mirror of
https://gitea.osmocom.org/sim-card/simtrace2.git
synced 2026-08-16 00:56:50 +03:00
Eric Wild
f7170aff42
cardem: - dispatch_usb_command_cardem() appends to uart_tx_queue from the main loop - tx_byte_tpdu() dequeues from the USART IRQ handler @ NVIC prio 0 card_handle_reset() has the same issue, drains queue and frees uart_tx_msg from main loop while the ISR may own them. All of this needs protection against the irq. Needs a fixed llist_add_tail_irqsafe(), which called __enable_irq() instead of restoring the saved PRIMASK for some unknown reason?!?!?!? Change-Id: I7d9cdcc56263b27dfd4649dfb1da1d67761ee923
56 lines
1.3 KiB
C
56 lines
1.3 KiB
C
/* IRQ-safe linked lists
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*
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* (C) 2015-2017 by Harald Welte <laforge@gnumonks.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#pragma once
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#include <osmocom/core/linuxlist.h>
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#include "utils.h"
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static inline void llist_add_irqsafe(struct llist_head *_new,
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struct llist_head *head)
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{
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unsigned long x;
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local_irq_save(x);
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llist_add(_new, head);
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local_irq_restore(x);
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}
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static inline void llist_add_tail_irqsafe(struct llist_head *_new,
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struct llist_head *head)
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{
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unsigned long x;
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local_irq_save(x);
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llist_add_tail(_new, head);
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local_irq_restore(x);
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}
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static inline struct llist_head *llist_head_dequeue_irqsafe(struct llist_head *head)
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{
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struct llist_head *lh;
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unsigned long x;
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local_irq_save(x);
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if (llist_empty(head)) {
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lh = NULL;
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} else {
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lh = head->next;
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llist_del(lh);
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}
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local_irq_restore(x);
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return lh;
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}
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