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    SubjectRe: [PATCH 12/27] asm-generic: add a NOMMU uaccess.h
    On Thu, Nov 06, 2008 at 04:31:03PM +0100, Arnd Bergmann wrote:
    > +#define put_user(x, ptr) ( \
    > + access_ok(VERIFY_WRITE, ptr, sizeof (*ptr)) ? \
    > + __put_user(x, ptr) : \
    > + -EFAULT)
    > +
    > +#ifndef __get_user
    > +#define __get_user(x, ptr) \
    > +({ \
    > + int __gu_err = 0; \
    > + unsigned long __gu_val = (unsigned long)*ptr; \
    > + switch (sizeof(*(ptr))) { \
    > + case 1: \
    > + case 2: \
    > + case 4: \
    > + case 8: \
    > + break; \

    If sizeof(unsigned long) = 4, then how can the sizeof(*(ptr)) > 4 case
    work?

    --
    Russell King
    Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/
    maintainer of:


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