check_signature.c

Go to the documentation of this file.

#include <linux/io.h>
#include <linux/export.h>

int check_signature(const volatile void __iomem *io_addr,
            const unsigned char *signature, int length)
{
    while (length--) {
        if (readb(io_addr) != *signature)
            return 0;
        io_addr++;
        signature++;
    }
    return 1;
}
EXPORT_SYMBOL(check_signature);