[PATCH AUTOSEL 5.19 02/38] ASoC: sh: rz-ssi: Improve error handling in rz_ssi_probe() error path

Sasha Levin
2022-08-25T01:34:20Z

From: Biju Das <biju.das.jz@bp.renesas.com>

[ Upstream commit c75ed9f54ce8d349fee557f2b471a4d637ed2a6b ]

We usually do cleanup in reverse order of init. Currently in case of
error rz_ssi_release_dma_channels() done in the reverse order. This
patch improves error handling in rz_ssi_probe() error path.

While at it, use "goto cleanup" style to reduce code duplication.

Reported-by: Pavel Machek <pavel@denx.de>
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Link: https://lore.kernel.org/r/20220728092612.38858-1-biju.das.jz@bp.renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
sound/soc/sh/rz-ssi.c | 26 +++++++++++++++-----------
1 file changed, 15 insertions(+), 11 deletions(-)

diff --git a/sound/soc/sh/rz-ssi.c b/sound/soc/sh/rz-ssi.c
index e392de7a262e..3d74acffec11 100644
--- a/sound/soc/sh/rz-ssi.c
+++ b/sound/soc/sh/rz-ssi.c
@@ -1016,32 +1016,36 @@ static int rz_ssi_probe(struct platform_device *pdev)

ssi->rstc = devm_reset_control_get_exclusive(&pdev->dev, NULL);
if (IS_ERR(ssi->rstc)) {
- rz_ssi_release_dma_channels(ssi);
- return PTR_ERR(ssi->rstc);
+ ret = PTR_ERR(ssi->rstc);
+ goto err_reset;
}

reset_control_deassert(ssi->rstc);
pm_runtime_enable(&pdev->dev);
ret = pm_runtime_resume_and_get(&pdev->dev);
if (ret < 0) {
- rz_ssi_release_dma_channels(ssi);
- pm_runtime_disable(ssi->dev);
- reset_control_assert(ssi->rstc);
- return dev_err_probe(ssi->dev, ret, "pm_runtime_resume_and_get failed\n");
+ dev_err(&pdev->dev, "pm_runtime_resume_and_get failed\n");
+ goto err_pm;
}

ret = devm_snd_soc_register_component(&pdev->dev, &rz_ssi_soc_component,
rz_ssi_soc_dai,
ARRAY_SIZE(rz_ssi_soc_dai));
if (ret < 0) {
- rz_ssi_release_dma_channels(ssi);
-
- pm_runtime_put(ssi->dev);
- pm_runtime_disable(ssi->dev);
- reset_control_assert(ssi->rstc);
dev_err(&pdev->dev, "failed to register snd component\n");
+ goto err_snd_soc;
}

+ return 0;
+
+err_snd_soc:
+ pm_runtime_put(ssi->dev);
+err_pm:
+ pm_runtime_disable(ssi->dev);
+ reset_control_assert(ssi->rstc);
+err_reset:
+ rz_ssi_release_dma_channels(ssi);
+
return ret;
}

--
2.35.1