linux-kernel - [PATCH 3.19.y-ckt 060/130] mtd: nand: Fix NAND_USE_BOUNCE

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Message-Id: <1440713521-5906-61-git-send-email-kamal@canonical.com>
Date:	Thu, 27 Aug 2015 15:10:51 -0700
From:	Kamal Mostafa <kamal@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Kamal Dasu <kdasu.kdev@...il.com>,
	Scott Wood <scottwood@...escale.com>,
	Brian Norris <computersforpeace@...il.com>,
	Kamal Mostafa <kamal@...onical.com>
Subject: [PATCH 3.19.y-ckt 060/130] mtd: nand: Fix NAND_USE_BOUNCE_BUFFER flag conflict

3.19.8-ckt6 -stable review patch.  If anyone has any objections, please let me know.

------------------

From: Scott Wood <scottwood@...escale.com>

commit 5f867db63473f32cce1b868e281ebd42a41f8fad upstream.

Commit 66507c7bc8895f0da6b ("mtd: nand: Add support to use nand_base
poi databuf as bounce buffer") added a flag NAND_USE_BOUNCE_BUFFER
using the same bit value as the existing NAND_BUSWIDTH_AUTO.

Cc: Kamal Dasu <kdasu.kdev@...il.com>
Fixes: 66507c7bc8895f0da6b ("mtd: nand: Add support to use nand_base
	poi databuf as bounce buffer")
Signed-off-by: Scott Wood <scottwood@...escale.com>
Signed-off-by: Brian Norris <computersforpeace@...il.com>

Signed-off-by: Kamal Mostafa <kamal@...onical.com>
---
 include/linux/mtd/nand.h | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
index 3d4ea7e..12b75f3 100644
--- a/include/linux/mtd/nand.h
+++ b/include/linux/mtd/nand.h
@@ -176,17 +176,17 @@ typedef enum {
 /* Chip may not exist, so silence any errors in scan */
 #define NAND_SCAN_SILENT_NODEV	0x00040000
 /*
- * This option could be defined by controller drivers to protect against
- * kmap'ed, vmalloc'ed highmem buffers being passed from upper layers
- */
-#define NAND_USE_BOUNCE_BUFFER	0x00080000
-/*
  * Autodetect nand buswidth with readid/onfi.
  * This suppose the driver will configure the hardware in 8 bits mode
  * when calling nand_scan_ident, and update its configuration
  * before calling nand_scan_tail.
  */
 #define NAND_BUSWIDTH_AUTO      0x00080000
+/*
+ * This option could be defined by controller drivers to protect against
+ * kmap'ed, vmalloc'ed highmem buffers being passed from upper layers
+ */
+#define NAND_USE_BOUNCE_BUFFER	0x00100000
 
 /* Options set by nand scan */
 /* Nand scan has allocated controller struct */
-- 
1.9.1

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