diff options
| author | Sean Wang <sean.wang@mediatek.com> | 2025-03-11 18:25:22 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-05-29 11:02:07 +0200 |
| commit | 7ec409ee15ac18f3518be17d99ac6e16c3f70f60 (patch) | |
| tree | 489186a44c62f677371d188396baab7afb67d805 | |
| parent | 7cfde2a48280086a23e4ec59bfb591ed2942061a (diff) | |
Bluetooth: btmtksdio: Prevent enabling interrupts after IRQ handler removal
[ Upstream commit 6ac4233afb9a389a7629b7f812395d1d1eca5a83 ]
Ensure interrupts are not re-enabled when the IRQ handler has already been
removed. This prevents unexpected IRQ handler execution due to stale or
unhandled interrupts.
Modify btmtksdio_txrx_work to check if bdev->func->irq_handler exists
before calling sdio_writel to enable interrupts.
Co-developed-by: Pedro Tsai <pedro.tsai@mediatek.com>
Signed-off-by: Pedro Tsai <pedro.tsai@mediatek.com>
Co-developed-by: Felix Freimann <felix.freimann@mediatek.com>
Signed-off-by: Felix Freimann <felix.freimann@mediatek.com>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/bluetooth/btmtksdio.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/bluetooth/btmtksdio.c b/drivers/bluetooth/btmtksdio.c index 11d33cd7b08f..d4ea1ff07b3e 100644 --- a/drivers/bluetooth/btmtksdio.c +++ b/drivers/bluetooth/btmtksdio.c @@ -610,7 +610,8 @@ static void btmtksdio_txrx_work(struct work_struct *work) } while (int_status || time_is_before_jiffies(txrx_timeout)); /* Enable interrupt */ - sdio_writel(bdev->func, C_INT_EN_SET, MTK_REG_CHLPCR, NULL); + if (bdev->func->irq_handler) + sdio_writel(bdev->func, C_INT_EN_SET, MTK_REG_CHLPCR, NULL); sdio_release_host(bdev->func); |