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Message-ID: <201203261600.17787.hartleys@visionengravers.com>
Date: Mon, 26 Mar 2012 16:00:17 -0700
From: H Hartley Sweeten <hartleys@...ionengravers.com>
To: Linux Kernel <linux-kernel@...r.kernel.org>
CC: <alsa-devel@...a-project.org>, <mika.westerberg@....fi>,
<lrg@...com>, <broonie@...nsource.wolfsonmicro.com>,
<perex@...ex.cz>, <tiwai@...e.de>, <vinod.koul@...el.com>
Subject: [PATCH] ASoC: ep93xx-i2s: use devm_* helpers to cleanup probe
Use the devm_* helpers to cleanup the probe routine. This also eliminates
having to carry the mem value in the private data for the remove.
Signed-off-by: H Hartley Sweeten <hsweeten@...ionengravers.com>
Cc: Mika Westerberg <mika.westerberg@....fi>
Cc: Liam Girdwood <lrg@...com>
Cc: Mark Brown <broonie@...nsource.wolfsonmicro.com>
Cc: Jaroslav Kysela <perex@...ex.cz>
CC: Takashi Iwai <tiwai@...e.de>
Cc: Vinod Koul <vinod.koul@...el.com>
---
diff --git a/sound/soc/ep93xx/ep93xx-i2s.c b/sound/soc/ep93xx/ep93xx-i2s.c
index f7a6234..8df8f6d 100644
--- a/sound/soc/ep93xx/ep93xx-i2s.c
+++ b/sound/soc/ep93xx/ep93xx-i2s.c
@@ -63,7 +63,6 @@ struct ep93xx_i2s_info {
struct clk *sclk;
struct clk *lrclk;
struct ep93xx_pcm_dma_params *dma_params;
- struct resource *mem;
void __iomem *regs;
};
@@ -373,38 +372,22 @@ static int ep93xx_i2s_probe(struct platform_device *pdev)
struct resource *res;
int err;
- info = kzalloc(sizeof(struct ep93xx_i2s_info), GFP_KERNEL);
- if (!info) {
- err = -ENOMEM;
- goto fail;
- }
-
- dev_set_drvdata(&pdev->dev, info);
- info->dma_params = ep93xx_i2s_dma_params;
+ info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
+ if (!info)
+ return -ENOMEM;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res) {
- err = -ENODEV;
- goto fail_free_info;
- }
+ if (!res)
+ return -ENODEV;
- info->mem = request_mem_region(res->start, resource_size(res),
- pdev->name);
- if (!info->mem) {
- err = -EBUSY;
- goto fail_free_info;
- }
-
- info->regs = ioremap(info->mem->start, resource_size(info->mem));
- if (!info->regs) {
- err = -ENXIO;
- goto fail_release_mem;
- }
+ info->regs = devm_request_and_ioremap(&pdev->dev, res);
+ if (!info->regs)
+ return -ENXIO;
info->mclk = clk_get(&pdev->dev, "mclk");
if (IS_ERR(info->mclk)) {
err = PTR_ERR(info->mclk);
- goto fail_unmap_mem;
+ goto fail;
}
info->sclk = clk_get(&pdev->dev, "sclk");
@@ -419,6 +402,9 @@ static int ep93xx_i2s_probe(struct platform_device *pdev)
goto fail_put_sclk;
}
+ dev_set_drvdata(&pdev->dev, info);
+ info->dma_params = ep93xx_i2s_dma_params;
+
err = snd_soc_register_dai(&pdev->dev, &ep93xx_i2s_dai);
if (err)
goto fail_put_lrclk;
@@ -426,17 +412,12 @@ static int ep93xx_i2s_probe(struct platform_device *pdev)
return 0;
fail_put_lrclk:
+ dev_set_drvdata(&pdev->dev, NULL);
clk_put(info->lrclk);
fail_put_sclk:
clk_put(info->sclk);
fail_put_mclk:
clk_put(info->mclk);
-fail_unmap_mem:
- iounmap(info->regs);
-fail_release_mem:
- release_mem_region(info->mem->start, resource_size(info->mem));
-fail_free_info:
- kfree(info);
fail:
return err;
}
@@ -446,12 +427,10 @@ static int __devexit ep93xx_i2s_remove(struct platform_device *pdev)
struct ep93xx_i2s_info *info = dev_get_drvdata(&pdev->dev);
snd_soc_unregister_dai(&pdev->dev);
+ dev_set_drvdata(&pdev->dev, NULL);
clk_put(info->lrclk);
clk_put(info->sclk);
clk_put(info->mclk);
- iounmap(info->regs);
- release_mem_region(info->mem->start, resource_size(info->mem));
- kfree(info);
return 0;
}
--
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