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ASoC: rockchip: disable clock on error

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Disable the clocks in  rk_spdif_probe when an error occurs after one
of the clocks has been enabled previously.

Found by Linux Driver Verification project (linuxtesting.org).

Fixes: f874b80e15 ASoC: rockchip: Add rockchip SPDIF transceiver driver
Signed-off-by: Stefan Potyra <Stefan.Potyra@elektrobit.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Stefan Potyra 2017-12-06 16:03:24 +01:00 committed by Mark Brown
parent 4fbd8d194f
commit c7b92172a6
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 13 additions and 5 deletions
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18
sound/soc/rockchip/rockchip_spdif.c
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@ -322,26 +322,30 @@ static int rk_spdif_probe(struct platform_device *pdev)
spdif->mclk = devm_clk_get(&pdev->dev, "mclk");
if (IS_ERR(spdif->mclk)) {
dev_err(&pdev->dev, "Can't retrieve rk_spdif master clock\n");
return PTR_ERR(spdif->mclk);
ret = PTR_ERR(spdif->mclk);
goto err_disable_hclk;
}
ret = clk_prepare_enable(spdif->mclk);
if (ret) {
dev_err(spdif->dev, "clock enable failed %d\n", ret);
return ret;
goto err_disable_clocks;
}
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
regs = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(regs))
return PTR_ERR(regs);
if (IS_ERR(regs)) {
ret = PTR_ERR(regs);
goto err_disable_clocks;
}
spdif->regmap = devm_regmap_init_mmio_clk(&pdev->dev, "hclk", regs,
&rk_spdif_regmap_config);
if (IS_ERR(spdif->regmap)) {
dev_err(&pdev->dev,
"Failed to initialise managed register map\n");
return PTR_ERR(spdif->regmap);
ret = PTR_ERR(spdif->regmap);
goto err_disable_clocks;
}
spdif->playback_dma_data.addr = res->start + SPDIF_SMPDR;
@ -373,6 +377,10 @@ static int rk_spdif_probe(struct platform_device *pdev)
err_pm_runtime:
pm_runtime_disable(&pdev->dev);
err_disable_clocks:
clk_disable_unprepare(spdif->mclk);
err_disable_hclk:
clk_disable_unprepare(spdif->hclk);
return ret;
}