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ASoC: ti: omap-mcbsp: Fix an error handling path in 'asoc_mcbsp_probe()' 

[ Upstream commit 03990fd58d ]

If an error occurs after the call to 'omap_mcbsp_init()', the reference to
'mcbsp->fclk' must be decremented, as already done in the remove function.

This can be achieved easily by using the devm_ variant of 'clk_get()'
when the reference is taken in 'omap_mcbsp_init()'

This fixes the leak in the probe and has the side effect to simplify both
the error handling path of 'omap_mcbsp_init()' and the remove function.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Acked-by: Peter Ujfalusi <peter.ujflausi@ti.com>
Link: https://lore.kernel.org/r/20200512134325.252073-1-christophe.jaillet@wanadoo.fr
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5.4-rM2-2.2.x-imx-squashed
Christophe JAILLET 2020-05-12 15:43:25 +02:00 committed by Greg Kroah-Hartman
parent 5acfef9964
commit 5248114b9b
1 changed files with 2 additions and 6 deletions
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8
sound/soc/ti/omap-mcbsp.c
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@ -686,7 +686,7 @@ static int omap_mcbsp_init(struct platform_device *pdev)
mcbsp->dma_data[1].addr = omap_mcbsp_dma_reg_params(mcbsp,
SNDRV_PCM_STREAM_CAPTURE);
mcbsp->fclk = clk_get(&pdev->dev, "fck");
mcbsp->fclk = devm_clk_get(&pdev->dev, "fck");
if (IS_ERR(mcbsp->fclk)) {
ret = PTR_ERR(mcbsp->fclk);
dev_err(mcbsp->dev, "unable to get fck: %d\n", ret);
@ -711,7 +711,7 @@ static int omap_mcbsp_init(struct platform_device *pdev)
if (ret) {
dev_err(mcbsp->dev,
"Unable to create additional controls\n");
goto err_thres;
return ret;
}
}
@ -724,8 +724,6 @@ static int omap_mcbsp_init(struct platform_device *pdev)
err_st:
if (mcbsp->pdata->buffer_size)
sysfs_remove_group(&mcbsp->dev->kobj, &additional_attr_group);
err_thres:
clk_put(mcbsp->fclk);
return ret;
}
@ -1442,8 +1440,6 @@ static int asoc_mcbsp_remove(struct platform_device *pdev)
omap_mcbsp_st_cleanup(pdev);
clk_put(mcbsp->fclk);
return 0;
}