[PATCH 3/3] ALSA: sonicvibes: Use common error handling code in snd_sonicvibes_create()

[SF Markus Elfring]

From: Markus Elfring <elfr...@users.sourceforge.net>
Date: Sat, 18 Nov 2017 16:12:12 +0100

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

Signed-off-by: Markus Elfring <elfr...@users.sourceforge.net>
---
 sound/pci/sonicvibes.c | 36 ++++++++++++++++++++----------------
 1 file changed, 20 insertions(+), 16 deletions(-)

diff --git a/sound/pci/sonicvibes.c b/sound/pci/sonicvibes.c
index 75fc64839df0..c2147484c95d 100644
--- a/sound/pci/sonicvibes.c
+++ b/sound/pci/sonicvibes.c
@@ -1266,14 +1266,14 @@ static int snd_sonicvibes_create(struct snd_card *card,
            dma_set_coherent_mask(&pci->dev, DMA_BIT_MASK(24)) < 0) {
                dev_err(card->dev,
                        "architecture does not support 24bit PCI busmaster 
DMA\n");
-               pci_disable_device(pci);
-                return -ENXIO;
+               err = -ENXIO;
+               goto disable_device;
         }
 
        sonic = kzalloc(sizeof(*sonic), GFP_KERNEL);
        if (sonic == NULL) {
-               pci_disable_device(pci);
-               return -ENOMEM;
+               err = -ENOMEM;
+               goto disable_device;
        }
        spin_lock_init(&sonic->reg_lock);
        sonic->card = card;
@@ -1283,8 +1283,7 @@ static int snd_sonicvibes_create(struct snd_card *card,
        err = pci_request_regions(pci, "S3 SonicVibes");
        if (err < 0) {
                kfree(sonic);
-               pci_disable_device(pci);
-               return err;
+               goto disable_device;
        }
 
        sonic->sb_port = pci_resource_start(pci, 0);
@@ -1296,8 +1295,7 @@ static int snd_sonicvibes_create(struct snd_card *card,
        if (request_irq(pci->irq, snd_sonicvibes_interrupt, IRQF_SHARED,
                        KBUILD_MODNAME, sonic)) {
                dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
-               snd_sonicvibes_free(sonic);
-               return -EBUSY;
+               goto e_busy;
        }
        sonic->irq = pci->irq;
 
@@ -1325,20 +1323,18 @@ static int snd_sonicvibes_create(struct snd_card *card,
 
        sonic->res_dmaa = request_region(dmaa, 0x10, "S3 SonicVibes DDMA-A");
        if (!sonic->res_dmaa) {
-               snd_sonicvibes_free(sonic);
                dev_err(card->dev,
                        "unable to grab DDMA-A port at 0x%x-0x%x\n",
                        dmaa, dmaa + 0x10 - 1);
-               return -EBUSY;
+               goto e_busy;
        }
 
        sonic->res_dmac = request_region(dmac, 0x10, "S3 SonicVibes DDMA-C");
        if (!sonic->res_dmac) {
-               snd_sonicvibes_free(sonic);
                dev_err(card->dev,
                        "unable to grab DDMA-C port at 0x%x-0x%x\n",
                        dmac, dmac + 0x10 - 1);
-               return -EBUSY;
+               goto e_busy;
        }
 
        pci_read_config_dword(pci, 0x40, &sonic->dmaa_port);
@@ -1395,15 +1391,23 @@ static int snd_sonicvibes_create(struct snd_card *card,
 #endif
        sonic->revision = snd_sonicvibes_in(sonic, SV_IREG_REVISION);
        err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, sonic, &ops);
-       if (err < 0) {
-               snd_sonicvibes_free(sonic);
-               return err;
-       }
+       if (err < 0)
+               goto free_sound_chip;
 
        snd_sonicvibes_proc_init(sonic);
 
        *rsonic = sonic;
        return 0;
+
+disable_device:
+       pci_disable_device(pci);
+       return err;
+
+e_busy:
+       err = -EBUSY;
+free_sound_chip:
+       snd_sonicvibes_free(sonic);
+       return err;
 }
 
 /*
-- 
2.15.0