| Message ID | ec929c37c655ede7bb42e426354093c8a1377a0b.1668947686.git.christophe.jaillet@wanadoo.fr |
|---|---|
| State | New |
| Headers | show |
| Series | interconnect: qcom: icc-rpmh: Fix an error handling path in qcom_icc_rpmh_probe() | expand |
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. I'll give it a look and send a v2. 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 > >
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 > >
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:
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") Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> --- drivers/interconnect/qcom/icc-rpmh.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)