00976ad527
The sequencer core module doesn't call some destructors in the error path of the init code, which may leave some resources. This patch mainly fix these leaks by calling the destructors appropriately at alsa_seq_init(). Also the patch brings a few cleanups along with it, namely: - Expand the old "if ((err = xxx) < 0)" coding style - Get rid of empty seq_queue_init() and its caller - Change snd_seq_info_done() to void Last but not least, a couple of functions lose __exit annotation since they are called also in alsa_seq_init(). No functional changes but minor code cleanups. Signed-off-by: Takashi Iwai <tiwai@suse.de>
136 lines
3.9 KiB
C
136 lines
3.9 KiB
C
/*
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* ALSA sequencer main module
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* Copyright (c) 1998-1999 by Frank van de Pol <fvdpol@coil.demon.nl>
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*
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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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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/device.h>
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#include <sound/core.h>
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#include <sound/initval.h>
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#include <sound/seq_kernel.h>
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#include "seq_clientmgr.h"
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#include "seq_memory.h"
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#include "seq_queue.h"
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#include "seq_lock.h"
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#include "seq_timer.h"
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#include "seq_system.h"
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#include "seq_info.h"
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#include <sound/minors.h>
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#include <sound/seq_device.h>
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#if defined(CONFIG_SND_SEQ_DUMMY_MODULE)
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int seq_client_load[15] = {[0] = SNDRV_SEQ_CLIENT_DUMMY, [1 ... 14] = -1};
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#else
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int seq_client_load[15] = {[0 ... 14] = -1};
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#endif
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int seq_default_timer_class = SNDRV_TIMER_CLASS_GLOBAL;
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int seq_default_timer_sclass = SNDRV_TIMER_SCLASS_NONE;
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int seq_default_timer_card = -1;
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int seq_default_timer_device =
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#ifdef CONFIG_SND_SEQ_HRTIMER_DEFAULT
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SNDRV_TIMER_GLOBAL_HRTIMER
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#else
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SNDRV_TIMER_GLOBAL_SYSTEM
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#endif
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;
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int seq_default_timer_subdevice = 0;
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int seq_default_timer_resolution = 0; /* Hz */
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MODULE_AUTHOR("Frank van de Pol <fvdpol@coil.demon.nl>, Jaroslav Kysela <perex@perex.cz>");
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MODULE_DESCRIPTION("Advanced Linux Sound Architecture sequencer.");
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MODULE_LICENSE("GPL");
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module_param_array(seq_client_load, int, NULL, 0444);
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MODULE_PARM_DESC(seq_client_load, "The numbers of global (system) clients to load through kmod.");
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module_param(seq_default_timer_class, int, 0644);
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MODULE_PARM_DESC(seq_default_timer_class, "The default timer class.");
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module_param(seq_default_timer_sclass, int, 0644);
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MODULE_PARM_DESC(seq_default_timer_sclass, "The default timer slave class.");
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module_param(seq_default_timer_card, int, 0644);
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MODULE_PARM_DESC(seq_default_timer_card, "The default timer card number.");
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module_param(seq_default_timer_device, int, 0644);
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MODULE_PARM_DESC(seq_default_timer_device, "The default timer device number.");
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module_param(seq_default_timer_subdevice, int, 0644);
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MODULE_PARM_DESC(seq_default_timer_subdevice, "The default timer subdevice number.");
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module_param(seq_default_timer_resolution, int, 0644);
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MODULE_PARM_DESC(seq_default_timer_resolution, "The default timer resolution in Hz.");
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MODULE_ALIAS_CHARDEV(CONFIG_SND_MAJOR, SNDRV_MINOR_SEQUENCER);
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MODULE_ALIAS("devname:snd/seq");
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/*
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* INIT PART
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*/
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static int __init alsa_seq_init(void)
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{
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int err;
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err = client_init_data();
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if (err < 0)
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goto error;
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/* register sequencer device */
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err = snd_sequencer_device_init();
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if (err < 0)
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goto error;
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/* register proc interface */
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err = snd_seq_info_init();
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if (err < 0)
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goto error_device;
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/* register our internal client */
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err = snd_seq_system_client_init();
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if (err < 0)
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goto error_info;
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snd_seq_autoload_init();
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return 0;
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error_info:
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snd_seq_info_done();
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error_device:
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snd_sequencer_device_done();
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error:
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return err;
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}
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static void __exit alsa_seq_exit(void)
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{
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/* unregister our internal client */
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snd_seq_system_client_done();
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/* unregister proc interface */
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snd_seq_info_done();
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/* delete timing queues */
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snd_seq_queues_delete();
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/* unregister sequencer device */
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snd_sequencer_device_done();
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snd_seq_autoload_exit();
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}
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module_init(alsa_seq_init)
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module_exit(alsa_seq_exit)
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