Simplyfify blkvsc_init_rw() by using a single scsi command independent of
the start sector
Signed-off-by: K. Y. Srinivasan <k...@microsoft.com>
Signed-off-by: Haiyang Zhang <haiya...@microsoft.com>
Signed-off-by: Hank Janssen <hjans...@microsoft.com>
---
drivers/staging/hv/blkvsc_drv.c | 58 +++++++++------------------------------
1 files changed, 13 insertions(+), 45 deletions(-)
diff --git a/drivers/staging/hv/blkvsc_drv.c b/drivers/staging/hv/blkvsc_drv.c
index da7fd38..69b6290 100644
--- a/drivers/staging/hv/blkvsc_drv.c
+++ b/drivers/staging/hv/blkvsc_drv.c
@@ -304,53 +304,21 @@ static void blkvsc_init_rw(struct blkvsc_request
*blkvsc_req)
blkvsc_req->cmd_len = 16;
- if (blkvsc_req->sector_start > 0xffffffff) {
- if (rq_data_dir(blkvsc_req->req)) {
- blkvsc_req->write = 1;
- blkvsc_req->cmnd[0] = WRITE_16;
- } else {
- blkvsc_req->write = 0;
- blkvsc_req->cmnd[0] = READ_16;
- }
-
- blkvsc_req->cmnd[1] |=
- (blkvsc_req->req->cmd_flags & REQ_FUA) ? 0x8 : 0;
-
- *(unsigned long long *)&blkvsc_req->cmnd[2] =
- cpu_to_be64(blkvsc_req->sector_start);
- *(unsigned int *)&blkvsc_req->cmnd[10] =
- cpu_to_be32(blkvsc_req->sector_count);
- } else if ((blkvsc_req->sector_count > 0xff) ||
- (blkvsc_req->sector_start > 0x1fffff)) {
- if (rq_data_dir(blkvsc_req->req)) {
- blkvsc_req->write = 1;
- blkvsc_req->cmnd[0] = WRITE_10;
- } else {
- blkvsc_req->write = 0;
- blkvsc_req->cmnd[0] = READ_10;
- }
-
- blkvsc_req->cmnd[1] |=
- (blkvsc_req->req->cmd_flags & REQ_FUA) ? 0x8 : 0;
-
- *(unsigned int *)&blkvsc_req->cmnd[2] =
- cpu_to_be32(blkvsc_req->sector_start);
- *(unsigned short *)&blkvsc_req->cmnd[7] =
- cpu_to_be16(blkvsc_req->sector_count);
+ if (rq_data_dir(blkvsc_req->req)) {
+ blkvsc_req->write = 1;
+ blkvsc_req->cmnd[0] = WRITE_16;
} else {
- if (rq_data_dir(blkvsc_req->req)) {
- blkvsc_req->write = 1;
- blkvsc_req->cmnd[0] = WRITE_6;
- } else {
- blkvsc_req->write = 0;
- blkvsc_req->cmnd[0] = READ_6;
- }
-
- *(unsigned int *)&blkvsc_req->cmnd[1] =
- cpu_to_be32(blkvsc_req->sector_start) >> 8;
- blkvsc_req->cmnd[1] &= 0x1f;
- blkvsc_req->cmnd[4] = (unsigned char)blkvsc_req->sector_count;
+ blkvsc_req->write = 0;
+ blkvsc_req->cmnd[0] = READ_16;
}
+
+ blkvsc_req->cmnd[1] |=
+ (blkvsc_req->req->cmd_flags & REQ_FUA) ? 0x8 : 0;
+
+ *(unsigned long long *)&blkvsc_req->cmnd[2] =
+ cpu_to_be64(blkvsc_req->sector_start);
+ *(unsigned int *)&blkvsc_req->cmnd[10] =
+ cpu_to_be32(blkvsc_req->sector_count);
}
--
1.7.4.1
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