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From: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
To: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>,
	Nicolas Ferre <nicolas.ferre@microchip.com>,
	Alexandre Belloni <alexandre.belloni@bootlin.com>,
	Ludovic Desroches <ludovic.desroches@microchip.com>,
	linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org
Subject: [PATCH] memory: atmel-sdramc: check of_device_get_match_data() return value
Date: Wed,  7 Apr 2021 17:44:47 +0200	[thread overview]
Message-ID: <20210407154447.70540-1-krzysztof.kozlowski@canonical.com> (raw)

If the driver is probed, the of_device_get_match_data() should not
return NULL, however for sanity check its return value.

Addresses-Coverity: Dereference null return value
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
---
 drivers/memory/atmel-sdramc.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/memory/atmel-sdramc.c b/drivers/memory/atmel-sdramc.c
index 9c49d00c2a96..e09b2617f63d 100644
--- a/drivers/memory/atmel-sdramc.c
+++ b/drivers/memory/atmel-sdramc.c
@@ -45,6 +45,8 @@ static int atmel_ramc_probe(struct platform_device *pdev)
 	struct clk *clk;
 
 	caps = of_device_get_match_data(&pdev->dev);
+	if (!caps)
+		return -EINVAL;
 
 	if (caps->has_ddrck) {
 		clk = devm_clk_get(&pdev->dev, "ddrck");
-- 
2.25.1


WARNING: multiple messages have this Message-ID (diff)
From: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
To: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>,
	Nicolas Ferre <nicolas.ferre@microchip.com>,
	Alexandre Belloni <alexandre.belloni@bootlin.com>,
	Ludovic Desroches <ludovic.desroches@microchip.com>,
	linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org
Subject: [PATCH] memory: atmel-sdramc: check of_device_get_match_data() return value
Date: Wed,  7 Apr 2021 17:44:47 +0200	[thread overview]
Message-ID: <20210407154447.70540-1-krzysztof.kozlowski@canonical.com> (raw)

If the driver is probed, the of_device_get_match_data() should not
return NULL, however for sanity check its return value.

Addresses-Coverity: Dereference null return value
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
---
 drivers/memory/atmel-sdramc.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/memory/atmel-sdramc.c b/drivers/memory/atmel-sdramc.c
index 9c49d00c2a96..e09b2617f63d 100644
--- a/drivers/memory/atmel-sdramc.c
+++ b/drivers/memory/atmel-sdramc.c
@@ -45,6 +45,8 @@ static int atmel_ramc_probe(struct platform_device *pdev)
 	struct clk *clk;
 
 	caps = of_device_get_match_data(&pdev->dev);
+	if (!caps)
+		return -EINVAL;
 
 	if (caps->has_ddrck) {
 		clk = devm_clk_get(&pdev->dev, "ddrck");
-- 
2.25.1


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             reply	other threads:[~2021-04-07 15:44 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-07 15:44 Krzysztof Kozlowski [this message]
2021-04-07 15:44 ` [PATCH] memory: atmel-sdramc: check of_device_get_match_data() return value Krzysztof Kozlowski
2021-04-07 16:19 ` Alexandre Belloni
2021-04-07 16:19   ` Alexandre Belloni
2021-04-07 16:55   ` Krzysztof Kozlowski
2021-04-07 16:55     ` Krzysztof Kozlowski

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