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Subject[PATCH] ASoC: ux500: adjust devm usage
Date
The explicit call to devm_regulator_put in the probe and remove functions
does not seem to be necessary. In particular, the functions
prcmu_qos_remove_requirement and ux500_msp_i2s_cleanup_msp in the remove
function seem to do nothing that can interfere with devm_regulator_put,
making it safe to allow devm_regulator_put to occur after the end of the
remove function.

Convert the calls to clk_get to devm_clk_get, and remove the corresponding
calls to clk_put in the probe and remove functions.

Replace various gotos by direct returns, and drop unneeded labels.

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>

---
sound/soc/ux500/ux500_msp_dai.c | 29 ++++++++++-------------------
1 file changed, 10 insertions(+), 19 deletions(-)

diff --git a/sound/soc/ux500/ux500_msp_dai.c b/sound/soc/ux500/ux500_msp_dai.c
index 978f2d7..f5df08d 100644
--- a/sound/soc/ux500/ux500_msp_dai.c
+++ b/sound/soc/ux500/ux500_msp_dai.c
@@ -773,20 +773,22 @@ static int ux500_msp_drv_probe(struct platform_device *pdev)
}
prcmu_qos_add_requirement(PRCMU_QOS_APE_OPP, (char *)pdev->name, 50);

- drvdata->pclk = clk_get(&pdev->dev, "apb_pclk");
+ drvdata->pclk = devm_clk_get(&pdev->dev, "apb_pclk");
if (IS_ERR(drvdata->pclk)) {
ret = (int)PTR_ERR(drvdata->pclk);
- dev_err(&pdev->dev, "%s: ERROR: clk_get of pclk failed (%d)!\n",
+ dev_err(&pdev->dev,
+ "%s: ERROR: devm_clk_get of pclk failed (%d)!\n",
__func__, ret);
- goto err_pclk;
+ return ret;
}

- drvdata->clk = clk_get(&pdev->dev, NULL);
+ drvdata->clk = devm_clk_get(&pdev->dev, NULL);
if (IS_ERR(drvdata->clk)) {
ret = (int)PTR_ERR(drvdata->clk);
- dev_err(&pdev->dev, "%s: ERROR: clk_get failed (%d)!\n",
+ dev_err(&pdev->dev,
+ "%s: ERROR: devm_clk_get failed (%d)!\n",
__func__, ret);
- goto err_clk;
+ return ret;
}

ret = ux500_msp_i2s_init_msp(pdev, &drvdata->msp,
@@ -795,7 +797,7 @@ static int ux500_msp_drv_probe(struct platform_device *pdev)
dev_err(&pdev->dev,
"%s: ERROR: Failed to init MSP-struct (%d)!",
__func__, ret);
- goto err_init_msp;
+ return ret;
}
dev_set_drvdata(&pdev->dev, drvdata);

@@ -804,7 +806,7 @@ static int ux500_msp_drv_probe(struct platform_device *pdev)
if (ret < 0) {
dev_err(&pdev->dev, "Error: %s: Failed to register MSP%d!\n",
__func__, drvdata->msp->id);
- goto err_init_msp;
+ return ret;
}

ret = ux500_pcm_register_platform(pdev);
@@ -819,13 +821,6 @@ static int ux500_msp_drv_probe(struct platform_device *pdev)

err_reg_plat:
snd_soc_unregister_component(&pdev->dev);
-err_init_msp:
- clk_put(drvdata->clk);
-err_clk:
- clk_put(drvdata->pclk);
-err_pclk:
- devm_regulator_put(drvdata->reg_vape);
-
return ret;
}

@@ -837,12 +832,8 @@ static int ux500_msp_drv_remove(struct platform_device *pdev)

snd_soc_unregister_component(&pdev->dev);

- devm_regulator_put(drvdata->reg_vape);
prcmu_qos_remove_requirement(PRCMU_QOS_APE_OPP, "ux500_msp_i2s");

- clk_put(drvdata->clk);
- clk_put(drvdata->pclk);
-
ux500_msp_i2s_cleanup_msp(pdev, drvdata->msp);

return 0;


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