From 5c43b603a2e3f77f41e0cf339e72bee2077bfe61 Mon Sep 17 00:00:00 2001 From: Amey Narkhede Date: Wed, 23 Sep 2020 19:13:27 +0530 Subject: hw/usb: Use lock guard macros MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Use qemu LOCK_GUARD macros from "qemu/lockable.h" in hw/usb/ccid-card-emulated.c, saves manual unlock calls. Signed-off-by: Amey Narkhede Reviewed-by: Philippe Mathieu-Daudé Message-id: 20200923134327.576139-1-ameynarkhede03@gmail.com Signed-off-by: Gerd Hoffmann --- hw/usb/ccid-card-emulated.c | 54 ++++++++++++++++++++++----------------------- 1 file changed, 27 insertions(+), 27 deletions(-) (limited to 'hw') diff --git a/hw/usb/ccid-card-emulated.c b/hw/usb/ccid-card-emulated.c index 5e4649d..2d566f7 100644 --- a/hw/usb/ccid-card-emulated.c +++ b/hw/usb/ccid-card-emulated.c @@ -30,6 +30,7 @@ #include #include "qemu/thread.h" +#include "qemu/lockable.h" #include "qemu/main-loop.h" #include "qemu/module.h" #include "ccid.h" @@ -244,34 +245,34 @@ static void *handle_apdu_thread(void* arg) card->quit_apdu_thread = 0; /* debugging */ break; } - qemu_mutex_lock(&card->vreader_mutex); - while (!QSIMPLEQ_EMPTY(&card->guest_apdu_list)) { - event = QSIMPLEQ_FIRST(&card->guest_apdu_list); - assert((unsigned long)event > 1000); - QSIMPLEQ_REMOVE_HEAD(&card->guest_apdu_list, entry); - if (event->p.data.type != EMUL_GUEST_APDU) { - DPRINTF(card, 1, "unexpected message in handle_apdu_thread\n"); - g_free(event); - continue; - } - if (card->reader == NULL) { - DPRINTF(card, 1, "reader is NULL\n"); + WITH_QEMU_LOCK_GUARD(&card->vreader_mutex) { + while (!QSIMPLEQ_EMPTY(&card->guest_apdu_list)) { + event = QSIMPLEQ_FIRST(&card->guest_apdu_list); + assert((unsigned long)event > 1000); + QSIMPLEQ_REMOVE_HEAD(&card->guest_apdu_list, entry); + if (event->p.data.type != EMUL_GUEST_APDU) { + DPRINTF(card, 1, "unexpected message in handle_apdu_thread\n"); + g_free(event); + continue; + } + if (card->reader == NULL) { + DPRINTF(card, 1, "reader is NULL\n"); + g_free(event); + continue; + } + recv_len = sizeof(recv_data); + reader_status = vreader_xfr_bytes(card->reader, + event->p.data.data, event->p.data.len, + recv_data, &recv_len); + DPRINTF(card, 2, "got back apdu of length %d\n", recv_len); + if (reader_status == VREADER_OK) { + emulated_push_response_apdu(card, recv_data, recv_len); + } else { + emulated_push_error(card, reader_status); + } g_free(event); - continue; } - recv_len = sizeof(recv_data); - reader_status = vreader_xfr_bytes(card->reader, - event->p.data.data, event->p.data.len, - recv_data, &recv_len); - DPRINTF(card, 2, "got back apdu of length %d\n", recv_len); - if (reader_status == VREADER_OK) { - emulated_push_response_apdu(card, recv_data, recv_len); - } else { - emulated_push_error(card, reader_status); - } - g_free(event); } - qemu_mutex_unlock(&card->vreader_mutex); } return NULL; } @@ -365,7 +366,7 @@ static void card_event_handler(EventNotifier *notifier) EmulEvent *event, *next; event_notifier_test_and_clear(&card->notifier); - qemu_mutex_lock(&card->event_list_mutex); + QEMU_LOCK_GUARD(&card->event_list_mutex); QSIMPLEQ_FOREACH_SAFE(event, &card->event_list, entry, next) { DPRINTF(card, 2, "event %s\n", emul_event_to_string(event->p.gen.type)); switch (event->p.gen.type) { @@ -398,7 +399,6 @@ static void card_event_handler(EventNotifier *notifier) g_free(event); } QSIMPLEQ_INIT(&card->event_list); - qemu_mutex_unlock(&card->event_list_mutex); } static int init_event_notifier(EmulatedState *card, Error **errp) -- cgit v1.1