From patchwork Fri Nov 19 22:25:44 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sean Wang X-Patchwork-Id: 12629645 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 67021C433EF for ; Fri, 19 Nov 2021 22:26:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235941AbhKSW27 (ORCPT ); Fri, 19 Nov 2021 17:28:59 -0500 Received: from mailgw02.mediatek.com ([210.61.82.184]:37822 "EHLO mailgw02.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S235928AbhKSW26 (ORCPT ); Fri, 19 Nov 2021 17:28:58 -0500 X-UUID: 1da5324359b24343b5ff1f8ccbbe61b2-20211120 X-UUID: 1da5324359b24343b5ff1f8ccbbe61b2-20211120 Received: from mtkcas10.mediatek.inc [(172.21.101.39)] by mailgw02.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 1733938610; Sat, 20 Nov 2021 06:25:53 +0800 Received: from mtkcas10.mediatek.inc (172.21.101.39) by mtkmbs07n1.mediatek.inc (172.21.101.16) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Sat, 20 Nov 2021 06:25:52 +0800 Received: from mtkswgap22.mediatek.inc (172.21.77.33) by mtkcas10.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Sat, 20 Nov 2021 06:25:51 +0800 From: To: , CC: , , , , , , , , , , , , , , , , , , , , , , , , , , , Mark-yw Chen Subject: [PATCH 2/4] Bluetooth: btmtksdio: handle runtime pm only when sdio_func is available Date: Sat, 20 Nov 2021 06:25:44 +0800 Message-ID: <07cd9db8ef295bfe3e6b42796ccb8c9fb59dd9ba.1637360076.git.objelf@gmail.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <4176102d8bbc36e5156e348df666a3e12c5a3d75.1637360076.git.objelf@gmail.com> References: <4176102d8bbc36e5156e348df666a3e12c5a3d75.1637360076.git.objelf@gmail.com> MIME-Version: 1.0 X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org From: Sean Wang Runtime pm ops is not aware the sdio_func status that is probably being disabled by btmtksdio_close. Thus, we are only able to access the sdio_func for the runtime pm operations only when the sdio_func is available. Fixes: 7f3c563c575e7 ("Bluetooth: btmtksdio: Add runtime PM support to SDIO based Bluetooth") Co-developed-by: Mark-yw Chen Signed-off-by: Mark-yw Chen Signed-off-by: Sean Wang --- drivers/bluetooth/btmtksdio.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/bluetooth/btmtksdio.c b/drivers/bluetooth/btmtksdio.c index 4f3412ad8fca..4c46c62e4623 100644 --- a/drivers/bluetooth/btmtksdio.c +++ b/drivers/bluetooth/btmtksdio.c @@ -1037,6 +1037,9 @@ static int btmtksdio_runtime_suspend(struct device *dev) if (!bdev) return 0; + if (!test_bit(HCI_RUNNING, &bdev->hdev->flags)) + return 0; + sdio_claim_host(bdev->func); sdio_writel(bdev->func, C_FW_OWN_REQ_SET, MTK_REG_CHLPCR, &err); @@ -1064,6 +1067,9 @@ static int btmtksdio_runtime_resume(struct device *dev) if (!bdev) return 0; + if (!test_bit(HCI_RUNNING, &bdev->hdev->flags)) + return 0; + sdio_claim_host(bdev->func); sdio_writel(bdev->func, C_FW_OWN_REQ_CLR, MTK_REG_CHLPCR, &err);