "Clemens Ladisch" <clemens@...isch.de>,
        "Jaroslav Kysela" <perex@...ex.cz>,
        "Takashi Iwai" <tiwai@...e.com>, alsa-devel@...a-project.org
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [alsa-devel] [PATCH][next] ALSA: firewire-lib: remove redundant	assignment to cip_header

Hi Colin,

On Sat, May 25, 2019, at 06:35, Colin King wrote:
> From: Colin Ian King <colin.king@...onical.com>
> 
> The assignement to cip_header is redundant as the value never
> read and it is being re-assigned in the if and else paths of
> the following if statement. Clean up the code by removing it.
> 
> Addresses-Coverity: ("Unused value")
> Signed-off-by: Colin Ian King <colin.king@...onical.com>
> ---
>  sound/firewire/amdtp-stream.c | 1 -
>  1 file changed, 1 deletion(-)
> 
> diff --git a/sound/firewire/amdtp-stream.c 
> b/sound/firewire/amdtp-stream.c
> index 2d9c764061d1..4236955bbf57 100644
> --- a/sound/firewire/amdtp-stream.c
> +++ b/sound/firewire/amdtp-stream.c
> @@ -675,7 +675,6 @@ static int handle_in_packet(struct amdtp_stream *s, 
> unsigned int cycle,
>  		return -EIO;
>  	}
>  
> -	cip_header = ctx_header + 2;
>  	if (!(s->flags & CIP_NO_HEADER)) {
>  		cip_header = &ctx_header[2];
>  		err = check_cip_header(s, cip_header, payload_length,

Thanks for the fix. I've already posted further patch for refactoring
and this was also fixed by a commit 98e3e43b599d ("
ALSA: firewire-lib: refactoring to obsolete IR packet handler").

https://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git/commit/?id=98e3e43b599d742c104864c6772a251025ffb52b

Thanks


Takashi Sakamoto