From patchwork Wed Mar 15 10:35:58 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wen-chien Jesse Sung X-Patchwork-Id: 739104 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from huckleberry.canonical.com (huckleberry.canonical.com [91.189.94.19]) by ozlabs.org (Postfix) with ESMTP id 3vjp1F370Tz9ryr; Wed, 15 Mar 2017 21:36:17 +1100 (AEDT) Received: from localhost ([127.0.0.1] helo=huckleberry.canonical.com) by huckleberry.canonical.com with esmtp (Exim 4.76) (envelope-from ) id 1co6Hr-0004sx-RQ; Wed, 15 Mar 2017 10:36:11 +0000 Received: from youngberry.canonical.com ([91.189.89.112]) by huckleberry.canonical.com with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.76) (envelope-from ) id 1co6Hl-0004s7-8F for kernel-team@lists.ubuntu.com; Wed, 15 Mar 2017 10:36:05 +0000 Received: from 1.general.jesse.uk.vpn ([10.172.197.96] helo=cola.voip.idv.tw) by youngberry.canonical.com with esmtpsa (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.76) (envelope-from ) id 1co6Hk-00005J-EE; Wed, 15 Mar 2017 10:36:04 +0000 From: Wen-chien Jesse Sung To: kernel-team@lists.ubuntu.com Subject: [X/Y/Z][PATCH 2/2] Bluetooth: btbcm: Add a delay for module reset Date: Wed, 15 Mar 2017 18:35:58 +0800 Message-Id: <1489574158-23064-2-git-send-email-jesse.sung@canonical.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1489574158-23064-1-git-send-email-jesse.sung@canonical.com> References: <1489574158-23064-1-git-send-email-jesse.sung@canonical.com> X-BeenThere: kernel-team@lists.ubuntu.com X-Mailman-Version: 2.1.14 Precedence: list List-Id: Kernel team discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: kernel-team-bounces@lists.ubuntu.com Sender: kernel-team-bounces@lists.ubuntu.com BugLink: https://launchpad.net/bugs/1483101 Some btbcm devices require more time to complete its reset process. They won't reply any hci command until reset is done. [ 17.218554] Bluetooth: hci0 command 0x1001 tx timeout [ 25.214999] Bluetooth: hci0: BCM: Reading local version info failed (-110) Signed-off-by: Wen-chien Jesse Sung Signed-off-by: Marcel Holtmann (cherry picked from commit 3af3a594e111474fab03d872f41760e10d4c17c4) Signed-off-by: Wen-chien Jesse Sung --- drivers/bluetooth/btbcm.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/bluetooth/btbcm.c b/drivers/bluetooth/btbcm.c index 0b69794..c631238 100644 --- a/drivers/bluetooth/btbcm.c +++ b/drivers/bluetooth/btbcm.c @@ -178,6 +178,9 @@ static int btbcm_reset(struct hci_dev *hdev) } kfree_skb(skb); + /* 100 msec delay for module to complete reset process */ + msleep(100); + return 0; }