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[68.111.223.48]) by smtp.gmail.com with ESMTPSA id iw10sm8887131pac.14.2016.09.01.15.28.23 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Thu, 01 Sep 2016 15:28:23 -0700 (PDT) From: Bjorn Andersson To: Ohad Ben-Cohen , Bjorn Andersson Subject: [PATCH v2 10/17] rpmsg: Move helper for finding rpmsg devices to core Date: Thu, 1 Sep 2016 15:28:02 -0700 Message-Id: <1472768889-3906-11-git-send-email-bjorn.andersson@linaro.org> X-Mailer: git-send-email 2.5.0 In-Reply-To: <1472768889-3906-1-git-send-email-bjorn.andersson@linaro.org> References: <1472768889-3906-1-git-send-email-bjorn.andersson@linaro.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20160901_152842_959904_D100C3D2 X-CRM114-Status: GOOD ( 19.21 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-arm-msm@vger.kernel.org, linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP Extract and move the helper function for finding rpmsg child devices to the core. Signed-off-by: Bjorn Andersson --- Changes since v1: - Extracted this from the big move to rpmsg_core.c in v1 drivers/rpmsg/rpmsg_core.c | 33 +++++++++++++++++++++++++++++++++ drivers/rpmsg/rpmsg_internal.h | 31 +++++++++++++++++++++++++++++++ drivers/rpmsg/virtio_rpmsg_bus.c | 29 ++++------------------------- 3 files changed, 68 insertions(+), 25 deletions(-) create mode 100644 drivers/rpmsg/rpmsg_internal.h diff --git a/drivers/rpmsg/rpmsg_core.c b/drivers/rpmsg/rpmsg_core.c index 3bee8e03a387..81101775fed0 100644 --- a/drivers/rpmsg/rpmsg_core.c +++ b/drivers/rpmsg/rpmsg_core.c @@ -22,6 +22,8 @@ #include #include +#include "rpmsg_internal.h" + /** * rpmsg_create_ept() - create a new rpmsg_endpoint * @rpdev: rpmsg channel device @@ -229,3 +231,34 @@ int rpmsg_trysend_offchannel(struct rpmsg_endpoint *ept, u32 src, u32 dst, return ept->ops->trysend_offchannel(ept, src, dst, data, len); } EXPORT_SYMBOL(rpmsg_trysend_offchannel); + +/* + * match an rpmsg channel with a channel info struct. + * this is used to make sure we're not creating rpmsg devices for channels + * that already exist. + */ +static int rpmsg_device_match(struct device *dev, void *data) +{ + struct rpmsg_channel_info *chinfo = data; + struct rpmsg_device *rpdev = to_rpmsg_device(dev); + + if (chinfo->src != RPMSG_ADDR_ANY && chinfo->src != rpdev->src) + return 0; + + if (chinfo->dst != RPMSG_ADDR_ANY && chinfo->dst != rpdev->dst) + return 0; + + if (strncmp(chinfo->name, rpdev->id.name, RPMSG_NAME_SIZE)) + return 0; + + /* found a match ! */ + return 1; +} + +struct device *rpmsg_find_device(struct device *parent, + struct rpmsg_channel_info *chinfo) +{ + return device_find_child(parent, chinfo, rpmsg_device_match); + +} +EXPORT_SYMBOL(rpmsg_find_device); diff --git a/drivers/rpmsg/rpmsg_internal.h b/drivers/rpmsg/rpmsg_internal.h new file mode 100644 index 000000000000..205debf4ea65 --- /dev/null +++ b/drivers/rpmsg/rpmsg_internal.h @@ -0,0 +1,31 @@ +/* + * remote processor messaging bus internals + * + * Copyright (C) 2011 Texas Instruments, Inc. + * Copyright (C) 2011 Google, Inc. + * + * Ohad Ben-Cohen + * Brian Swetland + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef __RPMSG_INTERNAL_H__ +#define __RPMSG_INTERNAL_H__ + +#include + +#define to_rpmsg_device(d) container_of(d, struct rpmsg_device, dev) +#define to_rpmsg_driver(d) container_of(d, struct rpmsg_driver, drv) + +struct device *rpmsg_find_device(struct device *parent, + struct rpmsg_channel_info *chinfo); + +#endif diff --git a/drivers/rpmsg/virtio_rpmsg_bus.c b/drivers/rpmsg/virtio_rpmsg_bus.c index 184663276e51..488fd93a290c 100644 --- a/drivers/rpmsg/virtio_rpmsg_bus.c +++ b/drivers/rpmsg/virtio_rpmsg_bus.c @@ -35,6 +35,8 @@ #include #include +#include "rpmsg_internal.h" + /** * struct virtproc_info - virtual remote processor state * @vdev: the virtio device @@ -452,29 +454,6 @@ static void rpmsg_release_device(struct device *dev) kfree(rpdev); } -/* - * match an rpmsg channel with a channel info struct. - * this is used to make sure we're not creating rpmsg devices for channels - * that already exist. - */ -static int rpmsg_device_match(struct device *dev, void *data) -{ - struct rpmsg_channel_info *chinfo = data; - struct rpmsg_device *rpdev = to_rpmsg_device(dev); - - if (chinfo->src != RPMSG_ADDR_ANY && chinfo->src != rpdev->src) - return 0; - - if (chinfo->dst != RPMSG_ADDR_ANY && chinfo->dst != rpdev->dst) - return 0; - - if (strncmp(chinfo->name, rpdev->id.name, RPMSG_NAME_SIZE)) - return 0; - - /* found a match ! */ - return 1; -} - static const struct rpmsg_device_ops virtio_rpmsg_ops = { .create_ept = virtio_rpmsg_create_ept, .announce_create = virtio_rpmsg_announce_create, @@ -494,7 +473,7 @@ static struct rpmsg_device *rpmsg_create_channel(struct virtproc_info *vrp, int ret; /* make sure a similar channel doesn't already exist */ - tmp = device_find_child(dev, chinfo, rpmsg_device_match); + tmp = rpmsg_find_device(dev, chinfo); if (tmp) { /* decrement the matched device's refcount back */ put_device(tmp); @@ -547,7 +526,7 @@ static int rpmsg_destroy_channel(struct virtproc_info *vrp, struct virtio_device *vdev = vrp->vdev; struct device *dev; - dev = device_find_child(&vdev->dev, chinfo, rpmsg_device_match); + dev = rpmsg_find_device(&vdev->dev, chinfo); if (!dev) return -EINVAL;