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From: tip-bot for Mark Rutland <tipbot@zytor.com>
To: linux-tip-commits@vger.kernel.org
Cc: tglx@linutronix.de, peterz@infradead.org, will.deacon@arm.com,
	hpa@zytor.com, palmer@sifive.com, mingo@kernel.org,
	mark.rutland@arm.com, torvalds@linux-foundation.org,
	aou@eecs.berkeley.edu, linux-kernel@vger.kernel.org
Subject: [tip:locking/core] locking/atomic, riscv: Fix atomic64_sub_if_positive() offset argument
Date: Mon, 3 Jun 2019 06:41:06 -0700	[thread overview]
Message-ID: <tip-33e42ef571979fe6601ac838d338eb599d842a6d@git.kernel.org> (raw)
In-Reply-To: <20190522132250.26499-12-mark.rutland@arm.com>

Commit-ID:  33e42ef571979fe6601ac838d338eb599d842a6d
Gitweb:     https://git.kernel.org/tip/33e42ef571979fe6601ac838d338eb599d842a6d
Author:     Mark Rutland <mark.rutland@arm.com>
AuthorDate: Wed, 22 May 2019 14:22:43 +0100
Committer:  Ingo Molnar <mingo@kernel.org>
CommitDate: Mon, 3 Jun 2019 12:32:56 +0200

locking/atomic, riscv: Fix atomic64_sub_if_positive() offset argument

Presently the riscv implementation of atomic64_sub_if_positive() takes
a 32-bit offset value rather than a 64-bit offset value as it should do.
Thus, if called with a 64-bit offset, the value will be unexpectedly
truncated to 32 bits.

Fix this by taking the offset as a long rather than an int.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Palmer Dabbelt <palmer@sifive.com>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Deacon <will.deacon@arm.com>
Cc: arnd@arndb.de
Cc: bp@alien8.de
Cc: catalin.marinas@arm.com
Cc: davem@davemloft.net
Cc: fenghua.yu@intel.com
Cc: heiko.carstens@de.ibm.com
Cc: herbert@gondor.apana.org.au
Cc: ink@jurassic.park.msu.ru
Cc: jhogan@kernel.org
Cc: linux@armlinux.org.uk
Cc: mattst88@gmail.com
Cc: mpe@ellerman.id.au
Cc: paul.burton@mips.com
Cc: paulus@samba.org
Cc: ralf@linux-mips.org
Cc: rth@twiddle.net
Cc: tony.luck@intel.com
Cc: vgupta@synopsys.com
Link: https://lkml.kernel.org/r/20190522132250.26499-12-mark.rutland@arm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---
 arch/riscv/include/asm/atomic.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/riscv/include/asm/atomic.h b/arch/riscv/include/asm/atomic.h
index 9038aeb900a6..9c263bd9d5ad 100644
--- a/arch/riscv/include/asm/atomic.h
+++ b/arch/riscv/include/asm/atomic.h
@@ -332,7 +332,7 @@ static __always_inline int atomic_sub_if_positive(atomic_t *v, int offset)
 #define atomic_dec_if_positive(v)	atomic_sub_if_positive(v, 1)
 
 #ifndef CONFIG_GENERIC_ATOMIC64
-static __always_inline long atomic64_sub_if_positive(atomic64_t *v, int offset)
+static __always_inline long atomic64_sub_if_positive(atomic64_t *v, long offset)
 {
        long prev, rc;
 

  parent reply	other threads:[~2019-06-03 13:41 UTC|newest]

Thread overview: 60+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-22 13:22 [PATCH 00/18] locking/atomic: atomic64 type cleanup Mark Rutland
2019-05-22 13:22 ` [PATCH 01/18] locking/atomic: crypto: nx: prepare for atomic64_read() conversion Mark Rutland
2019-06-03 13:34   ` [tip:locking/core] locking/atomic, crypto/nx: Prepare " tip-bot for Mark Rutland
2019-05-22 13:22 ` [PATCH 02/18] locking/atomic: s390/pci: prepare " Mark Rutland
2019-06-03 13:34   ` [tip:locking/core] locking/atomic, s390/pci: Prepare " tip-bot for Mark Rutland
2019-05-22 13:22 ` [PATCH 03/18] locking/atomic: generic: use s64 for atomic64 Mark Rutland
2019-05-22 21:16   ` Arnd Bergmann
2019-06-03 13:35   ` [tip:locking/core] locking/atomic: Use " tip-bot for Mark Rutland
2019-05-22 13:22 ` [PATCH 04/18] locking/atomic: alpha: use " Mark Rutland
2019-06-03 13:36   ` [tip:locking/core] locking/atomic, alpha: Use " tip-bot for Mark Rutland
2019-05-22 13:22 ` [PATCH 05/18] locking/atomic: arc: use " Mark Rutland
2019-05-23 23:10   ` Vineet Gupta
2019-06-03 13:36   ` [tip:locking/core] locking/atomic, arc: Use " tip-bot for Mark Rutland
2019-05-22 13:22 ` [PATCH 06/18] locking/atomic: arm: use " Mark Rutland
2019-06-03 13:37   ` [tip:locking/core] locking/atomic, arm: Use " tip-bot for Mark Rutland
2019-05-22 13:22 ` [PATCH 07/18] locking/atomic: arm64: use " Mark Rutland
2019-06-03 13:38   ` [tip:locking/core] locking/atomic, arm64: Use " tip-bot for Mark Rutland
2019-05-22 13:22 ` [PATCH 08/18] locking/atomic: ia64: use " Mark Rutland
2019-06-03 13:39   ` [tip:locking/core] locking/atomic, ia64: Use " tip-bot for Mark Rutland
2019-05-22 13:22 ` [PATCH 09/18] locking/atomic: mips: use " Mark Rutland
2019-06-03 13:39   ` [tip:locking/core] locking/atomic, mips: Use " tip-bot for Mark Rutland
2019-05-22 13:22 ` [PATCH 10/18] locking/atomic: powerpc: use " Mark Rutland
2019-05-23 13:27   ` Michael Ellerman
2019-06-03 13:40   ` [tip:locking/core] locking/atomic, powerpc: Use " tip-bot for Mark Rutland
2019-05-22 13:22 ` [PATCH 11/18] locking/atomic: riscv: fix atomic64_sub_if_positive() offset argument Mark Rutland
2019-05-22 19:06   ` Palmer Dabbelt
2019-06-03 13:41   ` tip-bot for Mark Rutland [this message]
2019-05-22 13:22 ` [PATCH 12/18] locking/atomic: riscv: use s64 for atomic64 Mark Rutland
2019-05-22 19:06   ` Palmer Dabbelt
2019-05-23 10:23     ` Mark Rutland
2019-06-03 13:41   ` [tip:locking/core] locking/atomic, riscv: Use " tip-bot for Mark Rutland
2019-05-22 13:22 ` [PATCH 13/18] locking/atomic: s390: use " Mark Rutland
2019-06-03 13:42   ` [tip:locking/core] locking/atomic, s390: Use " tip-bot for Mark Rutland
2019-05-22 13:22 ` [PATCH 14/18] locking/atomic: sparc: use " Mark Rutland
2019-06-03 13:43   ` [tip:locking/core] locking/atomic, sparc: Use " tip-bot for Mark Rutland
2019-05-22 13:22 ` [PATCH 15/18] locking/atomic: x86: use " Mark Rutland
2019-06-03 13:44   ` [tip:locking/core] locking/atomic, x86: Use " tip-bot for Mark Rutland
2019-05-22 13:22 ` [PATCH 16/18] locking/atomic: use s64 for atomic64_t on 64-bit Mark Rutland
2019-06-03 13:44   ` [tip:locking/core] locking/atomic: Use " tip-bot for Mark Rutland
2019-05-22 13:22 ` [PATCH 17/18] locking/atomic: crypto: nx: remove redundant casts Mark Rutland
2019-06-03 13:45   ` [tip:locking/core] locking/atomic, crypto/nx: Remove " tip-bot for Mark Rutland
2019-05-22 13:22 ` [PATCH 18/18] locking/atomic: s390/pci: remove " Mark Rutland
2019-06-03 13:46   ` [tip:locking/core] locking/atomic, s390/pci: Remove " tip-bot for Mark Rutland
2019-05-22 21:18 ` [PATCH 00/18] locking/atomic: atomic64 type cleanup Arnd Bergmann
2019-05-23 10:28   ` Mark Rutland
2019-05-23  8:30 ` Andrea Parri
2019-05-23 10:19   ` Mark Rutland
2019-05-23 11:20     ` Andrea Parri
2019-05-24 10:37     ` Peter Zijlstra
2019-05-24 11:18       ` Peter Zijlstra
2019-05-24 11:38         ` Greg KH
2019-05-24 11:42         ` Will Deacon
2019-05-24 11:52           ` Peter Zijlstra
2019-05-24 22:43             ` Andrea Parri
2019-05-28 10:47               ` Peter Zijlstra
2019-05-28 11:15                 ` Andrea Parri
2019-06-03 13:46             ` [tip:locking/core] Documentation/atomic_t.txt: Clarify pure non-rmw usage tip-bot for Peter Zijlstra
2019-06-06  8:44               ` Andrea Parri
2019-06-06  9:04                 ` Peter Zijlstra
2019-06-06  9:11                   ` Andrea Parri

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