From: Kamaljit Singh <kamaljit.singh@opensource.wdc.com>
Date: Fri, 5 Sep 2025 23:25:49 +0000 (-0700)
Subject: nvme-core: add method to check for an I/O controller
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=a5b852797411a65b99b467766a03be8f24284ddc;p=thirdparty%2Fkernel%2Fstable.git

nvme-core: add method to check for an I/O controller

Add nvme_is_io_ctrl() to check if the controller is of type I/O
controller. Uses negative logic by excluding an administrative
controller and a discovery controller.

Signed-off-by: Kamaljit Singh <kamaljit.singh@opensource.wdc.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Keith Busch <kbusch@kernel.org>
---

diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index 812c1565114fd..0f20adcebcf15 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -3163,6 +3163,11 @@ static inline bool nvme_admin_ctrl(struct nvme_ctrl *ctrl)
 	return ctrl->cntrltype == NVME_CTRL_ADMIN;
 }
 
+static inline bool nvme_is_io_ctrl(struct nvme_ctrl *ctrl)
+{
+	return !nvme_discovery_ctrl(ctrl) && !nvme_admin_ctrl(ctrl);
+}
+
 static bool nvme_validate_cntlid(struct nvme_subsystem *subsys,
 		struct nvme_ctrl *ctrl, struct nvme_id_ctrl *id)
 {