linux-kernel - [PATCH 1/3] m68k: Return directly after a failed capable() in sys

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Date:   Wed, 18 Jan 2017 17:47:33 +0100
From:   SF Markus Elfring <elfring@...rs.sourceforge.net>
To:     linux-m68k@...ts.linux-m68k.org,
        Geert Uytterhoeven <geert@...ux-m68k.org>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org
Subject: [PATCH 1/3] m68k: Return directly after a failed capable() in
 sys_cacheflush()

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Wed, 18 Jan 2017 16:30:36 +0100

Return directly after a call of the function "capable" failed
at the beginning.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 arch/m68k/kernel/sys_m68k.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/arch/m68k/kernel/sys_m68k.c b/arch/m68k/kernel/sys_m68k.c
index 9aa01adb407f..62bfeb3716a7 100644
--- a/arch/m68k/kernel/sys_m68k.c
+++ b/arch/m68k/kernel/sys_m68k.c
@@ -384,9 +384,8 @@ sys_cacheflush (unsigned long addr, int scope, int cache, unsigned long len)
 
 	if (scope == FLUSH_SCOPE_ALL) {
 		/* Only the superuser may explicitly flush the whole cache. */
-		ret = -EPERM;
 		if (!capable(CAP_SYS_ADMIN))
-			goto out;
+			return -EPERM;
 	} else {
 		struct vm_area_struct *vma;
 
-- 
2.11.0