linux-kernel - [PATCH] spi: pxa2xx: Add missed security checks

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Message-Id: <20191017025058.31528-1-hslester96@gmail.com>
Date:   Thu, 17 Oct 2019 10:50:58 +0800
From:   Chuhong Yuan <hslester96@...il.com>
To:     unlisted-recipients:; (no To-header on input)
Cc:     Daniel Mack <daniel@...que.org>,
        Haojian Zhuang <haojian.zhuang@...il.com>,
        Robert Jarzmik <robert.jarzmik@...e.fr>,
        Mark Brown <broonie@...nel.org>,
        linux-arm-kernel@...ts.infradead.org, linux-spi@...r.kernel.org,
        linux-kernel@...r.kernel.org, Chuhong Yuan <hslester96@...il.com>
Subject: [PATCH] spi: pxa2xx: Add missed security checks

pxa2xx_spi_init_pdata misses checks for devm_clk_get and
platform_get_irq.
Add checks for them to fix the bugs.

Signed-off-by: Chuhong Yuan <hslester96@...il.com>
---
 drivers/spi/spi-pxa2xx.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c
index bb6a14d1ab0f..2e73d75a6ac5 100644
--- a/drivers/spi/spi-pxa2xx.c
+++ b/drivers/spi/spi-pxa2xx.c
@@ -1565,7 +1565,13 @@ pxa2xx_spi_init_pdata(struct platform_device *pdev)
 #endif
 
 	ssp->clk = devm_clk_get(&pdev->dev, NULL);
+	if (IS_ERR(ssp->clk))
+		return NULL;
+
 	ssp->irq = platform_get_irq(pdev, 0);
+	if (ssp->irq < 0)
+		return NULL;
+
 	ssp->type = type;
 	ssp->pdev = pdev;
 	ssp->port_id = pxa2xx_spi_get_port_id(adev);
-- 
2.20.1