From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, Paul Burton <paul.burton@imgtec.com>,
linux-mips@linux-mips.org, Ralf Baechle <ralf@linux-mips.org>
Subject: [PATCH 4.12 63/65] Revert "MIPS: Dont unnecessarily include kmalloc.h into <asm/cache.h>."
Date: Mon, 14 Aug 2017 18:19:54 -0700 [thread overview]
Message-ID: <20170815011944.887563649@linuxfoundation.org> (raw)
In-Reply-To: <20170815011942.395714306@linuxfoundation.org>
4.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Paul Burton <paul.burton@imgtec.com>
commit ae5b0675942ab30cde96099c68a2290bd1aafcca upstream.
Commit 296e46db0073 ("MIPS: Don't unnecessarily include kmalloc.h into
<asm/cache.h>.") claimed that the inclusion of the machine's kmalloc.h
from asm/cache.h is unnecessary, but this is not true.
Without including kmalloc.h we don't get a definition for
ARCH_DMA_MINALIGN, which means we no longer suitably align DMA. Further
to this the definition of ARCH_KMALLOC_MINALIGN provided by linux/slab.h
ends up being set to the alignment of an unsigned long long value rather
than to ARCH_DMA_MINALIGN, which means that buffers allocated using
kmalloc may no longer be safely aligned for use with DMA.
Fix this by re-adding the include of kmalloc.h in asm/cache.h. This
reverts commit 296e46db0073 ("MIPS: Don't unnecessarily include
kmalloc.h into <asm/cache.h>.")
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Fixes: 296e46db0073 ("MIPS: Don't unnecessarily include kmalloc.h into <asm/cache.h>.")
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/16895/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/mips/include/asm/cache.h | 2 ++
1 file changed, 2 insertions(+)
--- a/arch/mips/include/asm/cache.h
+++ b/arch/mips/include/asm/cache.h
@@ -9,6 +9,8 @@
#ifndef _ASM_CACHE_H
#define _ASM_CACHE_H
+#include <kmalloc.h>
+
#define L1_CACHE_SHIFT CONFIG_MIPS_L1_CACHE_SHIFT
#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT)
next prev parent reply other threads:[~2017-08-15 1:21 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20170815011942.395714306@linuxfoundation.org>
2017-08-15 1:19 ` [PATCH 4.12 62/65] MIPS: DEC: Fix an int-handler.S CPU_DADDI_WORKAROUNDS regression Greg Kroah-Hartman
2017-08-15 1:19 ` Greg Kroah-Hartman [this message]
2017-08-15 1:19 ` [PATCH 4.12 64/65] MIPS: Octeon: Fix broken EDAC driver Greg Kroah-Hartman
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