[SCSI] esas2r: Fixes for big-endian platforms

In esas2r_format_init_msg(), sgl_page_size and epoch_time params
are converted to little endian and the firmware version read from
the hba is converted to cpu endianess.

In esas2r_rq_init_request, correct and simplify the construction
of the SCSI handle.

These fixes are the result of testing on a PPC64 machine.

Signed-off-by: Bradley Grove <bgrove@attotech.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

diff --git a/drivers/scsi/esas2r/esas2r.h b/drivers/scsi/esas2r/esas2r.h
index d128c96..3fd305d 100644 (file)
--- a/drivers/scsi/esas2r/esas2r.h
+++ b/drivers/scsi/esas2r/esas2r.h
@@ -1207,7 +1207,6 @@ static inline void esas2r_rq_init_request(struct esas2r_request *rq,
                                          struct esas2r_adapter *a)
 {
        union atto_vda_req *vrq = rq->vrq;
-       u32 handle;
 
        INIT_LIST_HEAD(&rq->sg_table_head);
        rq->data_buf = (void *)(vrq + 1);
@@ -1243,11 +1242,9 @@ static inline void esas2r_rq_init_request(struct esas2r_request *rq,
 
        /*
         * add a reference number to the handle to make it unique (until it
-        * wraps of course) while preserving the upper word
+        * wraps of course) while preserving the least significant word
         */
-
-       handle = be32_to_cpu(vrq->scsi.handle) & 0xFFFF0000;
-       vrq->scsi.handle = cpu_to_be32(handle + a->cmd_ref_no++);
+       vrq->scsi.handle = (a->cmd_ref_no++ << 16) | (u16)vrq->scsi.handle;
 
        /*
         * the following formats a SCSI request.  the caller can override as

diff --git a/drivers/scsi/esas2r/esas2r_init.c b/drivers/scsi/esas2r/esas2r_init.c
index 15d222b..8278819 100644 (file)
--- a/drivers/scsi/esas2r/esas2r_init.c
+++ b/drivers/scsi/esas2r/esas2r_init.c
@@ -1235,8 +1235,8 @@ static bool esas2r_format_init_msg(struct esas2r_adapter *a,
                                     0,
                                     NULL);
                ci = (struct atto_vda_cfg_init *)&rq->vrq->cfg.data.init;
-               ci->sgl_page_size = sgl_page_size;
-               ci->epoch_time = now.tv_sec;
+               ci->sgl_page_size = cpu_to_le32(sgl_page_size);
+               ci->epoch_time = cpu_to_le32(now.tv_sec);
                rq->flags |= RF_FAILURE_OK;
                a->init_msg = ESAS2R_INIT_MSG_INIT;
                break;
@@ -1246,12 +1246,15 @@ static bool esas2r_format_init_msg(struct esas2r_adapter *a,
                if (rq->req_stat == RS_SUCCESS) {
                        u32 major;
                        u32 minor;
+                       u16 fw_release;
 
                        a->fw_version = le16_to_cpu(
                                rq->func_rsp.cfg_rsp.vda_version);
                        a->fw_build = rq->func_rsp.cfg_rsp.fw_build;
-                       major = LOBYTE(rq->func_rsp.cfg_rsp.fw_release);
-                       minor = HIBYTE(rq->func_rsp.cfg_rsp.fw_release);
+                       fw_release = le16_to_cpu(
+                               rq->func_rsp.cfg_rsp.fw_release);
+                       major = LOBYTE(fw_release);
+                       minor = HIBYTE(fw_release);
                        a->fw_version += (major << 16) + (minor << 24);
                } else {
                        esas2r_hdebug("FAILED");