This patch converts the non-dio path (fragment buffer path) to use
st_scsi_execute. IOW, it removes scsi_execute_async in the non-dio
path.
Signed-off-by: FUJITA Tomonori <fujita.tomonori@xxxxxxxxxxxxx>
---
drivers/scsi/st.c | 26 ++++++++++++++++++++------
1 files changed, 20 insertions(+), 6 deletions(-)
diff --git a/drivers/scsi/st.c b/drivers/scsi/st.c
index f62f6ca..d3e2a29 100644
--- a/drivers/scsi/st.c
+++ b/drivers/scsi/st.c
@@ -537,6 +537,8 @@ st_do_scsi(struct st_request * SRpnt, struct scsi_tape * STp, unsigned char *cmd
int bytes, int direction, int timeout, int retries, int do_wait)
{
struct completion *waiting;
+ struct rq_map_data *mdata = &STp->buffer->map_data;
+ int ret;
/* if async, make sure there's no command outstanding */
if (!do_wait && ((STp->buffer)->last_SRpnt)) {
@@ -564,21 +566,33 @@ st_do_scsi(struct st_request * SRpnt, struct scsi_tape * STp, unsigned char *cmd
init_completion(waiting);
SRpnt->waiting = waiting;
- if (!STp->buffer->do_dio)
+ if (!STp->buffer->do_dio) {
buf_to_sg(STp->buffer, bytes);
+ mdata->nr_entries =
+ DIV_ROUND_UP(bytes, PAGE_SIZE << mdata->page_order);
+ STp->buffer->map_data.pages = STp->buffer->reserved_pages;
+ STp->buffer->map_data.offset = 0;
+ }
+
memcpy(SRpnt->cmd, cmd, sizeof(SRpnt->cmd));
STp->buffer->cmdstat.have_sense = 0;
STp->buffer->syscall_result = 0;
- if (scsi_execute_async(STp->device, cmd, COMMAND_SIZE(cmd[0]), direction,
- &((STp->buffer)->sg[0]), bytes, (STp->buffer)->sg_segs,
- timeout, retries, SRpnt, st_sleep_done, GFP_KERNEL)) {
+ if (STp->buffer->do_dio)
+ ret = scsi_execute_async(STp->device, cmd, COMMAND_SIZE(cmd[0]),
+ direction, &((STp->buffer)->sg[0]), bytes,
+ (STp->buffer)->sg_segs, timeout, retries,
+ SRpnt, st_sleep_done, GFP_KERNEL);
+ else
+ ret = st_scsi_execute(SRpnt, cmd, direction, NULL, bytes,
+ timeout, retries);
+
+ if (ret) {
/* could not allocate the buffer or request was too large */
(STp->buffer)->syscall_result = (-EBUSY);
(STp->buffer)->last_SRpnt = NULL;
- }
- else if (do_wait) {
+ } else if (do_wait) {
wait_for_completion(waiting);
SRpnt->waiting = NULL;
(STp->buffer)->syscall_result = st_chk_result(STp, SRpnt);
--
1.5.6.5
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