From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751699AbdF1Vxd (ORCPT ); Wed, 28 Jun 2017 17:53:33 -0400 Received: from mail-pg0-f51.google.com ([74.125.83.51]:33512 "EHLO mail-pg0-f51.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751501AbdF1Vx2 (ORCPT ); Wed, 28 Jun 2017 17:53:28 -0400 From: Bjorn Andersson To: Ohad Ben-Cohen , Bjorn Andersson Cc: linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org, Rob Clark Subject: [PATCH v2] rpmsg: Make modalias work for DeviceTree based devices Date: Wed, 28 Jun 2017 14:53:23 -0700 Message-Id: <20170628215323.5658-1-bjorn.andersson@linaro.org> X-Mailer: git-send-email 2.12.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org When rpmsg devices are expected to be matched based on their compatible the modalias should reflect this, so that module autoloading has a chance to match and load the appropriate module. Tested-by: Rob Clark Reported-by: Rob Clark Signed-off-by: Bjorn Andersson --- Changes since v1: - Also update rpmsg_uevent() drivers/rpmsg/rpmsg_core.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/rpmsg/rpmsg_core.c b/drivers/rpmsg/rpmsg_core.c index ad3d2a9df287..067650c5bcb6 100644 --- a/drivers/rpmsg/rpmsg_core.c +++ b/drivers/rpmsg/rpmsg_core.c @@ -343,6 +343,11 @@ static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf) { struct rpmsg_device *rpdev = to_rpmsg_device(dev); + ssize_t len; + + len = of_device_modalias(dev, buf, PAGE_SIZE); + if (len != -ENODEV) + return len; return sprintf(buf, RPMSG_DEVICE_MODALIAS_FMT "\n", rpdev->id.name); } @@ -387,6 +392,11 @@ static int rpmsg_dev_match(struct device *dev, struct device_driver *drv) static int rpmsg_uevent(struct device *dev, struct kobj_uevent_env *env) { struct rpmsg_device *rpdev = to_rpmsg_device(dev); + int ret; + + ret = of_device_uevent_modalias(dev, env); + if (ret != -ENODEV) + return ret; return add_uevent_var(env, "MODALIAS=" RPMSG_DEVICE_MODALIAS_FMT, rpdev->id.name); -- 2.12.0