diff options
| author | Taras Kondratiuk <takondra@cisco.com> | 2016-07-13 22:05:38 +0000 |
|---|---|---|
| committer | Sasha Levin <alexander.levin@verizon.com> | 2016-08-07 21:58:51 -0400 |
| commit | e18fa5ad02a5920c8582c6e0401ba4f570ede8a0 (patch) | |
| tree | 45106bcd6bb3de6cfc707f1604be9a85f2ae8ee8 | |
| parent | d380c88d88ed317a7493e5cba85fa0ebecf38ac9 (diff) | |
mmc: block: fix packed command header endianness
[ Upstream commit f68381a70bb2b26c31b13fdaf67c778f92fd32b4 ]
The code that fills packed command header assumes that CPU runs in
little-endian mode. Hence the header is malformed in big-endian mode
and causes MMC data transfer errors:
[ 563.200828] mmcblk0: error -110 transferring data, sector 2048, nr 8, cmd response 0x900, card status 0xc40
[ 563.219647] mmcblk0: packed cmd failed, nr 2, sectors 16, failure index: -1
Convert header data to LE.
Signed-off-by: Taras Kondratiuk <takondra@cisco.com>
Fixes: ce39f9d17c14 ("mmc: support packed write command for eMMC4.5 devices")
Cc: <stable@vger.kernel.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
| -rw-r--r-- | drivers/mmc/card/block.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c index 5027ae76fde8..4078ebe81c45 100644 --- a/drivers/mmc/card/block.c +++ b/drivers/mmc/card/block.c @@ -1669,8 +1669,8 @@ static void mmc_blk_packed_hdr_wrq_prep(struct mmc_queue_req *mqrq, packed_cmd_hdr = packed->cmd_hdr; memset(packed_cmd_hdr, 0, sizeof(packed->cmd_hdr)); - packed_cmd_hdr[0] = (packed->nr_entries << 16) | - (PACKED_CMD_WR << 8) | PACKED_CMD_VER; + packed_cmd_hdr[0] = cpu_to_le32((packed->nr_entries << 16) | + (PACKED_CMD_WR << 8) | PACKED_CMD_VER); hdr_blocks = mmc_large_sector(card) ? 8 : 1; /* @@ -1684,14 +1684,14 @@ static void mmc_blk_packed_hdr_wrq_prep(struct mmc_queue_req *mqrq, ((brq->data.blocks * brq->data.blksz) >= card->ext_csd.data_tag_unit_size); /* Argument of CMD23 */ - packed_cmd_hdr[(i * 2)] = + packed_cmd_hdr[(i * 2)] = cpu_to_le32( (do_rel_wr ? MMC_CMD23_ARG_REL_WR : 0) | (do_data_tag ? MMC_CMD23_ARG_TAG_REQ : 0) | - blk_rq_sectors(prq); + blk_rq_sectors(prq)); /* Argument of CMD18 or CMD25 */ - packed_cmd_hdr[((i * 2)) + 1] = + packed_cmd_hdr[((i * 2)) + 1] = cpu_to_le32( mmc_card_blockaddr(card) ? - blk_rq_pos(prq) : blk_rq_pos(prq) << 9; + blk_rq_pos(prq) : blk_rq_pos(prq) << 9); packed->blocks += blk_rq_sectors(prq); i++; } |