diff options
| author | Sean Wang <sean.wang@mediatek.com> | 2022-01-12 10:39:17 +0300 |
|---|---|---|
| committer | Marcel Holtmann <marcel@holtmann.org> | 2022-01-22 01:49:27 +0300 |
| commit | db3f1f9b5d88d8d7f9eaa486f71784dd319285ff (patch) | |
| tree | d610a365f302ba03f3ad25add5fc7ef8cf8943e4 /drivers/bluetooth/btmtksdio.c | |
| parent | e98aa38cafec489ec025572c529dfb3d64559718 (diff) | |
| download | linux-db3f1f9b5d88d8d7f9eaa486f71784dd319285ff.tar.xz | |
Bluetooth: btmtksdio: mask out interrupt status
Currently, there is a loop in btmtksdio_txrx_work() which iteratively
executes until the variable int_status is zero.
But the variable int_status should be masked out with the actual interrupt
sources (MTK_REG_CHISR bit 0-15) before we check the loop condition.
Otherwise, RX_PKT_LEN (MTK_REG_CHISR bit 16-31) which is read-only and
unclearable would cause the loop to get stuck on some chipsets like
MT7663s.
Fixes: 26270bc189ea ("Bluetooth: btmtksdio: move interrupt service to work")
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'drivers/bluetooth/btmtksdio.c')
| -rw-r--r-- | drivers/bluetooth/btmtksdio.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/bluetooth/btmtksdio.c b/drivers/bluetooth/btmtksdio.c index 491f029452ca..8be763ab3bf4 100644 --- a/drivers/bluetooth/btmtksdio.c +++ b/drivers/bluetooth/btmtksdio.c @@ -92,6 +92,7 @@ MODULE_DEVICE_TABLE(sdio, btmtksdio_table); #define TX_EMPTY BIT(2) #define TX_FIFO_OVERFLOW BIT(8) #define FW_MAILBOX_INT BIT(15) +#define INT_MASK GENMASK(15, 0) #define RX_PKT_LEN GENMASK(31, 16) #define MTK_REG_CSICR 0xc0 @@ -565,6 +566,7 @@ static void btmtksdio_txrx_work(struct work_struct *work) * FIFO. */ sdio_writel(bdev->func, int_status, MTK_REG_CHISR, NULL); + int_status &= INT_MASK; if ((int_status & FW_MAILBOX_INT) && bdev->data->chipid == 0x7921) { |