* [PATCH] bus: qcom: Put child node before return
@ 2021-01-21 11:49 Pan Bian
2021-01-22 22:47 ` Linus Walleij
0 siblings, 1 reply; 4+ messages in thread
From: Pan Bian @ 2021-01-21 11:49 UTC (permalink / raw)
To: Andy Gross, Bjorn Andersson, Linus Walleij
Cc: linux-arm-msm, linux-kernel, Pan Bian
Put child node before return to fix potential reference count leak.
Generally, the reference count of child is incremented and decremented
automatically in the macro for_each_available_child_of_node() and should
be decremented manually if the loop is broken in loop body.
Fixes: 335a12754808 ("bus: qcom: add EBI2 driver")
Signed-off-by: Pan Bian <bianpan2016@163.com>
---
drivers/bus/qcom-ebi2.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/bus/qcom-ebi2.c b/drivers/bus/qcom-ebi2.c
index 03ddcf426887..0b8f53a688b8 100644
--- a/drivers/bus/qcom-ebi2.c
+++ b/drivers/bus/qcom-ebi2.c
@@ -353,8 +353,10 @@ static int qcom_ebi2_probe(struct platform_device *pdev)
/* Figure out the chipselect */
ret = of_property_read_u32(child, "reg", &csindex);
- if (ret)
+ if (ret) {
+ of_node_put(child);
return ret;
+ }
if (csindex > 5) {
dev_err(dev,
--
2.17.1
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH] bus: qcom: Put child node before return
2021-01-21 11:49 [PATCH] bus: qcom: Put child node before return Pan Bian
@ 2021-01-22 22:47 ` Linus Walleij
2021-01-22 23:19 ` Bjorn Andersson
0 siblings, 1 reply; 4+ messages in thread
From: Linus Walleij @ 2021-01-22 22:47 UTC (permalink / raw)
To: Pan Bian; +Cc: Andy Gross, Bjorn Andersson, MSM, linux-kernel
On Thu, Jan 21, 2021 at 12:49 PM Pan Bian <bianpan2016@163.com> wrote:
> Put child node before return to fix potential reference count leak.
> Generally, the reference count of child is incremented and decremented
> automatically in the macro for_each_available_child_of_node() and should
> be decremented manually if the loop is broken in loop body.
>
> Fixes: 335a12754808 ("bus: qcom: add EBI2 driver")
> Signed-off-by: Pan Bian <bianpan2016@163.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Please submit this patch for inclusion through the ARM SoC tree.
Yours,
Linus Walleij
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] bus: qcom: Put child node before return
2021-01-22 22:47 ` Linus Walleij
@ 2021-01-22 23:19 ` Bjorn Andersson
2021-01-23 23:00 ` Linus Walleij
0 siblings, 1 reply; 4+ messages in thread
From: Bjorn Andersson @ 2021-01-22 23:19 UTC (permalink / raw)
To: Linus Walleij; +Cc: Pan Bian, Andy Gross, MSM, linux-kernel
On Fri 22 Jan 16:47 CST 2021, Linus Walleij wrote:
> On Thu, Jan 21, 2021 at 12:49 PM Pan Bian <bianpan2016@163.com> wrote:
>
> > Put child node before return to fix potential reference count leak.
> > Generally, the reference count of child is incremented and decremented
> > automatically in the macro for_each_available_child_of_node() and should
> > be decremented manually if the loop is broken in loop body.
> >
> > Fixes: 335a12754808 ("bus: qcom: add EBI2 driver")
> > Signed-off-by: Pan Bian <bianpan2016@163.com>
>
> Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
>
> Please submit this patch for inclusion through the ARM SoC tree.
>
Any objections to me picking it in the Qualcomm tree? Or that's what you
indirectly meant?
Regards,
Bjorn
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] bus: qcom: Put child node before return
2021-01-22 23:19 ` Bjorn Andersson
@ 2021-01-23 23:00 ` Linus Walleij
0 siblings, 0 replies; 4+ messages in thread
From: Linus Walleij @ 2021-01-23 23:00 UTC (permalink / raw)
To: Bjorn Andersson; +Cc: Pan Bian, Andy Gross, MSM, linux-kernel
On Sat, Jan 23, 2021 at 12:19 AM Bjorn Andersson
<bjorn.andersson@linaro.org> wrote:
> On Fri 22 Jan 16:47 CST 2021, Linus Walleij wrote:
>
> > On Thu, Jan 21, 2021 at 12:49 PM Pan Bian <bianpan2016@163.com> wrote:
> >
> > > Put child node before return to fix potential reference count leak.
> > > Generally, the reference count of child is incremented and decremented
> > > automatically in the macro for_each_available_child_of_node() and should
> > > be decremented manually if the loop is broken in loop body.
> > >
> > > Fixes: 335a12754808 ("bus: qcom: add EBI2 driver")
> > > Signed-off-by: Pan Bian <bianpan2016@163.com>
> >
> > Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
> >
> > Please submit this patch for inclusion through the ARM SoC tree.
> >
>
> Any objections to me picking it in the Qualcomm tree? Or that's what you
> indirectly meant?
Kind-of-sort-of :D
Apply it to the Qualcomm tree!
Yours,
Linus Walleij
^ permalink raw reply [flat|nested] 4+ messages in thread
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2021-01-21 11:49 [PATCH] bus: qcom: Put child node before return Pan Bian
2021-01-22 22:47 ` Linus Walleij
2021-01-22 23:19 ` Bjorn Andersson
2021-01-23 23:00 ` Linus Walleij
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