linux-kernel - [PATCH 5.7 197/393] mmc: sdhci-of-arasan: Add missed checks for devm_clk

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Message-Id: <20200817143829.176118153@linuxfoundation.org>
Date:   Mon, 17 Aug 2020 17:14:07 +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, Chuhong Yuan <hslester96@...il.com>,
        Douglas Anderson <dianders@...omium.org>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.7 197/393] mmc: sdhci-of-arasan: Add missed checks for devm_clk_register()

From: Chuhong Yuan <hslester96@...il.com>

[ Upstream commit c99e1d0c91ac8d7db3062ea1af315f21295701d7 ]

These functions do not check the return value of devm_clk_register():
  - sdhci_arasan_register_sdcardclk()
  - sdhci_arasan_register_sampleclk()

Therefore, add the missed checks to fix them.

Fixes: c390f2110adf1 ("mmc: sdhci-of-arasan: Add ability to export card clock")
Signed-off-by: Chuhong Yuan <hslester96@...il.com>
Reviewed-by: Douglas Anderson <dianders@...omium.org>
Link: https://lore.kernel.org/r/20200608162226.3259186-1-hslester96@gmail.com
Signed-off-by: Ulf Hansson <ulf.hansson@...aro.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/mmc/host/sdhci-of-arasan.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/mmc/host/sdhci-of-arasan.c b/drivers/mmc/host/sdhci-of-arasan.c
index d4905c106c060..28091d3f704b7 100644
--- a/drivers/mmc/host/sdhci-of-arasan.c
+++ b/drivers/mmc/host/sdhci-of-arasan.c
@@ -1020,6 +1020,8 @@ sdhci_arasan_register_sdcardclk(struct sdhci_arasan_data *sdhci_arasan,
 	clk_data->sdcardclk_hw.init = &sdcardclk_init;
 	clk_data->sdcardclk =
 		devm_clk_register(dev, &clk_data->sdcardclk_hw);
+	if (IS_ERR(clk_data->sdcardclk))
+		return PTR_ERR(clk_data->sdcardclk);
 	clk_data->sdcardclk_hw.init = NULL;
 
 	ret = of_clk_add_provider(np, of_clk_src_simple_get,
@@ -1072,6 +1074,8 @@ sdhci_arasan_register_sampleclk(struct sdhci_arasan_data *sdhci_arasan,
 	clk_data->sampleclk_hw.init = &sampleclk_init;
 	clk_data->sampleclk =
 		devm_clk_register(dev, &clk_data->sampleclk_hw);
+	if (IS_ERR(clk_data->sampleclk))
+		return PTR_ERR(clk_data->sampleclk);
 	clk_data->sampleclk_hw.init = NULL;
 
 	ret = of_clk_add_provider(np, of_clk_src_simple_get,
-- 
2.25.1