From: Keith Owens <[email protected]>
Date: Wed, 12 Jul 2006 15:47:03 +1000
> func (long regno, unsigned long *contents)
> {
> unsigned long i, *bsp;
> mm_segment_t old_fs;
> bsp = <expression involving only kernel variables>;
> old_fs = set_fs(KERNEL_DS);
> for (i = 0; i < (regno - 32); ++i)
> bsp = ia64_rse_skip_regs(bsp, 1);
> put_user(*contents, bsp);
> set_fs(old_fs);
> }
>
> sparse is complaining that the second parameter to put_user() is not
> marked as __user. How do I tell sparse to ignore this case? Marking
> bsp as __user does not work, sparse then complains about incorrect type
> in assignment (different address spaces).
Since, in this case, you "know what you are doing" you can force the
matter by using the __force keyword as well as __user.
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