From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.9]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 778D13BF662; Tue, 15 Sep 2026 13:13:44 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.9 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789478026; cv=none; b=S1pD+0vozhMfRVFlU7oG0mi27OkNpe7zhBqqEZ6wAW9I9FuuHLKgyouPt6kBZVGNAGHkoHMFFP/LImD33vyWRL+0kCX+hdu8n7zs3FzXGrghPq63t2lUNdcfDLjmDtY5fwc+3rvb7/mqJ5oPrJ3X3ZaA2d+ln3tMLXyMnLCQTzk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789478026; c=relaxed/simple; bh=PRL54LCiUIIEeMNsl/VPIKHNCvOrIYrCSHO1Io9SjtA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=qm7sqGLnNknNtHcysVH6gjM/9l9fcwxWTP18d97S1ixZOZKH4BGLKJeHGOFlNyDd6hEg6ZTiV74NH3ckF05c0nNrPjKzdhrUaXZA1RYh5cSEfQKUBDQ8Ov//7Aw9APlt/aYezrAGhJJf5BBasNmLrgdyu6cw6NvcOjuYcI50LFM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=pass smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=XxqxOo+l; arc=none smtp.client-ip=198.175.65.9 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="XxqxOo+l" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1789478025; x=1821014025; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=PRL54LCiUIIEeMNsl/VPIKHNCvOrIYrCSHO1Io9SjtA=; b=XxqxOo+lV+xkxBMYbYFtf/m379aL9T20pN2LXub/kFMTgQwS/DJFscka YcJuunGBibuOrPX7dszOUpGDzQc7x2NHMaX/y8OISezhi6Ot7o+gEjqH1 UPADf1Q5VA+Sf1KFf1Htj08j96NVA6IywWy08LRNP8Ehs4Zd96ueRwdi4 0FIfMUEFR5wmdFCfGc54YoJdZ9HkAineh+t25iaB765O3LTFqKXe7pUXF 9ljakpsgYAIUwPdMHPpKwgKfrx/hN8LGkda2Hy/bi1I2XcYaGaQBxAgME P+XRm/6kh8x385ijaFNNQyijv02J0AqzoD0j7J/DllSzH6u3yXinP2EZm Q==; X-CSE-ConnectionGUID: 5sk+nHtvQLmwX7j2MoSKIg== X-CSE-MsgGUID: NZhlIZ7MQ62nzRvLuy0Zqw== X-IronPort-AV: E=McAfee;i="6800,10657,11905"; a="112608442" X-IronPort-AV: E=Sophos;i="6.27,103,1787036400"; d="scan'208";a="112608442" Received: from fmviesa003.fm.intel.com ([10.60.135.143]) by orvoesa101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 15 Sep 2026 06:13:45 -0700 X-CSE-ConnectionGUID: W3igsj5HQ/WD94Av0kjtJA== X-CSE-MsgGUID: R4+iSvYfRWClYtj/1qlihA== X-ExtLoop1: 1 Received: from yungchua-desk.itwn.intel.com ([10.227.8.136]) by fmviesa003-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 15 Sep 2026 06:13:42 -0700 From: Bard Liao To: linux-sound@vger.kernel.org, vkoul@kernel.org, broonie@kernel.org, tiwai@suse.de Cc: vinod.koul@linaro.org, linux-kernel@vger.kernel.org, pierre-louis.bossart@linux.dev, peter.ujfalusi@linux.intel.com, bard.liao@intel.com Subject: [PATCH 2/3] soundwire: change sdw_show_ping_status type to int Date: Tue, 15 Sep 2026 21:13:26 +0800 Message-ID: <20260915131327.1783551-3-yung-chuan.liao@linux.intel.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260915131327.1783551-1-yung-chuan.liao@linux.intel.com> References: <20260915131327.1783551-1-yung-chuan.liao@linux.intel.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit So that the caller can get the ping results. Signed-off-by: Bard Liao Reviewed-by: Charles Keepax --- drivers/soundwire/bus.c | 16 +++++++++++----- include/linux/soundwire/sdw.h | 2 +- 2 files changed, 12 insertions(+), 6 deletions(-) diff --git a/drivers/soundwire/bus.c b/drivers/soundwire/bus.c index b49864ca683a..ee90f7d3233e 100644 --- a/drivers/soundwire/bus.c +++ b/drivers/soundwire/bus.c @@ -314,13 +314,16 @@ int sdw_transfer(struct sdw_bus *bus, struct sdw_msg *msg) * sdw_show_ping_status() - Direct report of PING status, to be used by Peripheral drivers * @bus: SDW bus * @sync_delay: Delay before reading status + * + * returns 0 if there is no peripherals attached, 1 if there are peripherals attached + * or a negative error code. */ -void sdw_show_ping_status(struct sdw_bus *bus, bool sync_delay) +int sdw_show_ping_status(struct sdw_bus *bus, bool sync_delay) { u32 status; if (!bus->ops->read_ping_status) - return; + return -ENOTSUPP; /* * wait for peripheral to sync if desired. 10-15ms should be more than @@ -335,10 +338,13 @@ void sdw_show_ping_status(struct sdw_bus *bus, bool sync_delay) mutex_unlock(&bus->msg_lock); - if (!status) + if (!status) { dev_warn(bus->dev, "%s: no peripherals attached\n", __func__); - else - dev_dbg(bus->dev, "PING status: %#x\n", status); + return 0; + } + + dev_dbg(bus->dev, "PING status: %#x\n", status); + return 1; } EXPORT_SYMBOL(sdw_show_ping_status); diff --git a/include/linux/soundwire/sdw.h b/include/linux/soundwire/sdw.h index 0cb7e4fef00e..1b03bfad2e6b 100644 --- a/include/linux/soundwire/sdw.h +++ b/include/linux/soundwire/sdw.h @@ -901,7 +901,7 @@ int sdw_bus_master_add(struct sdw_bus *bus, struct device *parent, struct fwnode_handle *fwnode); void sdw_bus_master_delete(struct sdw_bus *bus); -void sdw_show_ping_status(struct sdw_bus *bus, bool sync_delay); +int sdw_show_ping_status(struct sdw_bus *bus, bool sync_delay); /** * struct sdw_port_config: Master or Slave Port configuration -- 2.43.0