diff options
| author | Brian Norris <computersforpeace@gmail.com> | 2015-11-16 21:45:30 +0300 |
|---|---|---|
| committer | Brian Norris <computersforpeace@gmail.com> | 2015-11-18 21:31:23 +0300 |
| commit | c98f71d1c05601cff0f302889933798020e08869 (patch) | |
| tree | 6ead085b0b422b7adfe2e01c7894e7b61aeafff5 /drivers/mtd/spi-nor | |
| parent | fc5adbebac6ffab461492f7a415648b29b1a3b31 (diff) | |
| download | linux-c98f71d1c05601cff0f302889933798020e08869.tar.xz | |
mtd: fsl-quadspi: possible NULL dereference
It is theoretically possible to probe this driver without a matching
device tree, so let's guard against this.
Also, use the of_device_get_match_data() helper to make this a bit
simpler.
Coverity complained about this one.
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Acked-by: Han xu <han.xu@freescale.com>
Diffstat (limited to 'drivers/mtd/spi-nor')
| -rw-r--r-- | drivers/mtd/spi-nor/fsl-quadspi.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/mtd/spi-nor/fsl-quadspi.c b/drivers/mtd/spi-nor/fsl-quadspi.c index 9e7f657af6a5..54640f1eb3a1 100644 --- a/drivers/mtd/spi-nor/fsl-quadspi.c +++ b/drivers/mtd/spi-nor/fsl-quadspi.c @@ -269,7 +269,7 @@ struct fsl_qspi { struct clk *clk, *clk_en; struct device *dev; struct completion c; - struct fsl_qspi_devtype_data *devtype_data; + const struct fsl_qspi_devtype_data *devtype_data; u32 nor_size; u32 nor_num; u32 clk_rate; @@ -933,8 +933,6 @@ static int fsl_qspi_probe(struct platform_device *pdev) struct spi_nor *nor; struct mtd_info *mtd; int ret, i = 0; - const struct of_device_id *of_id = - of_match_device(fsl_qspi_dt_ids, &pdev->dev); q = devm_kzalloc(dev, sizeof(*q), GFP_KERNEL); if (!q) @@ -945,7 +943,9 @@ static int fsl_qspi_probe(struct platform_device *pdev) return -ENODEV; q->dev = dev; - q->devtype_data = (struct fsl_qspi_devtype_data *)of_id->data; + q->devtype_data = of_device_get_match_data(dev); + if (!q->devtype_data) + return -ENODEV; platform_set_drvdata(pdev, q); /* find the resources */ |