[PATCH] ALSA: cs5530: Use common error handling code in snd_cs5530_create()

[SF Markus Elfring]

From: Markus Elfring <elfr...@users.sourceforge.net>
Date: Mon, 13 Nov 2017 20:33:07 +0100

Add jump targets 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 <elfr...@users.sourceforge.net>
---
 sound/pci/cs5530.c | 48 ++++++++++++++++++++++++------------------------
 1 file changed, 24 insertions(+), 24 deletions(-)

diff --git a/sound/pci/cs5530.c b/sound/pci/cs5530.c
index 0a8cf94c4858..88f253489075 100644
--- a/sound/pci/cs5530.c
+++ b/sound/pci/cs5530.c
@@ -124,8 +124,8 @@ static int snd_cs5530_create(struct snd_card *card,
 
        chip = kzalloc(sizeof(*chip), GFP_KERNEL);
        if (chip == NULL) {
-               pci_disable_device(pci);
-               return -ENOMEM;
+               err = -ENOMEM;
+               goto disable_device;
        }
 
        chip->card = card;
@@ -134,15 +134,14 @@ static int snd_cs5530_create(struct snd_card *card,
        err = pci_request_regions(pci, "CS5530");
        if (err < 0) {
                kfree(chip); 
-               pci_disable_device(pci);
-               return err;
+               goto disable_device;
        }
        chip->pci_base = pci_resource_start(pci, 0);
 
        mem = pci_ioremap_bar(pci, 0);
        if (mem == NULL) {
-               snd_cs5530_free(chip);
-               return -EBUSY;
+               err = -EBUSY;
+               goto free_sound_chip;
        }
 
        map = readw(mem + 0x18);
@@ -163,8 +162,7 @@ static int snd_cs5530_create(struct snd_card *card,
                dev_info(card->dev, "XpressAudio at 0x%lx\n", sb_base);
        else {
                dev_err(card->dev, "Could not find XpressAudio!\n");
-               snd_cs5530_free(chip);
-               return -ENODEV;
+               goto e_nodev;
        }
 
        if (map & (1<<5))
@@ -183,8 +181,7 @@ static int snd_cs5530_create(struct snd_card *card,
                dma16 = 7;
        else {
                dev_err(card->dev, "No 16bit DMA enabled\n");
-               snd_cs5530_free(chip);
-               return -ENODEV;
+               goto e_nodev;
        }
 
        if (dma8 & 0x01)
@@ -195,8 +192,7 @@ static int snd_cs5530_create(struct snd_card *card,
                dma8 = 3;
        else {
                dev_err(card->dev, "No 8bit DMA enabled\n");
-               snd_cs5530_free(chip);
-               return -ENODEV;
+               goto e_nodev;
        }
 
        if (irq & 1)
@@ -209,8 +205,7 @@ static int snd_cs5530_create(struct snd_card *card,
                irq = 10;
        else {
                dev_err(card->dev, "SoundBlaster IRQ not set\n");
-               snd_cs5530_free(chip);
-               return -ENODEV;
+               goto e_nodev;
        }
 
        dev_info(card->dev, "IRQ: %d DMA8: %d DMA16: %d\n", irq, dma8, dma16);
@@ -219,32 +214,37 @@ static int snd_cs5530_create(struct snd_card *card,
                                                dma16, SB_HW_CS5530, &chip->sb);
        if (err < 0) {
                dev_err(card->dev, "Could not create SoundBlaster\n");
-               snd_cs5530_free(chip);
-               return err;
+               goto free_sound_chip;
        }
 
        err = snd_sb16dsp_pcm(chip->sb, 0);
        if (err < 0) {
                dev_err(card->dev, "Could not create PCM\n");
-               snd_cs5530_free(chip);
-               return err;
+               goto free_sound_chip;
        }
 
        err = snd_sbmixer_new(chip->sb);
        if (err < 0) {
                dev_err(card->dev, "Could not create Mixer\n");
-               snd_cs5530_free(chip);
-               return err;
+               goto free_sound_chip;
        }
 
        err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
-       if (err < 0) {
-               snd_cs5530_free(chip);
-               return err;
-       }
+       if (err < 0)
+               goto free_sound_chip;
 
        *rchip = chip;
        return 0;
+
+disable_device:
+       pci_disable_device(pci);
+       return err;
+
+e_nodev:
+       err = -ENODEV;
+free_sound_chip:
+       snd_cs5530_free(chip);
+       return err;
 }
 
 static int snd_cs5530_probe(struct pci_dev *pci,
-- 
2.15.0