commit c75ed9f54ce8d349fee557f2b471a4d637ed2a6b upstream.

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@...>
Signed-off-by: Biju Das <biju.das.jz@...>
Link: https://lore.kernel.org/r/20220728092612.38858-1-biju.das.jz@bp.renesas.com
Signed-off-by: Mark Brown <broonie@...>
Signed-off-by: Biju Das <biju.das.jz@...>
---
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 ae57c7aa580e..4901a660ffc5 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;
}

--
2.25.1

Hi,

Hi!

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@...>
Signed-off-by: Biju Das <biju.das.jz@...>
Link:
https://lore.kernel.org/r/20220728092612.38858-1-biju.das.jz@bp.renesas.co
m
Signed-off-by: Mark Brown <broonie@...>
Signed-off-by: Biju Das <biju.das.jz@...>
---
sound/soc/sh/rz-ssi.c | 26 +++++++++++++++-----------
1 file changed, 15 insertions(+), 11 deletions(-)

Looks good to me this patch.
If there are no other comments, I can apply.

Test:

https://gitlab.com/cip-project/cip-kernel/linux-cip/-/pipelines/663548693

Looks ok to me:

Reviewed-by: Pavel Machek <pavel@...>

Best regards,
Pavel
--
DENX Software Engineering GmbH, Managing Director: Wolfgang Denk
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany

Hi all,