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From: Takashi Iwai <tiwai@suse.de>
To: alsa-devel@alsa-project.org
Subject: [PATCH 06/66] ALSA: wavefront: Fix assignment in if condition
Date: Tue,  8 Jun 2021 16:04:40 +0200	[thread overview]
Message-ID: <20210608140540.17885-7-tiwai@suse.de> (raw)
In-Reply-To: <20210608140540.17885-1-tiwai@suse.de>

ISA WaveFront driver code contains lots of assignments in if
condition, 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@suse.de>
---
 sound/isa/wavefront/wavefront.c       |  6 ++-
 sound/isa/wavefront/wavefront_midi.c  | 20 ++++++----
 sound/isa/wavefront/wavefront_synth.c | 56 ++++++++++++++++-----------
 3 files changed, 50 insertions(+), 32 deletions(-)

diff --git a/sound/isa/wavefront/wavefront.c b/sound/isa/wavefront/wavefront.c
index a4437971df2f..dfdeaf7b6bf4 100644
--- a/sound/isa/wavefront/wavefront.c
+++ b/sound/isa/wavefront/wavefront.c
@@ -555,7 +555,8 @@ static int snd_wavefront_isa_probe(struct device *pdev,
 	err = snd_wavefront_card_new(pdev, dev, &card);
 	if (err < 0)
 		return err;
-	if ((err = snd_wavefront_probe(card, dev)) < 0) {
+	err = snd_wavefront_probe(card, dev);
+	if (err < 0) {
 		snd_card_free(card);
 		return err;
 	}
@@ -610,7 +611,8 @@ static int snd_wavefront_pnp_detect(struct pnp_card_link *pcard,
 		}
 	}
 
-	if ((res = snd_wavefront_probe(card, dev)) < 0)
+	res = snd_wavefront_probe(card, dev);
+	if (res < 0)
 		return res;
 
 	pnp_set_card_drvdata(pcard, card);
diff --git a/sound/isa/wavefront/wavefront_midi.c b/sound/isa/wavefront/wavefront_midi.c
index a337a86f7a65..72e775ac7ad7 100644
--- a/sound/isa/wavefront/wavefront_midi.c
+++ b/sound/isa/wavefront/wavefront_midi.c
@@ -239,7 +239,8 @@ static int snd_wavefront_midi_input_open(struct snd_rawmidi_substream *substream
 
 	mpu = *((snd_wavefront_mpu_id *) substream->rmidi->private_data);
 
-	if ((midi = get_wavefront_midi (substream)) == NULL)
+	midi = get_wavefront_midi(substream);
+	if (!midi)
 	        return -EIO;
 
 	spin_lock_irqsave (&midi->open, flags);
@@ -263,7 +264,8 @@ static int snd_wavefront_midi_output_open(struct snd_rawmidi_substream *substrea
 
 	mpu = *((snd_wavefront_mpu_id *) substream->rmidi->private_data);
 
-	if ((midi = get_wavefront_midi (substream)) == NULL)
+	midi = get_wavefront_midi(substream);
+	if (!midi)
 	        return -EIO;
 
 	spin_lock_irqsave (&midi->open, flags);
@@ -287,7 +289,8 @@ static int snd_wavefront_midi_input_close(struct snd_rawmidi_substream *substrea
 
 	mpu = *((snd_wavefront_mpu_id *) substream->rmidi->private_data);
 
-	if ((midi = get_wavefront_midi (substream)) == NULL)
+	midi = get_wavefront_midi(substream);
+	if (!midi)
 	        return -EIO;
 
 	spin_lock_irqsave (&midi->open, flags);
@@ -310,7 +313,8 @@ static int snd_wavefront_midi_output_close(struct snd_rawmidi_substream *substre
 
 	mpu = *((snd_wavefront_mpu_id *) substream->rmidi->private_data);
 
-	if ((midi = get_wavefront_midi (substream)) == NULL)
+	midi = get_wavefront_midi(substream);
+	if (!midi)
 	        return -EIO;
 
 	spin_lock_irqsave (&midi->open, flags);
@@ -333,9 +337,9 @@ static void snd_wavefront_midi_input_trigger(struct snd_rawmidi_substream *subst
 
 	mpu = *((snd_wavefront_mpu_id *) substream->rmidi->private_data);
 
-	if ((midi = get_wavefront_midi (substream)) == NULL) {
+	midi = get_wavefront_midi(substream);
+	if (!midi)
 		return;
-	}
 
 	spin_lock_irqsave (&midi->virtual, flags);
 	if (up) {
@@ -372,9 +376,9 @@ static void snd_wavefront_midi_output_trigger(struct snd_rawmidi_substream *subs
 
 	mpu = *((snd_wavefront_mpu_id *) substream->rmidi->private_data);
 
-	if ((midi = get_wavefront_midi (substream)) == NULL) {
+	midi = get_wavefront_midi(substream);
+	if (!midi)
 		return;
-	}
 
 	spin_lock_irqsave (&midi->virtual, flags);
 	if (up) {
diff --git a/sound/isa/wavefront/wavefront_synth.c b/sound/isa/wavefront/wavefront_synth.c
index d6420d224d09..69cbc79fbb71 100644
--- a/sound/isa/wavefront/wavefront_synth.c
+++ b/sound/isa/wavefront/wavefront_synth.c
@@ -339,7 +339,8 @@ snd_wavefront_cmd (snd_wavefront_t *dev,
 	int c;
 	struct wavefront_command *wfcmd;
 
-	if ((wfcmd = wavefront_get_command (cmd)) == NULL) {
+	wfcmd = wavefront_get_command(cmd);
+	if (!wfcmd) {
 		snd_printk ("command 0x%x not supported.\n",
 			cmd);
 		return 1;
@@ -391,7 +392,8 @@ snd_wavefront_cmd (snd_wavefront_t *dev,
 
 		for (i = 0; i < wfcmd->read_cnt; i++) {
 
-			if ((c = wavefront_read (dev)) == -1) {
+			c = wavefront_read(dev);
+			if (c == -1) {
 				DPRINT (WF_DEBUG_IO, "bad read for byte "
 						      "%d of 0x%x [%s].\n",
 						      i, cmd, wfcmd->action);
@@ -401,7 +403,8 @@ snd_wavefront_cmd (snd_wavefront_t *dev,
 			/* Now handle errors. Lots of special cases here */
 	    
 			if (c == 0xff) { 
-				if ((c = wavefront_read (dev)) == -1) {
+				c = wavefront_read(dev);
+				if (c == -1) {
 					DPRINT (WF_DEBUG_IO, "bad read for "
 							      "error byte at "
 							      "read byte %d "
@@ -459,9 +462,9 @@ snd_wavefront_cmd (snd_wavefront_t *dev,
 		   of the standard value.
 		*/
 	    
-		if ((ack = wavefront_read (dev)) == 0) {
+		ack = wavefront_read(dev);
+		if (ack == 0)
 			ack = WF_ACK;
-		}
 	
 		if (ack != WF_ACK) {
 			if (ack == -1) {
@@ -475,7 +478,8 @@ snd_wavefront_cmd (snd_wavefront_t *dev,
 
 				if (ack == 0xff) { /* explicit error */
 		    
-					if ((err = wavefront_read (dev)) == -1) {
+					err = wavefront_read(dev);
+					if (err == -1) {
 						DPRINT (WF_DEBUG_DATA,
 							"cannot read err "
 							"for 0x%x [%s].\n",
@@ -603,9 +607,9 @@ wavefront_delete_sample (snd_wavefront_t *dev, int sample_num)
 	wbuf[0] = sample_num & 0x7f;
 	wbuf[1] = sample_num >> 7;
 
-	if ((x = snd_wavefront_cmd (dev, WFC_DELETE_SAMPLE, NULL, wbuf)) == 0) {
+	x = snd_wavefront_cmd(dev, WFC_DELETE_SAMPLE, NULL, wbuf);
+	if (!x)
 		dev->sample_status[sample_num] = WF_ST_EMPTY;
-	}
 
 	return x;
 }
@@ -691,8 +695,9 @@ wavefront_get_patch_status (snd_wavefront_t *dev)
 		patchnum[0] = i & 0x7f;
 		patchnum[1] = i >> 7;
 
-		if ((x = snd_wavefront_cmd (dev, WFC_UPLOAD_PATCH, patchbuf,
-					patchnum)) == 0) {
+		x = snd_wavefront_cmd(dev, WFC_UPLOAD_PATCH, patchbuf,
+				      patchnum);
+		if (x == 0) {
 
 			dev->patch_status[i] |= WF_SLOT_FILLED;
 			p = (wavefront_patch *) patchbuf;
@@ -738,8 +743,9 @@ wavefront_get_program_status (snd_wavefront_t *dev)
 	for (i = 0; i < WF_MAX_PROGRAM; i++) {
 		prognum = i;
 
-		if ((x = snd_wavefront_cmd (dev, WFC_UPLOAD_PROGRAM, progbuf,
-					&prognum)) == 0) {
+		x = snd_wavefront_cmd(dev, WFC_UPLOAD_PROGRAM, progbuf,
+				      &prognum);
+		if (x == 0) {
 
 			dev->prog_status[i] |= WF_SLOT_USED;
 
@@ -894,9 +900,9 @@ wavefront_send_sample (snd_wavefront_t *dev,
 	if (header->number == WAVEFRONT_FIND_FREE_SAMPLE_SLOT) {
 		int x;
 
-		if ((x = wavefront_find_free_sample (dev)) < 0) {
+		x = wavefront_find_free_sample(dev);
+		if (x < 0)
 			return -ENOMEM;
-		}
 		snd_printk ("unspecified sample => %d\n", x);
 		header->number = x;
 	}
@@ -1137,7 +1143,8 @@ wavefront_send_sample (snd_wavefront_t *dev,
 		   nothing to do with DMA at all.
 		*/
 	
-		if ((dma_ack = wavefront_read (dev)) != WF_DMA_ACK) {
+		dma_ack = wavefront_read(dev);
+		if (dma_ack != WF_DMA_ACK) {
 			if (dma_ack == -1) {
 				snd_printk ("upload sample "
 					    "DMA ack timeout\n");
@@ -1282,14 +1289,16 @@ wavefront_fetch_multisample (snd_wavefront_t *dev,
 		char d[2];
 		int val;
 	
-		if ((val = wavefront_read (dev)) == -1) {
+		val = wavefront_read(dev);
+		if (val == -1) {
 			snd_printk ("upload multisample failed "
 				    "during sample loop.\n");
 			return -EIO;
 		}
 		d[0] = val;
 
-		if ((val = wavefront_read (dev)) == -1) {
+		val = wavefront_read(dev);
+		if (val == -1) {
 			snd_printk ("upload multisample failed "
 				    "during sample loop.\n");
 			return -EIO;
@@ -1910,7 +1919,8 @@ wavefront_reset_to_cleanliness (snd_wavefront_t *dev)
 		goto gone_bad;
 	}
 	
-	if ((hwv[0] = wavefront_read (dev)) == -1) {
+	hwv[0] = wavefront_read(dev);
+	if (hwv[0] == -1) {
 		snd_printk ("board not responding correctly.\n");
 		goto gone_bad;
 	}
@@ -1921,7 +1931,8 @@ wavefront_reset_to_cleanliness (snd_wavefront_t *dev)
 		   and tell us about it either way.
 		*/
 		
-		if ((hwv[0] = wavefront_read (dev)) == -1) {
+		hwv[0] = wavefront_read(dev);
+		if (hwv[0] == -1) {
 			snd_printk ("on-board RAM test failed "
 				    "(bad error code).\n");
 		} else {
@@ -1934,7 +1945,8 @@ wavefront_reset_to_cleanliness (snd_wavefront_t *dev)
 
 	/* We're OK, just get the next byte of the HW version response */
 
-	if ((hwv[1] = wavefront_read (dev)) == -1) {
+	hwv[1] = wavefront_read(dev);
+	if (hwv[1] == -1) {
 		snd_printk ("incorrect h/w response.\n");
 		goto gone_bad;
 	}
@@ -2079,9 +2091,9 @@ wavefront_do_reset (snd_wavefront_t *dev)
 	   about it.
 	*/
 	
-	if ((dev->freemem = wavefront_freemem (dev)) < 0) {
+	dev->freemem = wavefront_freemem(dev);
+	if (dev->freemem < 0)
 		goto gone_bad;
-	}
 		
 	snd_printk ("available DRAM %dk\n", dev->freemem / 1024);
 
-- 
2.26.2


  parent reply	other threads:[~2021-06-08 14:12 UTC|newest]

Thread overview: 67+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-08 14:04 [PATCH 00/66] ALSA: " Takashi Iwai
2021-06-08 14:04 ` [PATCH 01/66] ALSA: sb: " Takashi Iwai
2021-06-08 14:04 ` [PATCH 02/66] ALSA: sb: Minor coding style fixes Takashi Iwai
2021-06-08 14:04 ` [PATCH 03/66] ALSA: sb: Fix potential double-free of CSP mixer elements Takashi Iwai
2021-06-08 14:04 ` [PATCH 04/66] ALSA: gus: Fix assignment in if condition Takashi Iwai
2021-06-08 14:04 ` [PATCH 05/66] ALSA: ad1816a: " Takashi Iwai
2021-06-08 14:04 ` Takashi Iwai [this message]
2021-06-08 14:04 ` [PATCH 07/66] ALSA: cs423x: " Takashi Iwai
2021-06-08 14:04 ` [PATCH 08/66] ALSA: opti9xx: " Takashi Iwai
2021-06-08 14:04 ` [PATCH 09/66] ALSA: opl3sa2: " Takashi Iwai
2021-06-08 14:04 ` [PATCH 10/66] ALSA: es18xx: " Takashi Iwai
2021-06-08 14:04 ` [PATCH 11/66] ALSA: cmi8330: " Takashi Iwai
2021-06-08 14:04 ` [PATCH 12/66] ALSA: als100: " Takashi Iwai
2021-06-08 14:04 ` [PATCH 13/66] ALSA: azt2320: " Takashi Iwai
2021-06-08 14:04 ` [PATCH 14/66] ALSA: isa: " Takashi Iwai
2021-06-08 14:04 ` [PATCH 15/66] ALSA: ad1889: " Takashi Iwai
2021-06-08 14:04 ` [PATCH 16/66] ALSA: ak4531: " Takashi Iwai
2021-06-08 14:04 ` [PATCH 17/66] ALSA: als300: " Takashi Iwai
2021-06-08 14:04 ` [PATCH 18/66] ALSA: als4000: " Takashi Iwai
2021-06-08 14:04 ` [PATCH 19/66] ALSA: atiixp: " Takashi Iwai
2021-06-08 14:04 ` [PATCH 20/66] ALSA: azt3328: " Takashi Iwai
2021-06-08 14:04 ` [PATCH 21/66] ALSA: bt87x: " Takashi Iwai
2021-06-08 14:04 ` [PATCH 22/66] ALSA: cmipci: " Takashi Iwai
2021-06-08 14:04 ` [PATCH 23/66] ALSA: cs4281: " Takashi Iwai
2021-06-08 14:04 ` [PATCH 24/66] ALSA: ens137x: " Takashi Iwai
2021-06-08 14:04 ` [PATCH 25/66] ALSA: es1938: " Takashi Iwai
2021-06-08 14:05 ` [PATCH 26/66] ALSA: es1968: " Takashi Iwai
2021-06-08 14:05 ` [PATCH 27/66] ALSA: fm801: " Takashi Iwai
2021-06-08 14:05 ` [PATCH 28/66] ALSA: intel8x0: " Takashi Iwai
2021-06-08 14:05 ` [PATCH 29/66] ALSA: maestro3: " Takashi Iwai
2021-06-08 14:05 ` [PATCH 30/66] ALSA: rme32: " Takashi Iwai
2021-06-08 14:05 ` [PATCH 31/66] ALSA: rme96: " Takashi Iwai
2021-06-08 14:05 ` [PATCH 32/66] ALSA: sonicvibes: " Takashi Iwai
2021-06-08 14:05 ` [PATCH 33/66] ALSA: via82xx: " Takashi Iwai
2021-06-08 14:05 ` [PATCH 34/66] ALSA: ac97: " Takashi Iwai
2021-06-08 14:05 ` [PATCH 35/66] ALSA: au88x0: " Takashi Iwai
2021-06-08 14:05 ` [PATCH 36/66] ALSA: ca0106: " Takashi Iwai
2021-06-08 14:05 ` [PATCH 37/66] ALSA: cs46xx: " Takashi Iwai
2021-06-08 14:05 ` [PATCH 38/66] ALSA: cs5535audio: " Takashi Iwai
2021-06-08 14:05 ` [PATCH 39/66] ALSA: echoaudio: " Takashi Iwai
2021-06-08 14:05 ` [PATCH 40/66] ALSA: emu10k1: " Takashi Iwai
2021-06-08 14:05 ` [PATCH 41/66] ALSA: emu10k1x: " Takashi Iwai
2021-06-08 14:05 ` [PATCH 42/66] ALSA: ice1712: " Takashi Iwai
2021-06-08 14:05 ` [PATCH 43/66] ALSA: korg1212: " Takashi Iwai
2021-06-08 14:05 ` [PATCH 44/66] ALSA: mixart: " Takashi Iwai
2021-06-08 14:05 ` [PATCH 45/66] ALSA: nm256: " Takashi Iwai
2021-06-08 14:05 ` [PATCH 46/66] ALSA: pcxhr: " Takashi Iwai
2021-06-08 14:05 ` [PATCH 47/66] ALSA: riptide: " Takashi Iwai
2021-06-08 14:05 ` [PATCH 48/66] ALSA: hdsp: " Takashi Iwai
2021-06-08 14:05 ` [PATCH 49/66] ALSA: rme9652: " Takashi Iwai
2021-06-08 14:05 ` [PATCH 50/66] ALSA: trident: " Takashi Iwai
2021-06-08 14:05 ` [PATCH 51/66] ALSA: vx222: " Takashi Iwai
2021-06-08 14:05 ` [PATCH 52/66] ALSA: ymfpci: " Takashi Iwai
2021-06-08 14:05 ` [PATCH 53/66] ALSA: core: " Takashi Iwai
2021-06-08 14:05 ` [PATCH 54/66] ALSA: pcm: " Takashi Iwai
2021-06-08 14:05 ` [PATCH 55/66] ALSA: oss: " Takashi Iwai
2021-06-08 14:05 ` [PATCH 56/66] ALSA: seq: " Takashi Iwai
2021-06-08 14:05 ` [PATCH 57/66] ALSA: pcmcia: " Takashi Iwai
2021-06-08 14:05 ` [PATCH 58/66] ALSA: sparc: " Takashi Iwai
2021-06-08 14:05 ` [PATCH 59/66] ALSA: mpu401: " Takashi Iwai
2021-06-08 14:05 ` [PATCH 60/66] ALSA: vx: " Takashi Iwai
2021-06-08 14:05 ` [PATCH 61/66] ALSA: opl3: " Takashi Iwai
2021-06-08 14:05 ` [PATCH 62/66] ALSA: serial: " Takashi Iwai
2021-06-08 14:05 ` [PATCH 63/66] ALSA: synth: " Takashi Iwai
2021-06-08 14:05 ` [PATCH 64/66] ALSA: poewrmac: " Takashi Iwai
2021-06-08 14:05 ` [PATCH 65/66] ALSA: i2c: " Takashi Iwai
2021-06-08 14:05 ` [PATCH 66/66] ALSA: parisc: " Takashi Iwai

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