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authorTim Jiang <tjiang@codeaurora.org>2021-06-01 12:57:10 +0300
committerMarcel Holtmann <marcel@holtmann.org>2021-06-26 08:12:39 +0300
commit4f00bfb372674d586c4a261bfc595cbce101fbb6 (patch)
treebf15c4466101e34974e2efa9574997c2f13e741e /drivers/bluetooth
parentca17a5cccf8b6d35dab4729bea8f4350bc0b4caf (diff)
downloadlinux-4f00bfb372674d586c4a261bfc595cbce101fbb6.tar.xz
Bluetooth: btusb: fix bt fiwmare downloading failure issue for qca btsoc.
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>
Diffstat (limited to 'drivers/bluetooth')
-rw-r--r--drivers/bluetooth/btusb.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index ad07dbedc284..a9855a2dd561 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -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);