[PATCH v6 01/10] powerpc/uaccess: Add unsafe_copy_from_user

[Christopher M. Riedl]

Just wrap __copy_tofrom_user() for the usual 'unsafe' pattern which
accepts a label to goto on error.

Signed-off-by: Christopher M. Riedl <cmr at codefail.de>
Reviewed-by: Daniel Axtens <dja at axtens.net>
---
 arch/powerpc/include/asm/uaccess.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/powerpc/include/asm/uaccess.h b/arch/powerpc/include/asm/uaccess.h
index 78e2a3990eab..33b2de642120 100644
--- a/arch/powerpc/include/asm/uaccess.h
+++ b/arch/powerpc/include/asm/uaccess.h
@@ -487,6 +487,9 @@ user_write_access_begin(const void __user *ptr, size_t len)
 #define unsafe_put_user(x, p, e) \
 	__unsafe_put_user_goto((__typeof__(*(p)))(x), (p), sizeof(*(p)), e)
 
+#define unsafe_copy_from_user(d, s, l, e) \
+	unsafe_op_wrap(__copy_tofrom_user((__force void __user *)d, s, l), e)
+
 #define unsafe_copy_to_user(d, s, l, e) \
 do {									\
 	u8 __user *_dst = (u8 __user *)(d);				\
-- 
2.26.1