Subject: [RFC PATCH 1/5] powerpc: Fix inverted active predicate for setting the EBB regset

From: Pedro Franco de Carvalho <[email-masked]>
Date: Thu, 7 Jun 2018 12:25:30 -0300

Currently, the ebb_set function for writing to the EBB regset returns
ENODATA when ebb is active in the thread, and copies in the data when
it is inactive. This patch inverts the condition so that it matches
ebb_get and ebb_active.
---
 arch/powerpc/kernel/ptrace.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/powerpc/kernel/ptrace.c b/arch/powerpc/kernel/ptrace.c
index d23cf632edf0..6618570c6d56 100644
--- a/arch/powerpc/kernel/ptrace.c
+++ b/arch/powerpc/kernel/ptrace.c
@@ -1701,7 +1701,7 @@ static int ebb_set(struct task_struct *target,
 	if (!cpu_has_feature(CPU_FTR_ARCH_207S))
 		return -ENODEV;
 
-	if (target->thread.used_ebb)
+	if (!target->thread.used_ebb)
 		return -ENODATA;
 
 	ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
-- 
2.13.6