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Commit f998a118 authored by Dan Carpenter's avatar Dan Carpenter Committed by Greg Kroah-Hartman
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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: 7dc7967f ("staging: kpc2000: add initial set of Daktronics drivers")
Signed-off-by: default avatarDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent d687bdef

drivers/staging/kpc2000/kpc_i2c/i2c_driver.c

+1 −1
Original line number Diff line number Diff line
@@ -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;

drivers/staging/kpc2000/kpc_spi/spi_driver.c

+1 −1
Original line number Diff line number Diff line
@@ -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);