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| author |   Dan Carpenter <dan.carpenter@oracle.com> | 2019-04-30 13:33:59 +0300 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-04-30 14:19:04 +0200 |
| commit | f998a1180e14d0a10d2ffeccec25779ace879c2a (patch) | |
| tree | 986c349f59e3259c109f790d10b67cde5866be77 /drivers/staging/kpc2000/kpc_spi | |
| parent | staging: kpc2000: Fix a stack information leak in kp2000_cdev_ioctl() (diff) | |
| download | linux-dev-f998a1180e14d0a10d2ffeccec25779ace879c2a.tar.xz linux-dev-f998a1180e14d0a10d2ffeccec25779ace879c2a.zip | |
staging: kpc2000: fix resource size calculation
The code is calculating the resource size wrong because it should be
inclusive of the "res->end" address. In other words, "end - start + 1".
We can just use the resource_size() function to do it correctly.
Fixes: 7dc7967fc39a ("staging: kpc2000: add initial set of Daktronics drivers")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/kpc2000/kpc_spi')
| -rw-r--r-- | drivers/staging/kpc2000/kpc_spi/spi_driver.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/staging/kpc2000/kpc_spi/spi_driver.c b/drivers/staging/kpc2000/kpc_spi/spi_driver.c index c0999e080577..074a578153d0 100644 --- a/drivers/staging/kpc2000/kpc_spi/spi_driver.c +++ b/drivers/staging/kpc2000/kpc_spi/spi_driver.c @@ -452,7 +452,7 @@ kp_spi_probe(struct platform_device *pldev) goto free_master; } - kpspi->phys = (unsigned long)ioremap_nocache(r->start, r->end - r->start); + kpspi->phys = (unsigned long)ioremap_nocache(r->start, resource_size(r)); kpspi->base = (u64 __iomem *)kpspi->phys; status = spi_register_master(master); |