linux-kernel - [PATCH 3.12 54/72] mmc: core: Annotate cmd_hdr as _

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Message-Id: <db47ef430a947ae8e9535a4c2796680106cdb2f7.1478523828.git.jslaby@suse.cz>
Date:   Mon,  7 Nov 2016 14:05:01 +0100
From:   Jiri Slaby <jslaby@...e.cz>
To:     stable@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, Jiri Slaby <jslaby@...e.cz>,
        Ulf Hansson <ulf.hansson@...aro.org>
Subject: [PATCH 3.12 54/72] mmc: core: Annotate cmd_hdr as __le32

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

===============

commit 3f2d26643595973e835e8356ea90c7c15cb1b0f1 upstream.

Commit f68381a70bb2 (mmc: block: fix packed command header endianness)
correctly fixed endianness handling of packed_cmd_hdr in
mmc_blk_packed_hdr_wrq_prep.

But now, sparse complains about incorrect types:
drivers/mmc/card/block.c:1613:27: sparse: incorrect type in assignment (different base types)
drivers/mmc/card/block.c:1613:27:    expected unsigned int [unsigned] [usertype] <noident>
drivers/mmc/card/block.c:1613:27:    got restricted __le32 [usertype] <noident>
...

So annotate cmd_hdr properly using __le32 to make everyone happy.

Signed-off-by: Jiri Slaby <jslaby@...e.cz>
Fixes: f68381a70bb2 (mmc: block: fix packed command header endianness)
Signed-off-by: Ulf Hansson <ulf.hansson@...aro.org>
Signed-off-by: Jiri Slaby <jslaby@...e.cz>
---
 drivers/mmc/card/block.c | 2 +-
 drivers/mmc/card/queue.h | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index 449b9f1d7502..9a7e7e251338 100644
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -1598,7 +1598,7 @@ static void mmc_blk_packed_hdr_wrq_prep(struct mmc_queue_req *mqrq,
 	struct mmc_blk_data *md = mq->data;
 	struct mmc_packed *packed = mqrq->packed;
 	bool do_rel_wr, do_data_tag;
-	u32 *packed_cmd_hdr;
+	__le32 *packed_cmd_hdr;
 	u8 hdr_blocks;
 	u8 i = 1;
 
diff --git a/drivers/mmc/card/queue.h b/drivers/mmc/card/queue.h
index 99e6521e6169..f42c11293dd8 100644
--- a/drivers/mmc/card/queue.h
+++ b/drivers/mmc/card/queue.h
@@ -24,7 +24,7 @@ enum mmc_packed_type {
 
 struct mmc_packed {
 	struct list_head	list;
-	u32			cmd_hdr[1024];
+	__le32			cmd_hdr[1024];
 	unsigned int		blocks;
 	u8			nr_entries;
 	u8			retries;
-- 
2.10.2