Warning with asm-generic/div64.h

[Guan Xuetao]

Hi, Arnd:

Following warning is generated when using <asm-generic/div64.h>

kernel/power/hibernate.c: In function 'swsusp_show_speed':
kernel/power/hibernate.c:227: warning: comparison of distinct pointer types lacks a cast

After expanding the do_div() macro, the problem line is:

	(void)(((typeof((n)) *)0) == ((uint64_t *)0));

while the type of n is s64.

I am puzzled with the usage of the problem line.

And how to correct it?

Guan Xuetao

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