From: Pan Bian <bianpan2016@163.com>
Date: Thu, 21 Jan 2021 11:49:07 +0000 (-0800)
Subject: bus: qcom: Put child node before return
X-Git-Tag: v4.9.269~132
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=a6191e91c10e50bd51db65a00e03d02b6b0cf8c4;p=thirdparty%2Fkernel%2Fstable.git

bus: qcom: Put child node before return

[ Upstream commit ac6ad7c2a862d682bb584a4bc904d89fa7721af8 ]

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.

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Fixes: 335a12754808 ("bus: qcom: add EBI2 driver")
Signed-off-by: Pan Bian <bianpan2016@163.com>
Link: https://lore.kernel.org/r/20210121114907.109267-1-bianpan2016@163.com
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/drivers/bus/qcom-ebi2.c b/drivers/bus/qcom-ebi2.c
index a6444244c4111..bfb67aa00becc 100644
--- a/drivers/bus/qcom-ebi2.c
+++ b/drivers/bus/qcom-ebi2.c
@@ -357,8 +357,10 @@ 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,