linux-kernel - [PATCH 5.17 0760/1126] clk: tegra: tegra124-emc: Fix missing put_device() call in emc_ensure_emc

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Date:   Tue,  5 Apr 2022 09:25:07 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Miaoqian Lin <linmq006@...il.com>,
        Thierry Reding <treding@...dia.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.17 0760/1126] clk: tegra: tegra124-emc: Fix missing put_device() call in emc_ensure_emc_driver

From: Miaoqian Lin <linmq006@...il.com>

[ Upstream commit 6d6ef58c2470da85a99119f74d34216c8074b9f0 ]

The reference taken by 'of_find_device_by_node()' must be released when
not needed anymore.
Add the corresponding 'put_device()' in the error handling path.

Fixes: 2db04f16b589 ("clk: tegra: Add EMC clock driver")
Signed-off-by: Miaoqian Lin <linmq006@...il.com>
Acked-by: Thierry Reding <treding@...dia.com>
Link: https://lore.kernel.org/r/20220112104501.30655-1-linmq006@gmail.com
Signed-off-by: Stephen Boyd <sboyd@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/clk/tegra/clk-tegra124-emc.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/clk/tegra/clk-tegra124-emc.c b/drivers/clk/tegra/clk-tegra124-emc.c
index 74c1d894cca8..219c80653dbd 100644
--- a/drivers/clk/tegra/clk-tegra124-emc.c
+++ b/drivers/clk/tegra/clk-tegra124-emc.c
@@ -198,6 +198,7 @@ static struct tegra_emc *emc_ensure_emc_driver(struct tegra_clk_emc *tegra)
 
 	tegra->emc = platform_get_drvdata(pdev);
 	if (!tegra->emc) {
+		put_device(&pdev->dev);
 		pr_err("%s: cannot find EMC driver\n", __func__);
 		return NULL;
 	}
-- 
2.34.1