linux-kernel - Re: [PATCH 4/5] ALSA: Fix assignment of 0/1 to bool variables

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Date:	Thu, 26 Sep 2013 09:57:43 +0200
From:	Takashi Iwai <tiwai@...e.de>
To:	Peter Senna Tschudin <peter.senna@...il.com>
Cc:	perex@...ex.cz, wfp5p@...ginia.edu, zonque@...il.com,
	eldad@...refinery.com, david.henningsson@...onical.com,
	hegge@...isty.net, linux-kernel@...r.kernel.org,
	kernel-janitors@...r.kernel.org, alsa-devel@...a-project.org
Subject: Re: [PATCH 4/5] ALSA: Fix assignment of 0/1 to bool variables

At Sun, 22 Sep 2013 20:44:12 +0200,
Peter Senna Tschudin wrote:
> 
> Convert 0 to false and 1 to true when assigning values to bool
> variables. Inspired by commit 3db1cd5c05f35fb43eb134df6f321de4e63141f2.
> 
> The simplified semantic patch that find this problem is as
> follows (http://coccinelle.lip6.fr/):
> 
> @@
> bool b;
> @@
> (
> -b = 0
> +b = false
> |
> -b = 1
> +b = true
> )
> 
> Signed-off-by: Peter Senna Tschudin <peter.senna@...il.com>

Thanks, applied now.


Takashi

> 
> ---
>  sound/pci/azt3328.c |   14 +++++++-------
>  sound/usb/mixer.c   |    4 ++--
>  2 files changed, 9 insertions(+), 9 deletions(-)
> 
> diff -u -p a/sound/usb/mixer.c b/sound/usb/mixer.c
> --- a/sound/usb/mixer.c
> +++ b/sound/usb/mixer.c
> @@ -1151,14 +1151,14 @@ static void check_no_speaker_on_headset(
>  	const char *names_to_check[] = {
>  		"Headset", "headset", "Headphone", "headphone", NULL};
>  	const char **s;
> -	bool found = 0;
> +	bool found = false;
>  
>  	if (strcmp("Speaker", kctl->id.name))
>  		return;
>  
>  	for (s = names_to_check; *s; s++)
>  		if (strstr(card->shortname, *s)) {
> -			found = 1;
> +			found = true;
>  			break;
>  		}
>  
> diff -u -p a/sound/pci/azt3328.c b/sound/pci/azt3328.c
> --- a/sound/pci/azt3328.c
> +++ b/sound/pci/azt3328.c
> @@ -715,14 +715,14 @@ snd_azf3328_mixer_ac97_read(struct snd_a
>  	const struct snd_azf3328 *chip = ac97->private_data;
>  	unsigned short reg_azf = snd_azf3328_mixer_ac97_map_reg_idx(reg_ac97);
>  	unsigned short reg_val = 0;
> -	bool unsupported = 0;
> +	bool unsupported = false;
>  
>  	snd_azf3328_dbgmixer(
>  		"snd_azf3328_mixer_ac97_read reg_ac97 %u\n",
>  			reg_ac97
>  	);
>  	if (reg_azf & AZF_AC97_REG_UNSUPPORTED)
> -		unsupported = 1;
> +		unsupported = true;
>  	else {
>  		if (reg_azf & AZF_AC97_REG_REAL_IO_READ)
>  			reg_val = snd_azf3328_mixer_inw(chip,
> @@ -759,7 +759,7 @@ snd_azf3328_mixer_ac97_read(struct snd_a
>  				reg_val = azf_emulated_ac97_vendor_id & 0xffff;
>  				break;
>  			default:
> -				unsupported = 1;
> +				unsupported = true;
>  				break;
>  			}
>  		}
> @@ -776,14 +776,14 @@ snd_azf3328_mixer_ac97_write(struct snd_
>  {
>  	const struct snd_azf3328 *chip = ac97->private_data;
>  	unsigned short reg_azf = snd_azf3328_mixer_ac97_map_reg_idx(reg_ac97);
> -	bool unsupported = 0;
> +	bool unsupported = false;
>  
>  	snd_azf3328_dbgmixer(
>  		"snd_azf3328_mixer_ac97_write reg_ac97 %u val %u\n",
>  			reg_ac97, val
>  	);
>  	if (reg_azf & AZF_AC97_REG_UNSUPPORTED)
> -		unsupported = 1;
> +		unsupported = true;
>  	else {
>  		if (reg_azf & AZF_AC97_REG_REAL_IO_WRITE)
>  			snd_azf3328_mixer_outw(
> @@ -808,7 +808,7 @@ snd_azf3328_mixer_ac97_write(struct snd_
>  				 */
>  				break;
>  			default:
> -				unsupported = 1;
> +				unsupported = true;
>  				break;
>  			}
>  		}
> @@ -1559,7 +1559,7 @@ snd_azf3328_pcm_trigger(struct snd_pcm_s
>  	struct snd_azf3328_codec_data *codec = runtime->private_data;
>  	int result = 0;
>  	u16 flags1;
> -	bool previously_muted = 0;
> +	bool previously_muted = false;
>  	bool is_main_mixer_playback_codec = (AZF_CODEC_PLAYBACK == codec->type);
>  
>  	snd_azf3328_dbgcalls("snd_azf3328_pcm_trigger cmd %d\n", cmd);
> 
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