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staging: kpc2000: fix resource size calculation

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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: 7dc7967fc3 ("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>
This commit is contained in:
Dan Carpenter 2019-04-30 13:33:59 +03:00 committed by Greg Kroah-Hartman
parent d687bdefba
commit f998a1180e
2 changed files with 2 additions and 2 deletions
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2
drivers/staging/kpc2000/kpc_i2c/i2c_driver.c
View File

@ -632,7 +632,7 @@ int pi2c_probe(struct platform_device *pldev)
priv->adapter.algo = &smbus_algorithm;
res = platform_get_resource(pldev, IORESOURCE_MEM, 0);
priv->smba = (unsigned long)ioremap_nocache(res->start, res->end - res->start);
priv->smba = (unsigned long)ioremap_nocache(res->start, resource_size(res));
priv->pldev = pldev;
pldev->dev.platform_data = priv;

2
drivers/staging/kpc2000/kpc_spi/spi_driver.c
View File

@ -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);