[PATCH 54/66] ALSA: pcm: Fix assignment in if condition

[Takashi Iwai]

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.

Signed-off-by: Takashi Iwai <tiwai at suse.de>
---
 sound/core/pcm_compat.c |  6 ++++--
 sound/core/pcm_misc.c   | 12 ++++++++----
 sound/core/pcm_native.c |  6 ++++--
 3 files changed, 16 insertions(+), 8 deletions(-)

diff --git a/sound/core/pcm_compat.c b/sound/core/pcm_compat.c
index 590a46a9e78d..a59de24695ec 100644
--- a/sound/core/pcm_compat.c
+++ b/sound/core/pcm_compat.c
@@ -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))
diff --git a/sound/core/pcm_misc.c b/sound/core/pcm_misc.c
index 257d412eac5d..4866aed97aac 100644
--- a/sound/core/pcm_misc.c
+++ b/sound/core/pcm_misc.c
@@ -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;
 }
diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c
index 11acea02bc74..eb468573f070 100644
--- a/sound/core/pcm_native.c
+++ b/sound/core/pcm_native.c
@@ -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;
-- 
2.26.2