linux-kernel - [PATCH 2/3] ALSA: sonicvibes: Use common error handling code in snd_sonic

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Date:   Sat, 18 Nov 2017 16:32:16 +0100
From:   SF Markus Elfring <elfring@...rs.sourceforge.net>
To:     alsa-devel@...a-project.org, Bhumika Goyal <bhumirks@...il.com>,
        David Howells <dhowells@...hat.com>,
        Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org
Subject: [PATCH 2/3] ALSA: sonicvibes: Use common error handling code in
 snd_sonic_probe()

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Sat, 18 Nov 2017 16:10:34 +0100

Add a jump target so that a bit of exception handling can be better reused
at the end of this function.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 sound/pci/sonicvibes.c | 54 ++++++++++++++++++++++----------------------------
 1 file changed, 24 insertions(+), 30 deletions(-)

diff --git a/sound/pci/sonicvibes.c b/sound/pci/sonicvibes.c
index 7c238d908031..75fc64839df0 100644
--- a/sound/pci/sonicvibes.c
+++ b/sound/pci/sonicvibes.c
@@ -1478,17 +1478,15 @@ static int snd_sonic_probe(struct pci_dev *pci,
 	for (idx = 0; idx < 5; idx++) {
 		if (pci_resource_start(pci, idx) == 0 ||
 		    !(pci_resource_flags(pci, idx) & IORESOURCE_IO)) {
-			snd_card_free(card);
-			return -ENODEV;
+			err = -ENODEV;
+			goto free_card;
 		}
 	}
 
 	err = snd_sonicvibes_create(card, pci, reverb[dev] ? 1 : 0,
 				    mge[dev] ? 1 : 0, &sonic);
-	if (err < 0) {
-		snd_card_free(card);
-		return err;
-	}
+	if (err < 0)
+		goto free_card;
 
 	strcpy(card->driver, "SonicVibes");
 	strcpy(card->shortname, "S3 SonicVibes");
@@ -1499,48 +1497,44 @@ static int snd_sonic_probe(struct pci_dev *pci,
 		sonic->irq);
 
 	err = snd_sonicvibes_pcm(sonic, 0);
-	if (err < 0) {
-		snd_card_free(card);
-		return err;
-	}
+	if (err < 0)
+		goto free_card;
+
 	err = snd_sonicvibes_mixer(sonic);
-	if (err < 0) {
-		snd_card_free(card);
-		return err;
-	}
+	if (err < 0)
+		goto free_card;
+
 	err = snd_mpu401_uart_new(card, 0, MPU401_HW_SONICVIBES,
 				  sonic->midi_port,
 				  MPU401_INFO_INTEGRATED | MPU401_INFO_IRQ_HOOK,
 				  -1, &midi_uart);
-	if (err < 0) {
-		snd_card_free(card);
-		return err;
-	}
+	if (err < 0)
+		goto free_card;
+
 	snd_sonicvibes_midi(sonic, midi_uart);
 	err = snd_opl3_create(card, sonic->synth_port,
 			      sonic->synth_port + 2,
 			      OPL3_HW_OPL3_SV, 1, &opl3);
-	if (err < 0) {
-		snd_card_free(card);
-		return err;
-	}
+	if (err < 0)
+		goto free_card;
+
 	err = snd_opl3_hwdep_new(opl3, 0, 1, NULL);
-	if (err < 0) {
-		snd_card_free(card);
-		return err;
-	}
+	if (err < 0)
+		goto free_card;
 
 	snd_sonicvibes_create_gameport(sonic);
 
 	err = snd_card_register(card);
-	if (err < 0) {
-		snd_card_free(card);
-		return err;
-	}
+	if (err < 0)
+		goto free_card;
 	
 	pci_set_drvdata(pci, card);
 	dev++;
 	return 0;
+
+free_card:
+	snd_card_free(card);
+	return err;
 }
 
 static void snd_sonic_remove(struct pci_dev *pci)
-- 
2.15.0