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bf4afc53b7
This was done entirely with mindless brute force, using
git grep -l '\<k[vmz]*alloc_objs*(.*, GFP_KERNEL)' |
xargs sed -i 's/\(alloc_objs*(.*\), GFP_KERNEL)/\1)/'
to convert the new alloc_obj() users that had a simple GFP_KERNEL
argument to just drop that argument.
Note that due to the extreme simplicity of the scripting, any slightly
more complex cases spread over multiple lines would not be triggered:
they definitely exist, but this covers the vast bulk of the cases, and
the resulting diff is also then easier to check automatically.
For the same reason the 'flex' versions will be done as a separate
conversion.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
137 lines
3.3 KiB
C
137 lines
3.3 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (C) 2012 Intel Corporation. All rights reserved.
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*/
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#define pr_fmt(fmt) "hci: %s: " fmt, __func__
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <net/nfc/hci.h>
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#include "hci.h"
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/*
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* Payload is the HCP message data only. Instruction will be prepended.
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* Guarantees that cb will be called upon completion or timeout delay
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* counted from the moment the cmd is sent to the transport.
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*/
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int nfc_hci_hcp_message_tx(struct nfc_hci_dev *hdev, u8 pipe,
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u8 type, u8 instruction,
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const u8 *payload, size_t payload_len,
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data_exchange_cb_t cb, void *cb_context,
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unsigned long completion_delay)
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{
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struct nfc_dev *ndev = hdev->ndev;
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struct hci_msg *cmd;
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const u8 *ptr = payload;
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int hci_len, err;
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bool firstfrag = true;
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cmd = kzalloc_obj(struct hci_msg);
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if (cmd == NULL)
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return -ENOMEM;
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INIT_LIST_HEAD(&cmd->msg_l);
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skb_queue_head_init(&cmd->msg_frags);
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cmd->wait_response = (type == NFC_HCI_HCP_COMMAND) ? true : false;
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cmd->cb = cb;
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cmd->cb_context = cb_context;
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cmd->completion_delay = completion_delay;
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hci_len = payload_len + 1;
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while (hci_len > 0) {
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struct sk_buff *skb;
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int skb_len, data_link_len;
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struct hcp_packet *packet;
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if (NFC_HCI_HCP_PACKET_HEADER_LEN + hci_len <=
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hdev->max_data_link_payload)
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data_link_len = hci_len;
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else
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data_link_len = hdev->max_data_link_payload -
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NFC_HCI_HCP_PACKET_HEADER_LEN;
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skb_len = ndev->tx_headroom + NFC_HCI_HCP_PACKET_HEADER_LEN +
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data_link_len + ndev->tx_tailroom;
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hci_len -= data_link_len;
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skb = alloc_skb(skb_len, GFP_KERNEL);
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if (skb == NULL) {
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err = -ENOMEM;
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goto out_skb_err;
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}
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skb_reserve(skb, ndev->tx_headroom);
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skb_put(skb, NFC_HCI_HCP_PACKET_HEADER_LEN + data_link_len);
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/* Only the last fragment will have the cb bit set to 1 */
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packet = (struct hcp_packet *)skb->data;
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packet->header = pipe;
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if (firstfrag) {
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firstfrag = false;
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packet->message.header = HCP_HEADER(type, instruction);
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} else {
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packet->message.header = *ptr++;
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}
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if (ptr) {
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memcpy(packet->message.data, ptr, data_link_len - 1);
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ptr += data_link_len - 1;
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}
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/* This is the last fragment, set the cb bit */
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if (hci_len == 0)
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packet->header |= ~NFC_HCI_FRAGMENT;
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skb_queue_tail(&cmd->msg_frags, skb);
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}
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mutex_lock(&hdev->msg_tx_mutex);
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if (hdev->shutting_down) {
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err = -ESHUTDOWN;
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mutex_unlock(&hdev->msg_tx_mutex);
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goto out_skb_err;
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}
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list_add_tail(&cmd->msg_l, &hdev->msg_tx_queue);
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mutex_unlock(&hdev->msg_tx_mutex);
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schedule_work(&hdev->msg_tx_work);
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return 0;
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out_skb_err:
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skb_queue_purge(&cmd->msg_frags);
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kfree(cmd);
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return err;
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}
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/*
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* Receive hcp message for pipe, with type and cmd.
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* skb contains optional message data only.
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*/
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void nfc_hci_hcp_message_rx(struct nfc_hci_dev *hdev, u8 pipe, u8 type,
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u8 instruction, struct sk_buff *skb)
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{
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switch (type) {
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case NFC_HCI_HCP_RESPONSE:
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nfc_hci_resp_received(hdev, instruction, skb);
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break;
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case NFC_HCI_HCP_COMMAND:
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nfc_hci_cmd_received(hdev, pipe, instruction, skb);
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break;
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case NFC_HCI_HCP_EVENT:
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nfc_hci_event_received(hdev, pipe, instruction, skb);
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break;
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default:
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pr_err("UNKNOWN MSG Type %d, instruction=%d\n",
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type, instruction);
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kfree_skb(skb);
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break;
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}
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}
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