Messages in this thread Patch in this message | | | Date | Tue, 22 Nov 2022 22:45:09 +0100 | Subject | Re: [PATCH] interconnect: qcom: icc-rpmh: Fix an error handling path in qcom_icc_rpmh_probe() | From | Christophe JAILLET <> |
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Le 21/11/2022 à 08:42, Luca Weiss a écrit : > Hi Christophe, > > On Sun Nov 20, 2022 at 1:35 PM CET, Christophe JAILLET wrote: >> If of_platform_populate() fails, some resources need to be freed as already >> done in the other error handling paths. >> >> Fixes: 57eb14779dfd ("interconnect: qcom: icc-rpmh: Support child NoC device probe") > > I believe the same needs to be applied to icc-rpm.c.
Their are other issues in the error handling path of this file.
1) if (desc->has_bus_pd) { ret = dev_pm_domain_attach(dev, true); is unbalanced, both in the error handling path and in the remove function.
2) clk_bulk_prepare_enable() is not balanced in all error handling paths.
3) the same issue about error handling if of_platform_populate() fails.
These issues have been introduced in different commits.
Would you prefer several patches, each related to a given Fixes: tag, or one bigger "fix all error handling paths"?
Anyway, fixing the points above would require moving some code around. Usually I try to avoid it, because it is not always easy to see associated side effects.
CJ
> > Also there shouldn't be an empty line here between Fixes: and Signed-off-by: > > Regards > Luca > >> >> Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> >> --- >> drivers/interconnect/qcom/icc-rpmh.c | 7 +++++-- >> 1 file changed, 5 insertions(+), 2 deletions(-) >> >> diff --git a/drivers/interconnect/qcom/icc-rpmh.c b/drivers/interconnect/qcom/icc-rpmh.c >> index fd17291c61eb..5168bbf3d92f 100644 >> --- a/drivers/interconnect/qcom/icc-rpmh.c >> +++ b/drivers/interconnect/qcom/icc-rpmh.c >> @@ -235,8 +235,11 @@ int qcom_icc_rpmh_probe(struct platform_device *pdev) >> platform_set_drvdata(pdev, qp); >> >> /* Populate child NoC devices if any */ >> - if (of_get_child_count(dev->of_node) > 0) >> - return of_platform_populate(dev->of_node, NULL, NULL, dev); >> + if (of_get_child_count(dev->of_node) > 0) { >> + ret = of_platform_populate(dev->of_node, NULL, NULL, dev); >> + if (ret) >> + goto err; >> + } >> >> return 0; >> err: >> -- >> 2.34.1 > >
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