cregit-Linux how code gets into the kernel

Release 4.11 net/qrtr/smd.c

Directory: net/qrtr
/*
 * Copyright (c) 2015, Sony Mobile Communications Inc.
 * Copyright (c) 2013, The Linux Foundation. All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 and
 * only version 2 as published by the Free Software Foundation.
 *
 * 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.
 */

#include <linux/module.h>
#include <linux/skbuff.h>
#include <linux/soc/qcom/smd.h>

#include "qrtr.h"


struct qrtr_smd_dev {
	
struct qrtr_endpoint ep;
	
struct qcom_smd_channel *channel;
	
struct device *dev;
};

/* from smd to qrtr */

static int qcom_smd_qrtr_callback(struct qcom_smd_channel *channel, const void *data, size_t len) { struct qrtr_smd_dev *qdev = qcom_smd_get_drvdata(channel); int rc; if (!qdev) return -EAGAIN; rc = qrtr_endpoint_post(&qdev->ep, data, len); if (rc == -EINVAL) { dev_err(qdev->dev, "invalid ipcrouter packet\n"); /* return 0 to let smd drop the packet */ rc = 0; } return rc; }

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Courtney Cavin7693.83%150.00%
Björn Andersson56.17%150.00%
Total81100.00%2100.00%

/* from qrtr to smd */
static int qcom_smd_qrtr_send(struct qrtr_endpoint *ep, struct sk_buff *skb) { struct qrtr_smd_dev *qdev = container_of(ep, struct qrtr_smd_dev, ep); int rc; rc = skb_linearize(skb); if (rc) goto out; rc = qcom_smd_send(qdev->channel, skb->data, skb->len); out: if (rc) kfree_skb(skb); else consume_skb(skb); return rc; }

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Courtney Cavin85100.00%1100.00%
Total85100.00%1100.00%


static int qcom_smd_qrtr_probe(struct qcom_smd_device *sdev) { struct qrtr_smd_dev *qdev; int rc; qdev = devm_kzalloc(&sdev->dev, sizeof(*qdev), GFP_KERNEL); if (!qdev) return -ENOMEM; qdev->channel = sdev->channel; qdev->dev = &sdev->dev; qdev->ep.xmit = qcom_smd_qrtr_send; rc = qrtr_endpoint_register(&qdev->ep, QRTR_EP_NID_AUTO); if (rc) return rc; qcom_smd_set_drvdata(sdev->channel, qdev); dev_set_drvdata(&sdev->dev, qdev); dev_dbg(&sdev->dev, "Qualcomm SMD QRTR driver probed\n"); return 0; }

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Courtney Cavin10485.25%150.00%
Björn Andersson1814.75%150.00%
Total122100.00%2100.00%


static void qcom_smd_qrtr_remove(struct qcom_smd_device *sdev) { struct qrtr_smd_dev *qdev = dev_get_drvdata(&sdev->dev); qrtr_endpoint_unregister(&qdev->ep); dev_set_drvdata(&sdev->dev, NULL); }

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Courtney Cavin42100.00%1100.00%
Total42100.00%1100.00%

static const struct qcom_smd_id qcom_smd_qrtr_smd_match[] = { { "IPCRTR" }, {} }; static struct qcom_smd_driver qcom_smd_qrtr_driver = { .probe = qcom_smd_qrtr_probe, .remove = qcom_smd_qrtr_remove, .callback = qcom_smd_qrtr_callback, .smd_match_table = qcom_smd_qrtr_smd_match, .driver = { .name = "qcom_smd_qrtr", .owner = THIS_MODULE, }, }; module_qcom_smd_driver(qcom_smd_qrtr_driver); MODULE_DESCRIPTION("Qualcomm IPC-Router SMD interface driver"); MODULE_LICENSE("GPL v2");

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PersonTokensPropCommitsCommitProp
Courtney Cavin40893.58%150.00%
Björn Andersson286.42%150.00%
Total436100.00%2100.00%
Directory: net/qrtr
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