diff options
author | Takashi Iwai <tiwai@suse.de> | 2011-03-09 19:33:48 +0300 |
---|---|---|
committer | Takashi Iwai <tiwai@suse.de> | 2011-03-09 22:10:37 +0300 |
commit | 848669da3a92fa6ab815e0517af3294afb3ea928 (patch) | |
tree | ac00a24c870f08e069397c94d506ae263c0bd1c1 | |
parent | a2800300f28bd1814f3ba8cfd93ecb0b00c2dfe3 (diff) | |
download | linux-848669da3a92fa6ab815e0517af3294afb3ea928.tar.xz |
sound: Use sound_register_*() for additional OSS minor devices
Since OSS driver creates the device entries for /dev/audio* and
/dev/dspW* by itself without coping with sound_core, it leads to
conflicts with others and let sysfs spewing warnings.
This patch rewrites the registration part of OSS driver to use
the standard method also for additional minor devices.
Reported-by: Steven Rostedt <rostedt@goodmis.org> (with ktest.pl)
Tested-by: Steven Rostedt <rostedt@goodmis.org> (with ktest.pl)
Signed-off-by: Takashi Iwai <tiwai@suse.de>
-rw-r--r-- | sound/oss/soundcard.c | 56 | ||||
-rw-r--r-- | sound/sound_core.c | 3 |
2 files changed, 23 insertions, 36 deletions
diff --git a/sound/oss/soundcard.c b/sound/oss/soundcard.c index fcb14a099822..7c7793a0eb25 100644 --- a/sound/oss/soundcard.c +++ b/sound/oss/soundcard.c @@ -526,31 +526,21 @@ bad: } -/* These device names follow the official Linux device list, - * Documentation/devices.txt. Let us know if there are other - * common names we should support for compatibility. - * Only those devices not created by the generic code in sound_core.c are - * registered here. - */ -static const struct { - unsigned short minor; - char *name; - umode_t mode; - int *num; -} dev_list[] = { /* list of minor devices */ -/* seems to be some confusion here -- this device is not in the device list */ - {SND_DEV_DSP16, "dspW", S_IWUGO | S_IRUSR | S_IRGRP, - &num_audiodevs}, - {SND_DEV_AUDIO, "audio", S_IWUGO | S_IRUSR | S_IRGRP, - &num_audiodevs}, -}; - static int dmabuf; static int dmabug; module_param(dmabuf, int, 0444); module_param(dmabug, int, 0444); +/* additional minors for compatibility */ +struct oss_minor_dev { + unsigned short minor; + unsigned int enabled; +} dev_list[] = { + { SND_DEV_DSP16 }, + { SND_DEV_AUDIO }, +}; + static int __init oss_init(void) { int err; @@ -571,18 +561,12 @@ static int __init oss_init(void) sound_dmap_flag = (dmabuf > 0 ? 1 : 0); for (i = 0; i < ARRAY_SIZE(dev_list); i++) { - device_create(sound_class, NULL, - MKDEV(SOUND_MAJOR, dev_list[i].minor), NULL, - "%s", dev_list[i].name); - - if (!dev_list[i].num) - continue; - - for (j = 1; j < *dev_list[i].num; j++) - device_create(sound_class, NULL, - MKDEV(SOUND_MAJOR, - dev_list[i].minor + (j*0x10)), - NULL, "%s%d", dev_list[i].name, j); + j = 0; + do { + unsigned short minor = dev_list[i].minor + j * 0x10; + if (!register_sound_special(&oss_sound_fops, minor)) + dev_list[i].enabled = (1 << j); + } while (++j < num_audiodevs); } if (sound_nblocks >= MAX_MEM_BLOCKS - 1) @@ -596,11 +580,11 @@ static void __exit oss_cleanup(void) int i, j; for (i = 0; i < ARRAY_SIZE(dev_list); i++) { - device_destroy(sound_class, MKDEV(SOUND_MAJOR, dev_list[i].minor)); - if (!dev_list[i].num) - continue; - for (j = 1; j < *dev_list[i].num; j++) - device_destroy(sound_class, MKDEV(SOUND_MAJOR, dev_list[i].minor + (j*0x10))); + j = 0; + do { + if (dev_list[i].enabled & (1 << j)) + unregister_sound_special(dev_list[i].minor); + } while (++j < num_audiodevs); } unregister_sound_special(1); diff --git a/sound/sound_core.c b/sound/sound_core.c index 5580aced8730..6ce277860fd7 100644 --- a/sound/sound_core.c +++ b/sound/sound_core.c @@ -384,6 +384,9 @@ int register_sound_special_device(const struct file_operations *fops, int unit, case 4: name = "audio"; break; + case 5: + name = "dspW"; + break; case 8: name = "sequencer2"; if (unit >= SOUND_STEP) |