linux-kernel - [PATCH v2 2/2] ide: Remove BUG_ON(in_interrupt() || irqs_disabled()) from ide

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Date:   Fri, 20 Nov 2020 10:24:21 +0100
From:   Sebastian Andrzej Siewior <bigeasy@...utronix.de>
To:     linux-ide@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org,
        "David S. Miller" <davem@...emloft.net>,
        Jens Axboe <axboe@...nel.dk>,
        Andrew Morton <akpm@...ux-foundation.org>, tglx@...utronix.de,
        Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Subject: [PATCH v2 2/2] ide: Remove BUG_ON(in_interrupt() || irqs_disabled()) from ide_unregister()

Both BUG_ON() were introduced in commit
   4015c949fb465 ("[PATCH] update ide core")

when ide_unregister() was extended with semaphore based locking. Both
checks won't complain about disabled preemption which is also wrong.

The might_sleep() in today's mutex_lock() will complain about the
missuses.

Remove the BUG_ON() statements.

Cc: "David S. Miller" <davem@...emloft.net>
Cc: linux-ide@...r.kernel.org
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Acked-by: Jens Axboe <axboe@...nel.dk>
---
 drivers/ide/ide-probe.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/drivers/ide/ide-probe.c b/drivers/ide/ide-probe.c
index 1c1567bb51942..aefd74c0d8628 100644
--- a/drivers/ide/ide-probe.c
+++ b/drivers/ide/ide-probe.c
@@ -1539,9 +1539,6 @@ EXPORT_SYMBOL_GPL(ide_port_unregister_devices);
 
 static void ide_unregister(ide_hwif_t *hwif)
 {
-	BUG_ON(in_interrupt());
-	BUG_ON(irqs_disabled());
-
 	mutex_lock(&ide_cfg_mtx);
 
 	if (hwif->present) {
-- 
2.29.2