From: Sujit Reddy Thumma Date: Wed, 23 Jul 2014 06:31:12 +0000 (+0300) Subject: scsi: ufs: fix endianness sparse warnings X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=ea2aab2401576a7a2921f656d4184a0225aa138f;p=linux-beck.git 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 Signed-off-by: Dolev Raviv Signed-off-by: Christoph Hellwig --- 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);