Bluetooth: btnxpuart: Fix driver sending truncated data

BugLink: https://bugs.launchpad.net/bugs/2106770

[ 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: 689ca16e52 ("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>
Signed-off-by: Manuel Diewald <manuel.diewald@canonical.com>
Signed-off-by: Mehmet Basaran <mehmet.basaran@canonical.com>

This commit is contained in:

Neeraj Sanjay Kale

2024-12-20 18:32:52 +05:30

committed by

Mehmet Basaran

parent 459ca87898

commit 12aa4eebf2

1 changed files with 1 additions and 0 deletions

									
										drivers/bluetooth/btnxpuart.c
									
		+1
		
												View File
												
				@@ -1280,6 +1280,7 @@ 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);