6.12-stable review patch. If anyone has any objections, please let me know.
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From: Neeraj Sanjay Kale neeraj.sanjaykale@nxp.com
[ Upstream commit 8023dd2204254a70887f5ee58d914bf70a060b9d ]
This fixes the apparent controller hang issue seen during stress test where the host sends a truncated payload, followed by HCI commands. The controller treats these HCI commands as a part of previously truncated payload, leading to command timeouts.
Adding a serdev_device_wait_until_sent() call after serdev_device_write_buf() fixed the issue.
Fixes: 689ca16e5232 ("Bluetooth: NXP: Add protocol support for NXP Bluetooth chipsets") Signed-off-by: Neeraj Sanjay Kale neeraj.sanjaykale@nxp.com Signed-off-by: Luiz Augusto von Dentz luiz.von.dentz@intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/bluetooth/btnxpuart.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/bluetooth/btnxpuart.c b/drivers/bluetooth/btnxpuart.c index 5ea0d23e88c0..a028984f2782 100644 --- a/drivers/bluetooth/btnxpuart.c +++ b/drivers/bluetooth/btnxpuart.c @@ -1336,6 +1336,7 @@ static void btnxpuart_tx_work(struct work_struct *work)
while ((skb = nxp_dequeue(nxpdev))) { len = serdev_device_write_buf(serdev, skb->data, skb->len); + serdev_device_wait_until_sent(serdev, 0); hdev->stat.byte_tx += len;
skb_pull(skb, len);