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51 lines
1.5 KiB
Diff
51 lines
1.5 KiB
Diff
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From bd02decd1ad7cc883ce388e769a34a3c402b90c4 Mon Sep 17 00:00:00 2001
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From: Brian Norris <computersforpeace@gmail.com>
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Date: Mon, 16 Nov 2015 10:45:30 -0800
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Subject: [PATCH 080/113] mtd: fsl-quadspi: possible NULL dereference
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It is theoretically possible to probe this driver without a matching
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device tree, so let's guard against this.
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Also, use the of_device_get_match_data() helper to make this a bit
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simpler.
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Coverity complained about this one.
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Signed-off-by: Brian Norris <computersforpeace@gmail.com>
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Acked-by: Han xu <han.xu@freescale.com>
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---
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drivers/mtd/spi-nor/fsl-quadspi.c | 8 ++++----
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1 file changed, 4 insertions(+), 4 deletions(-)
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--- a/drivers/mtd/spi-nor/fsl-quadspi.c
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+++ b/drivers/mtd/spi-nor/fsl-quadspi.c
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@@ -269,7 +269,7 @@ struct fsl_qspi {
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struct clk *clk, *clk_en;
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struct device *dev;
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struct completion c;
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- struct fsl_qspi_devtype_data *devtype_data;
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+ const struct fsl_qspi_devtype_data *devtype_data;
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u32 nor_size;
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u32 nor_num;
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u32 clk_rate;
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@@ -933,8 +933,6 @@ static int fsl_qspi_probe(struct platfor
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struct spi_nor *nor;
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struct mtd_info *mtd;
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int ret, i = 0;
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- const struct of_device_id *of_id =
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- of_match_device(fsl_qspi_dt_ids, &pdev->dev);
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q = devm_kzalloc(dev, sizeof(*q), GFP_KERNEL);
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if (!q)
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@@ -945,7 +943,9 @@ static int fsl_qspi_probe(struct platfor
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return -ENODEV;
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q->dev = dev;
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- q->devtype_data = (struct fsl_qspi_devtype_data *)of_id->data;
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+ q->devtype_data = of_device_get_match_data(dev);
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+ if (!q->devtype_data)
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+ return -ENODEV;
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platform_set_drvdata(pdev, q);
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/* find the resources */
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