linux-kernel - Re: [PATCH v2] ALSA: rme9652: use explicitly signed char

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Date:   Tue, 25 Oct 2022 08:21:55 +0200
From:   Takashi Iwai <tiwai@...e.de>
To:     "Jason A. Donenfeld" <Jason@...c4.com>
Cc:     linux-kernel@...r.kernel.org, Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>, alsa-devel@...a-project.org
Subject: Re: [PATCH v2] ALSA: rme9652: use explicitly signed char

On Tue, 25 Oct 2022 02:03:13 +0200,
Jason A. Donenfeld wrote:
> 
> With char becoming unsigned by default, and with `char` alone being
> ambiguous and based on architecture, signed chars need to be marked
> explicitly as such. This fixes warnings like:
> 
> sound/pci/rme9652/hdsp.c:3953 hdsp_channel_buffer_location() warn: 'hdsp->channel_map[channel]' is unsigned
> sound/pci/rme9652/hdsp.c:4153 snd_hdsp_channel_info() warn: impossible condition '(hdsp->channel_map[channel] < 0) => (0-255 < 0)'
> sound/pci/rme9652/rme9652.c:1833 rme9652_channel_buffer_location() warn: 'rme9652->channel_map[channel]' is unsigned
> 
> Cc: Jaroslav Kysela <perex@...ex.cz>
> Cc: Takashi Iwai <tiwai@...e.com>
> Cc: alsa-devel@...a-project.org
> Signed-off-by: Jason A. Donenfeld <Jason@...c4.com>

Applied now.  Thanks!


Takashi