treewide: use get_random_u32_below() instead of deprecated function

This is a simple mechanical transformation done by:

@@
expression E;
@@
- prandom_u32_max
+ get_random_u32_below
  (E)

Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Darrick J. Wong <djwong@kernel.org> # for xfs
Reviewed-by: SeongJae Park <sj@kernel.org> # for damon
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> # for infiniband
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> # for arm
Acked-by: Ulf Hansson <ulf.hansson@linaro.org> # for mmc
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>

3 files changed, 6 insertions, 6 deletions

diff --git a/drivers/scsi/fcoe/fcoe_ctlr.c b/drivers/scsi/fcoe/fcoe_ctlr.c
index ddc048069af2..5c8d1ba3f8f3 100644
--- a/drivers/scsi/fcoe/fcoe_ctlr.c
+++ b/drivers/scsi/fcoe/fcoe_ctlr.c
@@ -2233,7 +2233,7 @@ static void fcoe_ctlr_vn_restart(struct fcoe_ctlr *fip)
 
 	if (fip->probe_tries < FIP_VN_RLIM_COUNT) {
 		fip->probe_tries++;
-		wait = prandom_u32_max(FIP_VN_PROBE_WAIT);
+		wait = get_random_u32_below(FIP_VN_PROBE_WAIT);
 	} else
 		wait = FIP_VN_RLIM_INT;
 	mod_timer(&fip->timer, jiffies + msecs_to_jiffies(wait));
@@ -3125,7 +3125,7 @@ static void fcoe_ctlr_vn_timeout(struct fcoe_ctlr *fip)
 					  fcoe_all_vn2vn, 0);
 			fip->port_ka_time = jiffies +
 				 msecs_to_jiffies(FIP_VN_BEACON_INT +
-					prandom_u32_max(FIP_VN_BEACON_FUZZ));
+					get_random_u32_below(FIP_VN_BEACON_FUZZ));
 		}
 		if (time_before(fip->port_ka_time, next_time))
 			next_time = fip->port_ka_time;
diff --git a/drivers/scsi/qedi/qedi_main.c b/drivers/scsi/qedi/qedi_main.c
index df2fe7bd26d1..f2ee49756df8 100644
--- a/drivers/scsi/qedi/qedi_main.c
+++ b/drivers/scsi/qedi/qedi_main.c
@@ -618,7 +618,7 @@ static int qedi_cm_alloc_mem(struct qedi_ctx *qedi)
 				sizeof(struct qedi_endpoint *)), GFP_KERNEL);
 	if (!qedi->ep_tbl)
 		return -ENOMEM;
-	port_id = prandom_u32_max(QEDI_LOCAL_PORT_RANGE);
+	port_id = get_random_u32_below(QEDI_LOCAL_PORT_RANGE);
 	if (qedi_init_id_tbl(&qedi->lcl_port_tbl, QEDI_LOCAL_PORT_RANGE,
 			     QEDI_LOCAL_PORT_MIN, port_id)) {
 		qedi_cm_free_mem(qedi);
diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c
index 629853662b82..a86db9761d00 100644
--- a/drivers/scsi/scsi_debug.c
+++ b/drivers/scsi/scsi_debug.c
@@ -5702,16 +5702,16 @@ static int schedule_resp(struct scsi_cmnd *cmnd, struct sdebug_dev_info *devip,
 			u64 ns = jiffies_to_nsecs(delta_jiff);
 
 			if (sdebug_random && ns < U32_MAX) {
-				ns = prandom_u32_max((u32)ns);
+				ns = get_random_u32_below((u32)ns);
 			} else if (sdebug_random) {
 				ns >>= 12;	/* scale to 4 usec precision */
 				if (ns < U32_MAX)	/* over 4 hours max */
-					ns = prandom_u32_max((u32)ns);
+					ns = get_random_u32_below((u32)ns);
 				ns <<= 12;
 			}
 			kt = ns_to_ktime(ns);
 		} else {	/* ndelay has a 4.2 second max */
-			kt = sdebug_random ? prandom_u32_max((u32)ndelay) :
+			kt = sdebug_random ? get_random_u32_below((u32)ndelay) :
 					     (u32)ndelay;
 			if (ndelay < INCLUSIVE_TIMING_MAX_NS) {
 				u64 d = ktime_get_boottime_ns() - ns_from_boot;