From patchwork Wed Jan 12 07:39:13 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sean Wang X-Patchwork-Id: 531627 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5204FC433FE for ; Wed, 12 Jan 2022 07:39:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1351242AbiALHja (ORCPT ); Wed, 12 Jan 2022 02:39:30 -0500 Received: from mailgw02.mediatek.com ([210.61.82.184]:38144 "EHLO mailgw02.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1351234AbiALHj2 (ORCPT ); Wed, 12 Jan 2022 02:39:28 -0500 X-UUID: e30dc72d7c7f4138b558c580c1861efd-20220112 X-UUID: e30dc72d7c7f4138b558c580c1861efd-20220112 Received: from mtkexhb01.mediatek.inc [(172.21.101.102)] by mailgw02.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 739688083; Wed, 12 Jan 2022 15:39:25 +0800 Received: from mtkcas11.mediatek.inc (172.21.101.40) by mtkmbs10n2.mediatek.inc (172.21.101.183) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.2.792.3; Wed, 12 Jan 2022 15:39:23 +0800 Received: from mtkswgap22.mediatek.inc (172.21.77.33) by mtkcas11.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Wed, 12 Jan 2022 15:39:23 +0800 From: To: , CC: , , , , , , , , , , , , , , , , , , , , , , , , , , , Mark Chen Subject: [PATCH 3/7] Bluetooth: mt7921s: fix bus hang with wrong privilege Date: Wed, 12 Jan 2022 15:39:13 +0800 Message-ID: X-Mailer: git-send-email 1.7.9.5 In-Reply-To: References: MIME-Version: 1.0 X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org From: Mark Chen According to chip hw flow, mt7921s need to re-acquire privilege again before normal running. Otherwise, the bus may be stuck in an abnormal status. Fixes: c603bf1f94d0 ("Bluetooth: btmtksdio: add MT7921s Bluetooth support") Co-developed-by: Sean Wang Signed-off-by: Sean Wang Signed-off-by: Mark Chen --- drivers/bluetooth/btmtksdio.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/bluetooth/btmtksdio.c b/drivers/bluetooth/btmtksdio.c index 8cbd49013d86..0951bb10d117 100644 --- a/drivers/bluetooth/btmtksdio.c +++ b/drivers/bluetooth/btmtksdio.c @@ -960,6 +960,14 @@ static int btmtksdio_setup(struct hci_dev *hdev) if (err < 0) return err; + err = btmtksdio_fw_pmctrl(bdev); + if (err < 0) + return err; + + err = btmtksdio_drv_pmctrl(bdev); + if (err < 0) + return err; + /* Enable SCO over I2S/PCM */ err = btmtksdio_sco_setting(hdev); if (err < 0) {