linux-kernel - [PATCH 2/5] spi: lpspi: add NULL check when probe device

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Date:   Tue, 14 Jul 2020 15:52:48 +0800
From:   Clark Wang <xiaoning.wang@....com>
To:     broonie@...nel.org
Cc:     linux-spi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 2/5] spi: lpspi: add NULL check when probe device

Add a NULL check for device node and lpspi_platform_info when lpspi
device probe.

Signed-off-by: Clark Wang <xiaoning.wang@....com>
---
 drivers/spi/spi-fsl-lpspi.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/spi/spi-fsl-lpspi.c b/drivers/spi/spi-fsl-lpspi.c
index a1555bbc5e5a..ca43d93adf30 100644
--- a/drivers/spi/spi-fsl-lpspi.c
+++ b/drivers/spi/spi-fsl-lpspi.c
@@ -841,6 +841,11 @@ static int fsl_lpspi_probe(struct platform_device *pdev)
 	u32 temp;
 	bool is_slave;
 
+	if (!np && !lpspi_platform_info) {
+		dev_err(&pdev->dev, "can't get the platform data\n");
+		return -EINVAL;
+	}
+
 	is_slave = of_property_read_bool((&pdev->dev)->of_node, "spi-slave");
 	if (is_slave)
 		controller = spi_alloc_slave(&pdev->dev,
-- 
2.17.1