Subject: Re: [v3] powerpc/uaccess: fix warning/error with access_ok()

From: Michael Ellerman <[email-masked]>
Date: Sat, 22 Dec 2018 20:54:37 +1100 (AEDT)

On Mon, 2018-12-10 at 06:50:09 UTC, Christophe Leroy wrote:
> With the following piece of code, the following compilation warning
> is encountered:
> 
> 	if (_IOC_DIR(ioc) != _IOC_NONE) {
> 		int verify = _IOC_DIR(ioc) & _IOC_READ ? VERIFY_WRITE : VERIFY_READ;
> 
> 		if (!access_ok(verify, ioarg, _IOC_SIZE(ioc))) {
> 
> drivers/platform/test/dev.c: In function 'my_ioctl':
> drivers/platform/test/dev.c:219:7: warning: unused variable 'verify' [-Wunused-variable]
>    int verify = _IOC_DIR(ioc) & _IOC_READ ? VERIFY_WRITE : VERIFY_READ;
> 
> This patch fixes it by referencing 'type' in the macro allthough
> doing nothing with it.
> 
> Signed-off-by: Christophe Leroy <[email-masked]>

Applied to powerpc next, thanks.

https://git.kernel.org/powerpc/c/05a4ab823983d9136a460b7b5e0d49

cheers