From: Sean Wang sean.wang@mediatek.com
[ 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 --- drivers/bluetooth/btmtksdio.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/bluetooth/btmtksdio.c b/drivers/bluetooth/btmtksdio.c index bd5464bde174f..edd5eead1e93b 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);