From patchwork Mon Jan 24 18:40:55 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 535982 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 F1E88C4332F for ; Mon, 24 Jan 2022 20:01:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1353220AbiAXUBM (ORCPT ); Mon, 24 Jan 2022 15:01:12 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59292 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1346894AbiAXT6B (ORCPT ); Mon, 24 Jan 2022 14:58:01 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 64F64C047CE9; Mon, 24 Jan 2022 11:27:53 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 017CA614B8; Mon, 24 Jan 2022 19:27:53 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id D4E6BC340E5; Mon, 24 Jan 2022 19:27:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1643052472; bh=twygcYS3MkXap/tO7SELMXxCodF8l1SPOiexz0O7FVw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=V6wAW3JhNW83z3ZL1DQh3dBSQaaDyoOBPT5qvQRrYRZrxRPG6SdvlPuUxlBVXJgEv 0pFtoFp9wfnpKtzRdlSekgvGn2Aj0wTO90IZY8K+490xt8FvkSipIvqlYbYEEIyF0T 966C6emvGR9NiAcQGUPjICWe2T+Jzt1DvchtETu4= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Mark-yw Chen , Sean Wang , Marcel Holtmann , Sasha Levin Subject: [PATCH 5.4 071/320] Bluetooth: btmtksdio: fix resume failure Date: Mon, 24 Jan 2022 19:40:55 +0100 Message-Id: <20220124183956.139201313@linuxfoundation.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220124183953.750177707@linuxfoundation.org> References: <20220124183953.750177707@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Sean Wang [ Upstream commit 561ae1d46a8ddcbc13162d5771f5ed6c8249e730 ] btmtksdio have to rely on MMC_PM_KEEP_POWER in pm_flags to avoid that SDIO power is being shut off during the device is in suspend. That fixes the SDIO command fails to access the bus after the device is resumed. 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 Signed-off-by: Marcel Holtmann Signed-off-by: Sasha Levin --- drivers/bluetooth/btmtksdio.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/bluetooth/btmtksdio.c b/drivers/bluetooth/btmtksdio.c index 304178be1ef40..c2eb64bcd5d5d 100644 --- a/drivers/bluetooth/btmtksdio.c +++ b/drivers/bluetooth/btmtksdio.c @@ -1041,6 +1041,8 @@ static int btmtksdio_runtime_suspend(struct device *dev) if (!bdev) return 0; + sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER); + sdio_claim_host(bdev->func); sdio_writel(bdev->func, C_FW_OWN_REQ_SET, MTK_REG_CHLPCR, &err);