diff mbox series

[v3] Bluetooth: btusb: fix bt fiwmare downloading failure issue for qca btsoc.

Message ID 1622541430-17072-1-git-send-email-zijuhu@codeaurora.org (mailing list archive)
State Not Applicable, archived
Headers show
Series [v3] Bluetooth: btusb: fix bt fiwmare downloading failure issue for qca btsoc. | expand

Commit Message

Zijun Hu June 1, 2021, 9:57 a.m. UTC 
From: Tim Jiang <tjiang@codeaurora.org>

This is btsoc timing issue, after host start to downloading bt firmware,
ep2 need time to switch from function acl to function dfu, so host add
20ms delay as workaround.

Signed-off-by: Tim Jiang <tjiang@codeaurora.org>
---
 drivers/bluetooth/btusb.c | 5 +++++
 1 file changed, 5 insertions(+)

Comments

Marcel Holtmann June 2, 2021, 8:11 p.m. UTC | #1 
Hi Zijun,

> This is btsoc timing issue, after host start to downloading bt firmware,
> ep2 need time to switch from function acl to function dfu, so host add
> 20ms delay as workaround.
> 
> Signed-off-by: Tim Jiang <tjiang@codeaurora.org>
> ---
> drivers/bluetooth/btusb.c | 5 +++++
> 1 file changed, 5 insertions(+)

patch has been applied to bluetooth-next tree.

Regards

Marcel
diff mbox series

Patch

diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index 5245714..bd5242f 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -4065,6 +4065,11 @@  static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
 	sent += size;
 	count -= size;
 
+	/* ep2 need time to switch from function acl to function dfu,
+	 * so we add 20ms delay here.
+	 */
+	msleep(20);
+
 	while (count) {
 		size = min_t(size_t, count, QCA_DFU_PACKET_LEN);