]> git.baikalelectronics.ru Git - kernel.git/commitdiff
Bluetooth: btusb: fix bt fiwmare downloading failure issue for qca btsoc.
authorTim Jiang <tjiang@codeaurora.org>
Tue, 1 Jun 2021 09:57:10 +0000 (17:57 +0800)
committerMarcel Holtmann <marcel@holtmann.org>
Sat, 26 Jun 2021 05:12:39 +0000 (07:12 +0200)
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>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
drivers/bluetooth/btusb.c

index ad07dbedc28431c886d9ccf05c89e377b7b2a3fb..a9855a2dd5616d3ef9da27b8bc437bb1c732441d 100644 (file)
@@ -4080,6 +4080,11 @@ 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);