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ASoC: ac97c.c: use devm_ functions

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The various devm_ functions allocate memory that is released when a driver
detaches.  This patch uses devm_kzalloc, devm_request_mem_region and
devm_ioremap for data that is allocated in the probe function of a platform
device and is only freed in the remove function.

Signed-off-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Julia Lawall 2011-12-29 17:51:29 +01:00 committed by Mark Brown
parent be547dd172
commit 6065abf5ce
1 changed files with 13 additions and 27 deletions
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40
sound/soc/au1x/ac97c.c
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@ -229,35 +229,34 @@ static int __devinit au1xac97c_drvprobe(struct platform_device *pdev)
struct resource *iores, *dmares;
struct au1xpsc_audio_data *ctx;
ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
ctx = devm_kzalloc(&pdev->dev, sizeof(*ctx), GFP_KERNEL);
if (!ctx)
return -ENOMEM;
mutex_init(&ctx->lock);
iores = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!iores) {
ret = -ENODEV;
goto out0;
}
if (!iores)
return -ENODEV;
ret = -EBUSY;
if (!request_mem_region(iores->start, resource_size(iores),
pdev->name))
goto out0;
if (!devm_request_mem_region(&pdev->dev, iores->start,
resource_size(iores),
pdev->name))
return -EBUSY;
ctx->mmio = ioremap_nocache(iores->start, resource_size(iores));
ctx->mmio = devm_ioremap_nocache(&pdev->dev, iores->start,
resource_size(iores));
if (!ctx->mmio)
goto out1;
return -EBUSY;
dmares = platform_get_resource(pdev, IORESOURCE_DMA, 0);
if (!dmares)
goto out2;
return -EBUSY;
ctx->dmaids[SNDRV_PCM_STREAM_PLAYBACK] = dmares->start;
dmares = platform_get_resource(pdev, IORESOURCE_DMA, 1);
if (!dmares)
goto out2;
return -EBUSY;
ctx->dmaids[SNDRV_PCM_STREAM_CAPTURE] = dmares->start;
/* switch it on */
@ -271,33 +270,20 @@ static int __devinit au1xac97c_drvprobe(struct platform_device *pdev)
ret = snd_soc_register_dai(&pdev->dev, &au1xac97c_dai_driver);
if (ret)
goto out2;
return ret;
ac97c_workdata = ctx;
return 0;
out2:
iounmap(ctx->mmio);
out1:
release_mem_region(iores->start, resource_size(iores));
out0:
kfree(ctx);
return ret;
}
static int __devexit au1xac97c_drvremove(struct platform_device *pdev)
{
struct au1xpsc_audio_data *ctx = platform_get_drvdata(pdev);
struct resource *r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
snd_soc_unregister_dai(&pdev->dev);
WR(ctx, AC97_ENABLE, EN_D); /* clock off, disable */
iounmap(ctx->mmio);
release_mem_region(r->start, resource_size(r));
kfree(ctx);
ac97c_workdata = NULL; /* MDEV */
return 0;