4.14-stable review patch. If anyone has any objections, please let me know.
------------------
[ 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 <[email protected]>
Signed-off-by: Michael Ellerman <[email protected]>
Signed-off-by: Sasha Levin <[email protected]>
---
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 565cead12be2..cf26e62b268d 100644
--- a/arch/powerpc/include/asm/uaccess.h
+++ b/arch/powerpc/include/asm/uaccess.h
@@ -54,7 +54,7 @@
#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()))
/*
--
2.19.1
