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authorSujit Reddy Thumma <sthumma@codeaurora.org>2014-07-23 10:31:12 +0400
committerChristoph Hellwig <hch@lst.de>2014-07-26 01:17:06 +0400
commitea2aab2401576a7a2921f656d4184a0225aa138f (patch)
tree79827f74afa11831aa0a9661f11c1c3e33ff4383 /drivers/scsi/ufs
parent7289f983548b24822971d7c3c2997734ff07b2f3 (diff)
downloadlinux-ea2aab2401576a7a2921f656d4184a0225aa138f.tar.xz
scsi: ufs: fix endianness sparse warnings
Fix many warnings with incorrect endian assumptions which makes the code unportable to new architectures. The UFS specification defines the byte order as big-endian for UPIU structure and little-endian for the host controller transfer/task management descriptors. Signed-off-by: Sujit Reddy Thumma <sthumma@codeaurora.org> Signed-off-by: Dolev Raviv <draviv@codeaurora.org> Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'drivers/scsi/ufs')
-rw-r--r--drivers/scsi/ufs/ufshcd.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index a450407a56ee..ba27215b8034 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -464,7 +464,8 @@ int ufshcd_copy_query_response(struct ufs_hba *hba, struct ufshcd_lrb *lrbp)
/* data segment length */
resp_len = be32_to_cpu(lrbp->ucd_rsp_ptr->header.dword_2) &
MASK_QUERY_DATA_SEG_LEN;
- buf_len = hba->dev_cmd.query.request.upiu_req.length;
+ buf_len = be16_to_cpu(
+ hba->dev_cmd.query.request.upiu_req.length);
if (likely(buf_len >= resp_len)) {
memcpy(hba->dev_cmd.query.descriptor, descp, resp_len);
} else {
@@ -1342,7 +1343,7 @@ static int ufshcd_query_descriptor(struct ufs_hba *hba,
ufshcd_init_query(hba, &request, &response, opcode, idn, index,
selector);
hba->dev_cmd.query.descriptor = desc_buf;
- request->upiu_req.length = *buf_len;
+ request->upiu_req.length = cpu_to_be16(*buf_len);
switch (opcode) {
case UPIU_QUERY_OPCODE_WRITE_DESC:
@@ -1368,7 +1369,7 @@ static int ufshcd_query_descriptor(struct ufs_hba *hba,
}
hba->dev_cmd.query.descriptor = NULL;
- *buf_len = response->upiu_res.length;
+ *buf_len = be16_to_cpu(response->upiu_res.length);
out_unlock:
mutex_unlock(&hba->dev_cmd.lock);