linux-kernel - [PATCH] percpu: eliminate two sparse warnings

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <1474553037-13318-1-git-send-email-lrichard@redhat.com>
Date:   Thu, 22 Sep 2016 10:03:57 -0400
From:   Lance Richardson <lrichard@...hat.com>
To:     linux-kernel@...r.kernel.org
Cc:     tj@...nel.org, cl@...ux.com, tglx@...utronix.de, mingo@...hat.com,
        hpa@...or.com, x86@...nel.org
Subject: [PATCH] percpu: eliminate two sparse warnings

Fix two cases where a __percpu pointer cast drops __percpu.

Signed-off-by: Lance Richardson <lrichard@...hat.com>
---
 arch/x86/include/asm/percpu.h | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/arch/x86/include/asm/percpu.h b/arch/x86/include/asm/percpu.h
index e02e3f8..84f58de 100644
--- a/arch/x86/include/asm/percpu.h
+++ b/arch/x86/include/asm/percpu.h
@@ -521,7 +521,8 @@ do {									\
 static __always_inline bool x86_this_cpu_constant_test_bit(unsigned int nr,
                         const unsigned long __percpu *addr)
 {
-	unsigned long __percpu *a = (unsigned long *)addr + nr / BITS_PER_LONG;
+	unsigned long __percpu *a =
+		(unsigned long __percpu *)addr + nr / BITS_PER_LONG;
 
 #ifdef CONFIG_X86_64
 	return ((1UL << (nr % BITS_PER_LONG)) & raw_cpu_read_8(*a)) != 0;
@@ -538,7 +539,7 @@ static inline bool x86_this_cpu_variable_test_bit(int nr,
 	asm volatile("bt "__percpu_arg(2)",%1\n\t"
 			CC_SET(c)
 			: CC_OUT(c) (oldbit)
-			: "m" (*(unsigned long *)addr), "Ir" (nr));
+			: "m" (*(unsigned long __percpu *)addr), "Ir" (nr));
 
 	return oldbit;
 }
-- 
2.5.5