This is a note to let you know that I've just added the patch titled
Bluetooth: Fix sending HCI commands after reset
to the 3.7-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
bluetooth-fix-sending-hci-commands-after-reset.patch
and it can be found in the queue-3.7 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.
>From dbccd791a3fbbdac12c33834b73beff3984988e9 Mon Sep 17 00:00:00 2001
From: Szymon Janc <szymon.j...@tieto.com>
Date: Tue, 11 Dec 2012 08:51:19 +0100
Subject: Bluetooth: Fix sending HCI commands after reset
From: Szymon Janc <szymon.j...@tieto.com>
commit dbccd791a3fbbdac12c33834b73beff3984988e9 upstream.
After sending reset command wait for its command complete event before
sending next command. Some chips sends CC event for command received
before reset if reset was send before chip replied with CC.
This is also required by specification that host shall not send
additional HCI commands before receiving CC for reset.
< HCI Command: Reset (0x03|0x0003) plen 0 [hci0]
18.404612
> HCI Event: Command Complete (0x0e) plen 4 [hci0]
> 18.405850
Write Extended Inquiry Response (0x03|0x0052) ncmd 1
Status: Success (0x00)
< HCI Command: Read Local Supported Features (0x04|0x0003) plen 0 [hci0]
18.406079
> HCI Event: Command Complete (0x0e) plen 4 [hci0]
> 18.407864
Reset (0x03|0x0003) ncmd 1
Status: Success (0x00)
< HCI Command: Read Local Supported Features (0x04|0x0003) plen 0 [hci0]
18.408062
> HCI Event: Command Complete (0x0e) plen 12 [hci0]
> 18.408835
Signed-off-by: Szymon Janc <szymon.j...@tieto.com>
Acked-by: Johan Hedberg <johan.hedb...@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.pado...@collabora.co.uk>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
net/bluetooth/hci_event.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -2394,7 +2394,7 @@ static void hci_cmd_complete_evt(struct
if (ev->opcode != HCI_OP_NOP)
del_timer(&hdev->cmd_timer);
- if (ev->ncmd) {
+ if (ev->ncmd && !test_bit(HCI_RESET, &hdev->flags)) {
atomic_set(&hdev->cmd_cnt, 1);
if (!skb_queue_empty(&hdev->cmd_q))
queue_work(hdev->workqueue, &hdev->cmd_work);
Patches currently in stable-queue which might be from szymon.j...@tieto.com are
queue-3.7/bluetooth-fix-sending-hci-commands-after-reset.patch
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