Re: [PATCH 0/3] xtensa: clean up __user annotations in asm/uaccess.h

[Al Viro]

On Fri, May 22, 2020 at 02:41:50PM -0700, Max Filippov wrote:
> Hello,
> 
> this series adds missing __user annotations to functions in
> asm/uaccess.h. It fixes a bunch of sparse warnings for otherwise correct
> code.
> 
> Max Filippov (3):
>   xtensa: add missing __user annotations to __{get,put}_user_check
>   xtensa: fix type conversion in __get_user_size
>   xtensa: add missing __user annotations to asm/uaccess.h

Useful test:

void __user *f(void __user * __user *p)
{
        void __user *q;
        (void)get_user(q, p);
        return q;
}