[alsa-devel] Applied "ASoC: samsung: pcm: Conversion to use devm_ioremap_resource()" to the asoc tree

[Mark Brown]

The patch

   ASoC: samsung: pcm: Conversion to use devm_ioremap_resource()

has been applied to the asoc tree at

   git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git 

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.  

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark

>From d8dbb4b327a84a7d373c8c4bf173bcab22f102ff Mon Sep 17 00:00:00 2001
From: Sylwester Nawrocki <s.nawrocki at samsung.com>
Date: Wed, 2 Nov 2016 12:28:17 +0100
Subject: [PATCH] ASoC: samsung: pcm: Conversion to use devm_ioremap_resource()

This simplifies the code a bit and removes a hard coded IO memory
region size.

Signed-off-by: Sylwester Nawrocki <s.nawrocki at samsung.com>
Signed-off-by: Mark Brown <broonie at kernel.org>
---
 sound/soc/samsung/pcm.c | 60 +++++++++++++------------------------------------
 1 file changed, 16 insertions(+), 44 deletions(-)

diff --git a/sound/soc/samsung/pcm.c b/sound/soc/samsung/pcm.c
index c484985812ed..d50a6377c23d 100644
--- a/sound/soc/samsung/pcm.c
+++ b/sound/soc/samsung/pcm.c
@@ -499,13 +499,6 @@ static int s3c_pcm_dev_probe(struct platform_device *pdev)
 
 	pcm_pdata = pdev->dev.platform_data;
 
-	/* Check for availability of necessary resource */
-	mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!mem_res) {
-		dev_err(&pdev->dev, "Unable to get register resource\n");
-		return -ENXIO;
-	}
-
 	if (pcm_pdata && pcm_pdata->cfg_gpio && pcm_pdata->cfg_gpio(pdev)) {
 		dev_err(&pdev->dev, "Unable to configure gpio\n");
 		return -EINVAL;
@@ -519,36 +512,26 @@ static int s3c_pcm_dev_probe(struct platform_device *pdev)
 	/* Default is 128fs */
 	pcm->sclk_per_fs = 128;
 
+	mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	pcm->regs = devm_ioremap_resource(&pdev->dev, mem_res);
+	if (IS_ERR(pcm->regs))
+		return PTR_ERR(pcm->regs);
+
 	pcm->cclk = devm_clk_get(&pdev->dev, "audio-bus");
 	if (IS_ERR(pcm->cclk)) {
-		dev_err(&pdev->dev, "failed to get audio-bus\n");
-		ret = PTR_ERR(pcm->cclk);
-		goto err1;
+		dev_err(&pdev->dev, "failed to get audio-bus clock\n");
+		return PTR_ERR(pcm->cclk);
 	}
 	clk_prepare_enable(pcm->cclk);
 
 	/* record our pcm structure for later use in the callbacks */
 	dev_set_drvdata(&pdev->dev, pcm);
 
-	if (!request_mem_region(mem_res->start,
-				resource_size(mem_res), "samsung-pcm")) {
-		dev_err(&pdev->dev, "Unable to request register region\n");
-		ret = -EBUSY;
-		goto err2;
-	}
-
-	pcm->regs = ioremap(mem_res->start, 0x100);
-	if (pcm->regs == NULL) {
-		dev_err(&pdev->dev, "cannot ioremap registers\n");
-		ret = -ENXIO;
-		goto err3;
-	}
-
 	pcm->pclk = devm_clk_get(&pdev->dev, "pcm");
 	if (IS_ERR(pcm->pclk)) {
-		dev_err(&pdev->dev, "failed to get pcm_clock\n");
-		ret = -ENOENT;
-		goto err4;
+		dev_err(&pdev->dev, "failed to get pcm clock\n");
+		ret = PTR_ERR(pcm->pclk);
+		goto err_dis_cclk;
 	}
 	clk_prepare_enable(pcm->pclk);
 
@@ -569,7 +552,7 @@ static int s3c_pcm_dev_probe(struct platform_device *pdev)
 						 NULL, NULL);
 	if (ret) {
 		dev_err(&pdev->dev, "failed to get register DMA: %d\n", ret);
-		goto err5;
+		goto err_dis_pclk;
 	}
 
 	pm_runtime_enable(&pdev->dev);
@@ -578,36 +561,25 @@ static int s3c_pcm_dev_probe(struct platform_device *pdev)
 					 &s3c_pcm_dai[pdev->id], 1);
 	if (ret != 0) {
 		dev_err(&pdev->dev, "failed to get register DAI: %d\n", ret);
-		goto err6;
+		goto err_dis_pm;
 	}
 
 	return 0;
-err6:
+
+err_dis_pm:
 	pm_runtime_disable(&pdev->dev);
-err5:
+err_dis_pclk:
 	clk_disable_unprepare(pcm->pclk);
-err4:
-	iounmap(pcm->regs);
-err3:
-	release_mem_region(mem_res->start, resource_size(mem_res));
-err2:
+err_dis_cclk:
 	clk_disable_unprepare(pcm->cclk);
-err1:
 	return ret;
 }
 
 static int s3c_pcm_dev_remove(struct platform_device *pdev)
 {
 	struct s3c_pcm_info *pcm = &s3c_pcm[pdev->id];
-	struct resource *mem_res;
 
 	pm_runtime_disable(&pdev->dev);
-
-	iounmap(pcm->regs);
-
-	mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	release_mem_region(mem_res->start, resource_size(mem_res));
-
 	clk_disable_unprepare(pcm->cclk);
 	clk_disable_unprepare(pcm->pclk);
 
-- 
2.10.1