[PATCH] block: fix arg type in `blk_mq_update_nr_hw_queues`

[Andreas Hindborg <a.hindborg@kernel.org>]

The type of the argument `nr_hw_queues` in the function
`blk_mq_update_nr_hw_queues` is a signed integer. This is wrong,
considering the field `nr_hw_queues` of `struct blk_mq_tag_set` is
unsigned. Thus, change the type of the parameter to unsigned.

Cascade the change to downstream functions.

Signed-off-by: Andreas Hindborg <a.hindborg@kernel.org>
---
 block/blk-mq.c         | 13 +++++++------
 include/linux/blk-mq.h |  2 +-
 2 files changed, 8 insertions(+), 7 deletions(-)

diff --git a/block/blk-mq.c b/block/blk-mq.c
index 4c5c16cce4f8..5eb9b52f3146 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -4816,10 +4816,10 @@ static void blk_mq_update_queue_map(struct blk_mq_tag_set *set)
 
 static struct blk_mq_tags **blk_mq_prealloc_tag_set_tags(
 				struct blk_mq_tag_set *set,
-				int new_nr_hw_queues)
+				unsigned int new_nr_hw_queues)
 {
 	struct blk_mq_tags **new_tags;
-	int i;
+	unsigned int i;
 
 	if (set->nr_hw_queues >= new_nr_hw_queues)
 		return NULL;
@@ -5134,12 +5134,12 @@ static int blk_mq_elv_switch_none(struct request_queue *q,
 }
 
 static void __blk_mq_update_nr_hw_queues(struct blk_mq_tag_set *set,
-							int nr_hw_queues)
+					 unsigned int nr_hw_queues)
 {
 	struct request_queue *q;
-	int prev_nr_hw_queues = set->nr_hw_queues;
+	unsigned int prev_nr_hw_queues = set->nr_hw_queues;
 	unsigned int memflags;
-	int i;
+	unsigned int i;
 	struct xarray elv_tbl;
 	struct blk_mq_tags **new_tags;
 	bool queues_frozen = false;
@@ -5234,7 +5234,8 @@ static void __blk_mq_update_nr_hw_queues(struct blk_mq_tag_set *set,
 		__blk_mq_free_map_and_rqs(set, i);
 }
 
-void blk_mq_update_nr_hw_queues(struct blk_mq_tag_set *set, int nr_hw_queues)
+void blk_mq_update_nr_hw_queues(struct blk_mq_tag_set *set,
+				unsigned int nr_hw_queues)
 {
 	down_write(&set->update_nr_hwq_lock);
 	mutex_lock(&set->tag_list_lock);
diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h
index 18a2388ba581..f73b4a1f16db 100644
--- a/include/linux/blk-mq.h
+++ b/include/linux/blk-mq.h
@@ -974,7 +974,7 @@ unsigned int blk_mq_num_online_queues(unsigned int max_queues);
 void blk_mq_map_queues(struct blk_mq_queue_map *qmap);
 void blk_mq_map_hw_queues(struct blk_mq_queue_map *qmap,
 			  struct device *dev, unsigned int offset);
-void blk_mq_update_nr_hw_queues(struct blk_mq_tag_set *set, int nr_hw_queues);
+void blk_mq_update_nr_hw_queues(struct blk_mq_tag_set *set, unsigned int nr_hw_queues);
 
 void blk_mq_quiesce_queue_nowait(struct request_queue *q);
 

---
base-commit: 7fd2df204f342fc17d1a0bfcd474b24232fb0f32
change-id: 20260608-update-hw-nodes-arg-940ecec0380a

Best regards,
--  
Andreas Hindborg <a.hindborg@kernel.org>