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| author | Yang Yingliang <yangyingliang@huawei.com> | 2022-05-05 12:39:54 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2022-05-09 14:48:47 +0300 |
| commit | a2b331ac11e1cac56f5b7d367e9f3c5796deaaed (patch) | |
| tree | 086ae7f073a7279532a6e0240ef9f1a26936c096 /drivers/spi | |
| parent | 2cd757e6292e23b898791d71978c6edf60a251ad (diff) | |
| download | linux-a2b331ac11e1cac56f5b7d367e9f3c5796deaaed.tar.xz | |
spi: spi-fsl-qspi: check return value after calling platform_get_resource_byname()
It will cause null-ptr-deref if platform_get_resource_byname() returns NULL,
we need check the return value.
Fixes: 858e26a515c2 ("spi: spi-fsl-qspi: Reduce devm_ioremap size to 4 times AHB buffer size")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20220505093954.1285615-1-yangyingliang@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi')
| -rw-r--r-- | drivers/spi/spi-fsl-qspi.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/spi/spi-fsl-qspi.c b/drivers/spi/spi-fsl-qspi.c index 9851551ebbe0..46ae46a944c5 100644 --- a/drivers/spi/spi-fsl-qspi.c +++ b/drivers/spi/spi-fsl-qspi.c @@ -876,6 +876,10 @@ static int fsl_qspi_probe(struct platform_device *pdev) res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "QuadSPI-memory"); + if (!res) { + ret = -EINVAL; + goto err_put_ctrl; + } q->memmap_phy = res->start; /* Since there are 4 cs, map size required is 4 times ahb_buf_size */ q->ahb_addr = devm_ioremap(dev, q->memmap_phy, |