[PATCH v3 1/5] scsi: mpt3sas: fix _ctl_set_task_mid() TaskMID check

[Damien Le Moal <damien.lemoal@opensource.wdc.com>]

The TaskMID field of struct Mpi2SCSITaskManagementRequest_t is a 16-bits
little endian value. Fix the search loop in _ctl_set_task_mid() to add
a cpu_to_le16() conversion before checking the value of TaskMID to avoid
sparse warnings. While at it, simplify the search loop code to remove an
unnecessarily complicated if condition.

Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
---
 drivers/scsi/mpt3sas/mpt3sas_ctl.c | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/drivers/scsi/mpt3sas/mpt3sas_ctl.c b/drivers/scsi/mpt3sas/mpt3sas_ctl.c
index d92ca140d298..84c87c2c3e7e 100644
--- a/drivers/scsi/mpt3sas/mpt3sas_ctl.c
+++ b/drivers/scsi/mpt3sas/mpt3sas_ctl.c
@@ -578,7 +578,7 @@ static int
 _ctl_set_task_mid(struct MPT3SAS_ADAPTER *ioc, struct mpt3_ioctl_command *karg,
 	Mpi2SCSITaskManagementRequest_t *tm_request)
 {
-	u8 found = 0;
+	bool found = false;
 	u16 smid;
 	u16 handle;
 	struct scsi_cmnd *scmd;
@@ -600,6 +600,7 @@ _ctl_set_task_mid(struct MPT3SAS_ADAPTER *ioc, struct mpt3_ioctl_command *karg,
 	handle = le16_to_cpu(tm_request->DevHandle);
 	for (smid = ioc->scsiio_depth; smid && !found; smid--) {
 		struct scsiio_tracker *st;
+		__le16 task_mid;
 
 		scmd = mpt3sas_scsih_scsi_lookup_get(ioc, smid);
 		if (!scmd)
@@ -618,10 +619,10 @@ _ctl_set_task_mid(struct MPT3SAS_ADAPTER *ioc, struct mpt3_ioctl_command *karg,
 		 * first outstanding smid will be picked up.  Otherwise,
 		 * targeted smid will be the one.
 		 */
-		if (!tm_request->TaskMID || tm_request->TaskMID == st->smid) {
-			tm_request->TaskMID = cpu_to_le16(st->smid);
-			found = 1;
-		}
+		task_mid = cpu_to_le16(st->smid);
+		if (!tm_request->TaskMID)
+			tm_request->TaskMID = task_mid;
+		found = tm_request->TaskMID == task_mid;
 	}
 
 	if (!found) {
-- 
2.35.1