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Tue, 09 Jul 2019 11:00:31 -0700 (PDT) From: Nishka Dasgupta To: matthias.bgg@gmail.com, dmitry.torokhov@gmail.com, linux-input@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org Subject: [PATCH] input: keyboard: mtk-pmic-keys: Add of_node_put() before return Date: Tue, 9 Jul 2019 23:30:19 +0530 Message-Id: <20190709180019.14339-1-nishkadg.linux@gmail.com> X-Mailer: git-send-email 2.19.1 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190709_110032_825124_B5C934A5 X-CRM114-Status: GOOD ( 10.42 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Nishka Dasgupta Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Each iteration of for_each_child_of_node puts the previous node, but in the case of a return from the middle of the loop, there is no put, thus causing a memory leak. Hence add an of_node_put before the return in three places. Issue found with Coccinelle. Signed-off-by: Nishka Dasgupta --- drivers/input/keyboard/mtk-pmic-keys.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/input/keyboard/mtk-pmic-keys.c b/drivers/input/keyboard/mtk-pmic-keys.c index 746ff06eaf8d..62391d6c7da6 100644 --- a/drivers/input/keyboard/mtk-pmic-keys.c +++ b/drivers/input/keyboard/mtk-pmic-keys.c @@ -277,8 +277,10 @@ static int mtk_pmic_keys_probe(struct platform_device *pdev) keys->keys[index].regs = &mtk_pmic_regs->keys_regs[index]; keys->keys[index].irq = platform_get_irq(pdev, index); - if (keys->keys[index].irq < 0) + if (keys->keys[index].irq < 0) { + of_node_put(child); return keys->keys[index].irq; + } error = of_property_read_u32(child, "linux,keycodes", &keys->keys[index].keycode); @@ -286,6 +288,7 @@ static int mtk_pmic_keys_probe(struct platform_device *pdev) dev_err(keys->dev, "failed to read key:%d linux,keycode property: %d\n", index, error); + of_node_put(child); return error; } @@ -293,8 +296,10 @@ static int mtk_pmic_keys_probe(struct platform_device *pdev) keys->keys[index].wakeup = true; error = mtk_pmic_key_setup(keys, &keys->keys[index]); - if (error) + if (error) { + of_node_put(child); return error; + } index++; } -- 2.19.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel