From 3342afcbaf42c2e6a4604c84e267901411e790ca Mon Sep 17 00:00:00 2001
From: John Baldwin <jhb@FreeBSD.org>
Date: Wed, 16 Oct 2024 14:08:49 -0400
Subject: [PATCH] bus_generic_detach: Remove redundant check

device_detach() checks the device state and only calls a driver's
DEVICE_DETACH method if the device is attached but not busy.

Reviewed by:	imp
Differential Revision:	https://reviews.freebsd.org/D47156
---
 sys/kern/subr_bus.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/sys/kern/subr_bus.c b/sys/kern/subr_bus.c
index 7140ca007b71..7c21325f8684 100644
--- a/sys/kern/subr_bus.c
+++ b/sys/kern/subr_bus.c
@@ -3405,9 +3405,6 @@ bus_generic_detach(device_t dev)
 	device_t child;
 	int error;
 
-	if (dev->state != DS_ATTACHED)
-		return (EBUSY);
-
 	/*
 	 * Detach children in the reverse order.
 	 * See bus_generic_suspend for details.