From 79435ac78d160e4c245544d457850a56f805ac0d Mon Sep 17 00:00:00 2001 From: Vineet Gupta <vgupta@synopsys.com> Date: Fri, 8 Dec 2017 08:26:58 -0800 Subject: [PATCH] ARC: uaccess: dont use "l" gcc inline asm constraint modifier This used to setup the LP_COUNT register automatically, but now has been removed. There was an earlier fix 3c7c7a2fc8811 which fixed instance in delay.h but somehow missed this one as gcc change had not made its way into production toolchains and was not pedantic as it is now ! Cc: stable@vger.kernel.org Signed-off-by: Vineet Gupta <vgupta@synopsys.com> --- arch/arc/include/asm/uaccess.h | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/arch/arc/include/asm/uaccess.h b/arch/arc/include/asm/uaccess.h index f35974ee7264a..c9173c02081c0 100644 --- a/arch/arc/include/asm/uaccess.h +++ b/arch/arc/include/asm/uaccess.h @@ -668,6 +668,7 @@ __arc_strncpy_from_user(char *dst, const char __user *src, long count) return 0; __asm__ __volatile__( + " mov lp_count, %5 \n" " lp 3f \n" "1: ldb.ab %3, [%2, 1] \n" " breq.d %3, 0, 3f \n" @@ -684,8 +685,8 @@ __arc_strncpy_from_user(char *dst, const char __user *src, long count) " .word 1b, 4b \n" " .previous \n" : "+r"(res), "+r"(dst), "+r"(src), "=r"(val) - : "g"(-EFAULT), "l"(count) - : "memory"); + : "g"(-EFAULT), "r"(count) + : "lp_count", "lp_start", "lp_end", "memory"); return res; }