linux-kernel - [PATCH v2 2/2] Bluetooth: btmtksdio: Do close if SDIO card removed without close

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Message-ID: <20250422012156.586600-3-chris.lu@mediatek.com>
Date: Tue, 22 Apr 2025 09:21:56 +0800
From: Chris Lu <chris.lu@...iatek.com>
To: Marcel Holtmann <marcel@...tmann.org>, Johan Hedberg
	<johan.hedberg@...il.com>, Luiz Von Dentz <luiz.dentz@...il.com>
CC: Sean Wang <sean.wang@...iatek.com>, Jiande Lu <jiande.lu@...iatek.com>,
	Will Lee <will-cy.lee@...iatek.com>, SS Wu <ss.wu@...iatek.com>, Steve Lee
	<steve.lee@...iatek.com>, linux-bluetooth <linux-bluetooth@...r.kernel.org>,
	linux-kernel <linux-kernel@...r.kernel.org>, linux-mediatek
	<linux-mediatek@...ts.infradead.org>, Chris Lu <chris.lu@...iatek.com>
Subject: [PATCH v2 2/2] Bluetooth: btmtksdio: Do close if SDIO card removed without close

To prevent Bluetooth SDIO card from be physically removed suddenly,
driver needs to ensure btmtksdio_close is called before
btmtksdio_remove to disable interrupts and txrx workqueue.

Fixes: c4233afb9a ("Bluetooth: btmtksdio: Prevent enabling interrupts after IRQ handler removal")
Signed-off-by: Chris Lu <chris.lu@...iatek.com>
---
 drivers/bluetooth/btmtksdio.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/bluetooth/btmtksdio.c b/drivers/bluetooth/btmtksdio.c
index 3c66e3ee9834..c16a3518b8ff 100644
--- a/drivers/bluetooth/btmtksdio.c
+++ b/drivers/bluetooth/btmtksdio.c
@@ -1447,11 +1447,15 @@ static void btmtksdio_remove(struct sdio_func *func)
 	if (!bdev)
 		return;
 
+	hdev = bdev->hdev;
+
+	/* Make sure to call btmtksdio_close before removing sdio card */
+	if (test_bit(BTMTKSDIO_FUNC_ENABLED, &bdev->tx_state))
+		btmtksdio_close(hdev);
+
 	/* Be consistent the state in btmtksdio_probe */
 	pm_runtime_get_noresume(bdev->dev);
 
-	hdev = bdev->hdev;
-
 	sdio_set_drvdata(func, NULL);
 	hci_unregister_dev(hdev);
 	hci_free_dev(hdev);
-- 
2.45.2