[PATCH v4 4/6] scsi: core: Add lock context annotations

Document which functions expect that shost->scan_mutex is held.

Signed-off-by: Bart Van Assche <[email protected]>
---
 drivers/scsi/scsi_scan.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c
index d7e0e9393194..3b82e80e807a 100644
--- a/drivers/scsi/scsi_scan.c
+++ b/drivers/scsi/scsi_scan.c
@@ -1195,6 +1195,7 @@ static int scsi_probe_and_add_lun(struct Scsi_Host =
*shost,
 				  struct scsi_device **sdevp,
 				  enum scsi_scan_mode rescan,
 				  void *hostdata)
+	__must_hold(&shost->scan_mutex)
 {
 	struct scsi_device *sdev;
 	unsigned char *result;
@@ -1352,6 +1353,7 @@ static void scsi_sequential_lun_scan(struct Scsi_Ho=
st *shost,
 				     struct scsi_target *starget,
 				     blist_flags_t bflags, int scsi_level,
 				     enum scsi_scan_mode rescan)
+	__must_hold(&shost->scan_mutex)
 {
 	uint max_dev_lun;
 	u64 sparse_lun, lun;
@@ -1444,6 +1446,7 @@ static void scsi_sequential_lun_scan(struct Scsi_Ho=
st *shost,
 static int scsi_report_lun_scan(struct Scsi_Host *shost,
 			struct scsi_target *starget, blist_flags_t bflags,
 			enum scsi_scan_mode rescan)
+	__must_hold(&shost->scan_mutex)
 {
 	unsigned char scsi_cmd[MAX_COMMAND_SIZE];
 	unsigned int length;
@@ -1769,6 +1772,7 @@ EXPORT_SYMBOL(scsi_rescan_device);
 static void __scsi_scan_target(struct Scsi_Host *shost, struct device *p=
arent,
 			       unsigned int channel, unsigned int id, u64 lun,
 			       enum scsi_scan_mode rescan)
+	__must_hold(&shost->scan_mutex)
 {
 	blist_flags_t bflags =3D 0;
 	int res;
@@ -1866,6 +1870,7 @@ EXPORT_SYMBOL(scsi_scan_target);
 static void scsi_scan_channel(struct Scsi_Host *shost, unsigned int chan=
nel,
 			      unsigned int id, u64 lun,
 			      enum scsi_scan_mode rescan)
+	__must_hold(&shost->scan_mutex)
 {
 	uint order_id;
=20