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ALSA: pcm: Fix assignment in if condition

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There are a few places doing assignments in if condition in ALSA PCM
core code, which is a bad coding style that may confuse readers and
occasionally lead to bugs.

This patch is merely for coding-style fixes, no functional changes.

Link: https://lore.kernel.org/r/20210608140540.17885-55-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2021-06-08 16:05:28 +02:00
parent e3ded89966
commit 137c171cf7
3 changed files with 16 additions and 8 deletions
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6
sound/core/pcm_compat.c
View File

@ -239,7 +239,8 @@ static int snd_pcm_ioctl_hw_params_compat(struct snd_pcm_substream *substream,
struct snd_pcm_runtime *runtime;
int err;
if (! (runtime = substream->runtime))
runtime = substream->runtime;
if (!runtime)
return -ENOTTY;
data = kmalloc(sizeof(*data), GFP_KERNEL);
@ -343,7 +344,8 @@ static int snd_pcm_ioctl_xfern_compat(struct snd_pcm_substream *substream,
if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN)
return -EBADFD;
if ((ch = substream->runtime->channels) > 128)
ch = substream->runtime->channels;
if (ch > 128)
return -EINVAL;
if (get_user(buf, &data32->bufs) ||
get_user(frames, &data32->frames))

12
sound/core/pcm_misc.c
View File

@ -266,7 +266,8 @@ int snd_pcm_format_signed(snd_pcm_format_t format)
int val;
if (!valid_format(format))
return -EINVAL;
if ((val = pcm_formats[(INT)format].signd) < 0)
val = pcm_formats[(INT)format].signd;
if (val < 0)
return -EINVAL;
return val;
}
@ -314,7 +315,8 @@ int snd_pcm_format_little_endian(snd_pcm_format_t format)
int val;
if (!valid_format(format))
return -EINVAL;
if ((val = pcm_formats[(INT)format].le) < 0)
val = pcm_formats[(INT)format].le;
if (val < 0)
return -EINVAL;
return val;
}
@ -350,7 +352,8 @@ int snd_pcm_format_width(snd_pcm_format_t format)
int val;
if (!valid_format(format))
return -EINVAL;
if ((val = pcm_formats[(INT)format].width) == 0)
val = pcm_formats[(INT)format].width;
if (!val)
return -EINVAL;
return val;
}
@ -368,7 +371,8 @@ int snd_pcm_format_physical_width(snd_pcm_format_t format)
int val;
if (!valid_format(format))
return -EINVAL;
if ((val = pcm_formats[(INT)format].phys) == 0)
val = pcm_formats[(INT)format].phys;
if (!val)
return -EINVAL;
return val;
}

6
sound/core/pcm_native.c
View File

@ -768,7 +768,8 @@ static int snd_pcm_hw_params(struct snd_pcm_substream *substream,
if (cpu_latency_qos_request_active(&substream->latency_pm_qos_req))
cpu_latency_qos_remove_request(&substream->latency_pm_qos_req);
if ((usecs = period_to_usecs(runtime)) >= 0)
usecs = period_to_usecs(runtime);
if (usecs >= 0)
cpu_latency_qos_add_request(&substream->latency_pm_qos_req,
usecs);
return 0;
@ -2658,7 +2659,8 @@ int snd_pcm_open_substream(struct snd_pcm *pcm, int stream,
goto error;
}
if ((err = substream->ops->open(substream)) < 0)
err = substream->ops->open(substream);
if (err < 0)
goto error;
substream->hw_opened = 1;