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| author | Boris Brezillon <boris.brezillon@bootlin.com> | 2018-05-14 11:11:29 +0200 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2018-05-17 13:36:00 +0900 |
| commit | 6282f122913e632c2415c236a2b5faa8ef368b10 (patch) | |
| tree | caf37309a29de025cc9785ab99b8d0914ad82a47 /drivers/spi | |
| parent | e935dba111621bd6a0c5d48e6511a4d9885103b4 (diff) | |
| download | linux-stable-6282f122913e632c2415c236a2b5faa8ef368b10.tar.gz linux-stable-6282f122913e632c2415c236a2b5faa8ef368b10.tar.bz2 linux-stable-6282f122913e632c2415c236a2b5faa8ef368b10.zip | |
spi: ti-qspi: Make sure res_mmap != NULL before dereferencing it
resource_size() is dereferencing the res without checking that it is
not NULL, so we need to do the check before calling resource_size().
Fixes: b95cb394ab59 ("spi: ti-qspi: Implement the spi_mem interface")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi')
| -rw-r--r-- | drivers/spi/spi-ti-qspi.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/spi/spi-ti-qspi.c b/drivers/spi/spi-ti-qspi.c index c54b760e00ed..5f19016bbf10 100644 --- a/drivers/spi/spi-ti-qspi.c +++ b/drivers/spi/spi-ti-qspi.c @@ -718,7 +718,9 @@ static int ti_qspi_probe(struct platform_device *pdev) "memory mapped resource not required\n"); } } - qspi->mmap_size = resource_size(res_mmap); + + if (res_mmap) + qspi->mmap_size = resource_size(res_mmap); irq = platform_get_irq(pdev, 0); if (irq < 0) { |