From: Christophe Leroy christophe.leroy@c-s.fr
[ Upstream commit 05a4ab823983d9136a460b7b5e0d49ee709a6f86 ]
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 christophe.leroy@c-s.fr Signed-off-by: Michael Ellerman mpe@ellerman.id.au Signed-off-by: Sasha Levin sashal@kernel.org --- arch/powerpc/include/asm/uaccess.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/powerpc/include/asm/uaccess.h b/arch/powerpc/include/asm/uaccess.h index 46c486599645..1bb8cc3fbbf1 100644 --- a/arch/powerpc/include/asm/uaccess.h +++ b/arch/powerpc/include/asm/uaccess.h @@ -59,7 +59,7 @@ #endif
#define access_ok(type, addr, size) \ - (__chk_user_ptr(addr), \ + (__chk_user_ptr(addr), (void)(type), \ __access_ok((__force unsigned long)(addr), (size), get_fs()))
/*