From bd76af0f87f7a1815b311bde269a3f18305b3169 Mon Sep 17 00:00:00 2001 From: Jaroslav Kysela Date: Wed, 18 Aug 2010 14:16:54 +0200 Subject: ALSA: pcm midlevel code - add time check for double interrupt acknowledge The current code in pcm_lib.c do all checks using only the position in the ring buffer. Unfortunately, where the interrupts gets delayed or merged into one, we need another timing source to check when the buffer size boundary overlaps to avoid the wrong updating of the ring buffer pointers. This code uses jiffies to check the right time window without any performance impact. Signed-off-by: Jaroslav Kysela Signed-off-by: Takashi Iwai --- sound/core/pcm_lib.c | 14 +++++++++----- sound/core/pcm_native.c | 2 ++ 2 files changed, 11 insertions(+), 5 deletions(-) (limited to 'sound/core') diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c index e23e0e7ab26f..a1707cca9c66 100644 --- a/sound/core/pcm_lib.c +++ b/sound/core/pcm_lib.c @@ -334,11 +334,15 @@ static int snd_pcm_update_hw_ptr0(struct snd_pcm_substream *substream, /* delta = "expected next hw_ptr" for in_interrupt != 0 */ delta = runtime->hw_ptr_interrupt + runtime->period_size; if (delta > new_hw_ptr) { - hw_base += runtime->buffer_size; - if (hw_base >= runtime->boundary) - hw_base = 0; - new_hw_ptr = hw_base + pos; - goto __delta; + /* check for double acknowledged interrupts */ + hdelta = jiffies - runtime->hw_ptr_jiffies; + if (hdelta > runtime->hw_ptr_buffer_jiffies/2) { + hw_base += runtime->buffer_size; + if (hw_base >= runtime->boundary) + hw_base = 0; + new_hw_ptr = hw_base + pos; + goto __delta; + } } } /* new_hw_ptr might be lower than old_hw_ptr in case when */ diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c index 134fc6c2e08d..e2e73895db12 100644 --- a/sound/core/pcm_native.c +++ b/sound/core/pcm_native.c @@ -864,6 +864,8 @@ static void snd_pcm_post_start(struct snd_pcm_substream *substream, int state) struct snd_pcm_runtime *runtime = substream->runtime; snd_pcm_trigger_tstamp(substream); runtime->hw_ptr_jiffies = jiffies; + runtime->hw_ptr_buffer_jiffies = (runtime->buffer_size * HZ) / + runtime->rate; runtime->status->state = state; if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && runtime->silence_size > 0) -- cgit v1.2.2 From d7d28bc29f4ea7c2d23ed002a9973c64a92bcdb8 Mon Sep 17 00:00:00 2001 From: Jaroslav Kysela Date: Wed, 18 Aug 2010 14:16:54 +0200 Subject: ALSA: pcm midlevel code - add time check for double interrupt acknowledge The current code in pcm_lib.c do all checks using only the position in the ring buffer. Unfortunately, where the interrupts gets delayed or merged into one, we need another timing source to check when the buffer size boundary overlaps to avoid the wrong updating of the ring buffer pointers. This code uses jiffies to check the right time window without any performance impact. Signed-off-by: Jaroslav Kysela --- sound/core/pcm_lib.c | 14 +++++++++----- sound/core/pcm_native.c | 2 ++ 2 files changed, 11 insertions(+), 5 deletions(-) (limited to 'sound/core') diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c index e9d98be190c5..d6ecca27bb68 100644 --- a/sound/core/pcm_lib.c +++ b/sound/core/pcm_lib.c @@ -329,11 +329,15 @@ static int snd_pcm_update_hw_ptr0(struct snd_pcm_substream *substream, /* delta = "expected next hw_ptr" for in_interrupt != 0 */ delta = runtime->hw_ptr_interrupt + runtime->period_size; if (delta > new_hw_ptr) { - hw_base += runtime->buffer_size; - if (hw_base >= runtime->boundary) - hw_base = 0; - new_hw_ptr = hw_base + pos; - goto __delta; + /* check for double acknowledged interrupts */ + hdelta = jiffies - runtime->hw_ptr_jiffies; + if (hdelta > runtime->hw_ptr_buffer_jiffies/2) { + hw_base += runtime->buffer_size; + if (hw_base >= runtime->boundary) + hw_base = 0; + new_hw_ptr = hw_base + pos; + goto __delta; + } } } /* new_hw_ptr might be lower than old_hw_ptr in case when */ diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c index 303ac04ff6e4..2d2e1b65ee9a 100644 --- a/sound/core/pcm_native.c +++ b/sound/core/pcm_native.c @@ -867,6 +867,8 @@ static void snd_pcm_post_start(struct snd_pcm_substream *substream, int state) struct snd_pcm_runtime *runtime = substream->runtime; snd_pcm_trigger_tstamp(substream); runtime->hw_ptr_jiffies = jiffies; + runtime->hw_ptr_buffer_jiffies = (runtime->buffer_size * HZ) / + runtime->rate; runtime->status->state = state; if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && runtime->silence_size > 0) -- cgit v1.2.2 From 9fe856e47e1751204faf3d604c6d20ab24bd3b93 Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Sat, 4 Sep 2010 18:52:54 -0700 Subject: sound: Remove unnecessary casts of private_data Signed-off-by: Joe Perches Signed-off-by: Takashi Iwai --- sound/core/oss/mixer_oss.c | 22 +++++++++++----------- sound/core/pcm.c | 3 +-- 2 files changed, 12 insertions(+), 13 deletions(-) (limited to 'sound/core') diff --git a/sound/core/oss/mixer_oss.c b/sound/core/oss/mixer_oss.c index f50ebf20df96..86afb13cd240 100644 --- a/sound/core/oss/mixer_oss.c +++ b/sound/core/oss/mixer_oss.c @@ -77,7 +77,7 @@ static int snd_mixer_oss_release(struct inode *inode, struct file *file) struct snd_mixer_oss_file *fmixer; if (file->private_data) { - fmixer = (struct snd_mixer_oss_file *) file->private_data; + fmixer = file->private_data; module_put(fmixer->card->module); snd_card_file_remove(fmixer->card, file); kfree(fmixer); @@ -368,7 +368,7 @@ static int snd_mixer_oss_ioctl1(struct snd_mixer_oss_file *fmixer, unsigned int static long snd_mixer_oss_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { - return snd_mixer_oss_ioctl1((struct snd_mixer_oss_file *) file->private_data, cmd, arg); + return snd_mixer_oss_ioctl1(file->private_data, cmd, arg); } int snd_mixer_oss_ioctl_card(struct snd_card *card, unsigned int cmd, unsigned long arg) @@ -582,7 +582,7 @@ static int snd_mixer_oss_get_volume1(struct snd_mixer_oss_file *fmixer, struct snd_mixer_oss_slot *pslot, int *left, int *right) { - struct slot *slot = (struct slot *)pslot->private_data; + struct slot *slot = pslot->private_data; *left = *right = 100; if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) { @@ -691,7 +691,7 @@ static int snd_mixer_oss_put_volume1(struct snd_mixer_oss_file *fmixer, struct snd_mixer_oss_slot *pslot, int left, int right) { - struct slot *slot = (struct slot *)pslot->private_data; + struct slot *slot = pslot->private_data; if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) { snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right); @@ -740,7 +740,7 @@ static int snd_mixer_oss_get_recsrc1_sw(struct snd_mixer_oss_file *fmixer, struct snd_mixer_oss_slot *pslot, int *active) { - struct slot *slot = (struct slot *)pslot->private_data; + struct slot *slot = pslot->private_data; int left, right; left = right = 1; @@ -753,7 +753,7 @@ static int snd_mixer_oss_get_recsrc1_route(struct snd_mixer_oss_file *fmixer, struct snd_mixer_oss_slot *pslot, int *active) { - struct slot *slot = (struct slot *)pslot->private_data; + struct slot *slot = pslot->private_data; int left, right; left = right = 1; @@ -766,7 +766,7 @@ static int snd_mixer_oss_put_recsrc1_sw(struct snd_mixer_oss_file *fmixer, struct snd_mixer_oss_slot *pslot, int active) { - struct slot *slot = (struct slot *)pslot->private_data; + struct slot *slot = pslot->private_data; snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], active, active, 0); return 0; @@ -776,7 +776,7 @@ static int snd_mixer_oss_put_recsrc1_route(struct snd_mixer_oss_file *fmixer, struct snd_mixer_oss_slot *pslot, int active) { - struct slot *slot = (struct slot *)pslot->private_data; + struct slot *slot = pslot->private_data; snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], active, active, 1); return 0; @@ -813,7 +813,7 @@ static int snd_mixer_oss_get_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned if (!(mixer->mask_recsrc & (1 << idx))) continue; pslot = &mixer->slots[idx]; - slot = (struct slot *)pslot->private_data; + slot = pslot->private_data; if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE) continue; if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE)) @@ -861,7 +861,7 @@ static int snd_mixer_oss_put_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned if (!(mixer->mask_recsrc & (1 << idx))) continue; pslot = &mixer->slots[idx]; - slot = (struct slot *)pslot->private_data; + slot = pslot->private_data; if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE) continue; if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE)) @@ -925,7 +925,7 @@ static int snd_mixer_oss_build_test(struct snd_mixer_oss *mixer, struct slot *sl static void snd_mixer_oss_slot_free(struct snd_mixer_oss_slot *chn) { - struct slot *p = (struct slot *)chn->private_data; + struct slot *p = chn->private_data; if (p) { if (p->allocated && p->assigned) { kfree(p->assigned->name); diff --git a/sound/core/pcm.c b/sound/core/pcm.c index 204af48c5cc1..88525a958291 100644 --- a/sound/core/pcm.c +++ b/sound/core/pcm.c @@ -364,8 +364,7 @@ static void snd_pcm_stream_proc_info_read(struct snd_info_entry *entry, static void snd_pcm_substream_proc_info_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer) { - snd_pcm_proc_info_read((struct snd_pcm_substream *)entry->private_data, - buffer); + snd_pcm_proc_info_read(entry->private_data, buffer); } static void snd_pcm_substream_proc_hw_params_read(struct snd_info_entry *entry, -- cgit v1.2.2 From 47023ec774b6f73bb11d9f3b00b21f2bbd87e0f2 Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Mon, 13 Sep 2010 21:24:02 -0700 Subject: sound: Use static const char * const where possible Signed-off-by: Joe Perches Signed-off-by: Takashi Iwai --- sound/core/pcm_native.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'sound/core') diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c index e2e73895db12..eb4094270a4f 100644 --- a/sound/core/pcm_native.c +++ b/sound/core/pcm_native.c @@ -142,7 +142,7 @@ int snd_pcm_info_user(struct snd_pcm_substream *substream, #ifdef RULES_DEBUG #define HW_PARAM(v) [SNDRV_PCM_HW_PARAM_##v] = #v -char *snd_pcm_hw_param_names[] = { +static const char * const snd_pcm_hw_param_names[] = { HW_PARAM(ACCESS), HW_PARAM(FORMAT), HW_PARAM(SUBFORMAT), -- cgit v1.2.2 From 4437ecdc7190302ed02fb1467c116aff29c325b2 Mon Sep 17 00:00:00 2001 From: Peter Ujfalusi Date: Thu, 16 Sep 2010 10:26:54 +0300 Subject: ALSA: core: Allow card id change to the same string When user want to change the card id to the same string on the card via /sys/class/sound/cardX/id, do not report error. Instead return with success without doing anything. Signed-off-by: Peter Ujfalusi Signed-off-by: Takashi Iwai --- sound/core/init.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) (limited to 'sound/core') diff --git a/sound/core/init.c b/sound/core/init.c index ec4a50ce5656..2de45fbd70fb 100644 --- a/sound/core/init.c +++ b/sound/core/init.c @@ -607,11 +607,16 @@ card_id_store_attr(struct device *dev, struct device_attribute *attr, return -EEXIST; } for (idx = 0; idx < snd_ecards_limit; idx++) { - if (snd_cards[idx] && !strcmp(snd_cards[idx]->id, buf1)) - goto __exist; + if (snd_cards[idx] && !strcmp(snd_cards[idx]->id, buf1)) { + if (card == snd_cards[idx]) + goto __ok; + else + goto __exist; + } } strcpy(card->id, buf1); snd_info_card_id_change(card); +__ok: mutex_unlock(&snd_card_mutex); return count; -- cgit v1.2.2 From 838c364ff05c143fd1810e8ad1469935d6c23a7a Mon Sep 17 00:00:00 2001 From: Jaroslav Kysela Date: Fri, 8 Oct 2010 10:48:50 +0200 Subject: ALSA: OSS mixer emulation - fix locking Fix mutex release and cleanup some locking code. Cc: Signed-off-by: Jaroslav Kysela --- sound/core/oss/mixer_oss.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) (limited to 'sound/core') diff --git a/sound/core/oss/mixer_oss.c b/sound/core/oss/mixer_oss.c index f50ebf20df96..8442a088677d 100644 --- a/sound/core/oss/mixer_oss.c +++ b/sound/core/oss/mixer_oss.c @@ -618,8 +618,10 @@ static void snd_mixer_oss_put_volume1_vol(struct snd_mixer_oss_file *fmixer, if (numid == ID_UNKNOWN) return; down_read(&card->controls_rwsem); - if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) + if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) { + up_read(&card->controls_rwsem); return; + } uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL); uctl = kzalloc(sizeof(*uctl), GFP_KERNEL); if (uinfo == NULL || uctl == NULL) @@ -658,7 +660,7 @@ static void snd_mixer_oss_put_volume1_sw(struct snd_mixer_oss_file *fmixer, return; down_read(&card->controls_rwsem); if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) { - up_read(&fmixer->card->controls_rwsem); + up_read(&card->controls_rwsem); return; } uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL); @@ -797,7 +799,7 @@ static int snd_mixer_oss_get_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned uctl = kzalloc(sizeof(*uctl), GFP_KERNEL); if (uinfo == NULL || uctl == NULL) { err = -ENOMEM; - goto __unlock; + goto __free_only; } down_read(&card->controls_rwsem); kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0); @@ -826,6 +828,7 @@ static int snd_mixer_oss_get_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned err = 0; __unlock: up_read(&card->controls_rwsem); + __free_only: kfree(uctl); kfree(uinfo); return err; @@ -847,7 +850,7 @@ static int snd_mixer_oss_put_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned uctl = kzalloc(sizeof(*uctl), GFP_KERNEL); if (uinfo == NULL || uctl == NULL) { err = -ENOMEM; - goto __unlock; + goto __free_only; } down_read(&card->controls_rwsem); kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0); @@ -880,6 +883,7 @@ static int snd_mixer_oss_put_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned err = 0; __unlock: up_read(&card->controls_rwsem); + __free_only: kfree(uctl); kfree(uinfo); return err; -- cgit v1.2.2 From 6038f373a3dc1f1c26496e60b6c40b164716f07e Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Sun, 15 Aug 2010 18:52:59 +0200 Subject: llseek: automatically add .llseek fop All file_operations should get a .llseek operation so we can make nonseekable_open the default for future file operations without a .llseek pointer. The three cases that we can automatically detect are no_llseek, seq_lseek and default_llseek. For cases where we can we can automatically prove that the file offset is always ignored, we use noop_llseek, which maintains the current behavior of not returning an error from a seek. New drivers should normally not use noop_llseek but instead use no_llseek and call nonseekable_open at open time. Existing drivers can be converted to do the same when the maintainer knows for certain that no user code relies on calling seek on the device file. The generated code is often incorrectly indented and right now contains comments that clarify for each added line why a specific variant was chosen. In the version that gets submitted upstream, the comments will be gone and I will manually fix the indentation, because there does not seem to be a way to do that using coccinelle. Some amount of new code is currently sitting in linux-next that should get the same modifications, which I will do at the end of the merge window. Many thanks to Julia Lawall for helping me learn to write a semantic patch that does all this. ===== begin semantic patch ===== // This adds an llseek= method to all file operations, // as a preparation for making no_llseek the default. // // The rules are // - use no_llseek explicitly if we do nonseekable_open // - use seq_lseek for sequential files // - use default_llseek if we know we access f_pos // - use noop_llseek if we know we don't access f_pos, // but we still want to allow users to call lseek // @ open1 exists @ identifier nested_open; @@ nested_open(...) { <+... nonseekable_open(...) ...+> } @ open exists@ identifier open_f; identifier i, f; identifier open1.nested_open; @@ int open_f(struct inode *i, struct file *f) { <+... ( nonseekable_open(...) | nested_open(...) ) ...+> } @ read disable optional_qualifier exists @ identifier read_f; identifier f, p, s, off; type ssize_t, size_t, loff_t; expression E; identifier func; @@ ssize_t read_f(struct file *f, char *p, size_t s, loff_t *off) { <+... ( *off = E | *off += E | func(..., off, ...) | E = *off ) ...+> } @ read_no_fpos disable optional_qualifier exists @ identifier read_f; identifier f, p, s, off; type ssize_t, size_t, loff_t; @@ ssize_t read_f(struct file *f, char *p, size_t s, loff_t *off) { ... when != off } @ write @ identifier write_f; identifier f, p, s, off; type ssize_t, size_t, loff_t; expression E; identifier func; @@ ssize_t write_f(struct file *f, const char *p, size_t s, loff_t *off) { <+... ( *off = E | *off += E | func(..., off, ...) | E = *off ) ...+> } @ write_no_fpos @ identifier write_f; identifier f, p, s, off; type ssize_t, size_t, loff_t; @@ ssize_t write_f(struct file *f, const char *p, size_t s, loff_t *off) { ... when != off } @ fops0 @ identifier fops; @@ struct file_operations fops = { ... }; @ has_llseek depends on fops0 @ identifier fops0.fops; identifier llseek_f; @@ struct file_operations fops = { ... .llseek = llseek_f, ... }; @ has_read depends on fops0 @ identifier fops0.fops; identifier read_f; @@ struct file_operations fops = { ... .read = read_f, ... }; @ has_write depends on fops0 @ identifier fops0.fops; identifier write_f; @@ struct file_operations fops = { ... .write = write_f, ... }; @ has_open depends on fops0 @ identifier fops0.fops; identifier open_f; @@ struct file_operations fops = { ... .open = open_f, ... }; // use no_llseek if we call nonseekable_open //////////////////////////////////////////// @ nonseekable1 depends on !has_llseek && has_open @ identifier fops0.fops; identifier nso ~= "nonseekable_open"; @@ struct file_operations fops = { ... .open = nso, ... +.llseek = no_llseek, /* nonseekable */ }; @ nonseekable2 depends on !has_llseek @ identifier fops0.fops; identifier open.open_f; @@ struct file_operations fops = { ... .open = open_f, ... +.llseek = no_llseek, /* open uses nonseekable */ }; // use seq_lseek for sequential files ///////////////////////////////////// @ seq depends on !has_llseek @ identifier fops0.fops; identifier sr ~= "seq_read"; @@ struct file_operations fops = { ... .read = sr, ... +.llseek = seq_lseek, /* we have seq_read */ }; // use default_llseek if there is a readdir /////////////////////////////////////////// @ fops1 depends on !has_llseek && !nonseekable1 && !nonseekable2 && !seq @ identifier fops0.fops; identifier readdir_e; @@ // any other fop is used that changes pos struct file_operations fops = { ... .readdir = readdir_e, ... +.llseek = default_llseek, /* readdir is present */ }; // use default_llseek if at least one of read/write touches f_pos ///////////////////////////////////////////////////////////////// @ fops2 depends on !fops1 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @ identifier fops0.fops; identifier read.read_f; @@ // read fops use offset struct file_operations fops = { ... .read = read_f, ... +.llseek = default_llseek, /* read accesses f_pos */ }; @ fops3 depends on !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @ identifier fops0.fops; identifier write.write_f; @@ // write fops use offset struct file_operations fops = { ... .write = write_f, ... + .llseek = default_llseek, /* write accesses f_pos */ }; // Use noop_llseek if neither read nor write accesses f_pos /////////////////////////////////////////////////////////// @ fops4 depends on !fops1 && !fops2 && !fops3 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @ identifier fops0.fops; identifier read_no_fpos.read_f; identifier write_no_fpos.write_f; @@ // write fops use offset struct file_operations fops = { ... .write = write_f, .read = read_f, ... +.llseek = noop_llseek, /* read and write both use no f_pos */ }; @ depends on has_write && !has_read && !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @ identifier fops0.fops; identifier write_no_fpos.write_f; @@ struct file_operations fops = { ... .write = write_f, ... +.llseek = noop_llseek, /* write uses no f_pos */ }; @ depends on has_read && !has_write && !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @ identifier fops0.fops; identifier read_no_fpos.read_f; @@ struct file_operations fops = { ... .read = read_f, ... +.llseek = noop_llseek, /* read uses no f_pos */ }; @ depends on !has_read && !has_write && !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @ identifier fops0.fops; @@ struct file_operations fops = { ... +.llseek = noop_llseek, /* no read or write fn */ }; ===== End semantic patch ===== Signed-off-by: Arnd Bergmann Cc: Julia Lawall Cc: Christoph Hellwig --- sound/core/seq/oss/seq_oss.c | 1 + sound/core/sound.c | 3 ++- 2 files changed, 3 insertions(+), 1 deletion(-) (limited to 'sound/core') diff --git a/sound/core/seq/oss/seq_oss.c b/sound/core/seq/oss/seq_oss.c index f25e3cc7ddfa..a1f1a2f00ccb 100644 --- a/sound/core/seq/oss/seq_oss.c +++ b/sound/core/seq/oss/seq_oss.c @@ -220,6 +220,7 @@ static const struct file_operations seq_oss_f_ops = .poll = odev_poll, .unlocked_ioctl = odev_ioctl, .compat_ioctl = odev_ioctl_compat, + .llseek = noop_llseek, }; static int __init diff --git a/sound/core/sound.c b/sound/core/sound.c index ac42af42b787..62a093efb453 100644 --- a/sound/core/sound.c +++ b/sound/core/sound.c @@ -184,7 +184,8 @@ static int snd_open(struct inode *inode, struct file *file) static const struct file_operations snd_fops = { .owner = THIS_MODULE, - .open = snd_open + .open = snd_open, + .llseek = noop_llseek, }; #ifdef CONFIG_SND_DYNAMIC_MINORS -- cgit v1.2.2 From 39aba963d937edb20db7d9d93e6dda5d2adfdcdd Mon Sep 17 00:00:00 2001 From: Kay Sievers Date: Sat, 4 Sep 2010 22:33:14 -0700 Subject: driver core: remove CONFIG_SYSFS_DEPRECATED_V2 but keep it for block devices This patch removes the old CONFIG_SYSFS_DEPRECATED_V2 config option, but it keeps the logic around to handle block devices in the old manner as some people like to run new kernel versions on old (pre 2007/2008) distros. Signed-off-by: Kay Sievers Cc: Jens Axboe Cc: Stephen Hemminger Cc: "Eric W. Biederman" Cc: Alan Stern Cc: "James E.J. Bottomley" Cc: Andrew Morton Cc: Alexey Kuznetsov Cc: Randy Dunlap Cc: Tejun Heo Cc: "David S. Miller" Cc: Jaroslav Kysela Cc: Takashi Iwai Cc: Ingo Molnar Cc: Peter Zijlstra Cc: David Howells Signed-off-by: Greg Kroah-Hartman --- sound/core/init.c | 11 +++-------- 1 file changed, 3 insertions(+), 8 deletions(-) (limited to 'sound/core') diff --git a/sound/core/init.c b/sound/core/init.c index ec4a50ce5656..f7c3df8b521b 100644 --- a/sound/core/init.c +++ b/sound/core/init.c @@ -395,12 +395,10 @@ int snd_card_disconnect(struct snd_card *card) snd_printk(KERN_ERR "not all devices for card %i can be disconnected\n", card->number); snd_info_card_disconnect(card); -#ifndef CONFIG_SYSFS_DEPRECATED if (card->card_dev) { device_unregister(card->card_dev); card->card_dev = NULL; } -#endif #ifdef CONFIG_PM wake_up(&card->power_sleep); #endif @@ -573,7 +571,6 @@ void snd_card_set_id(struct snd_card *card, const char *nid) } EXPORT_SYMBOL(snd_card_set_id); -#ifndef CONFIG_SYSFS_DEPRECATED static ssize_t card_id_show_attr(struct device *dev, struct device_attribute *attr, char *buf) @@ -630,7 +627,6 @@ card_number_show_attr(struct device *dev, static struct device_attribute card_number_attrs = __ATTR(number, S_IRUGO, card_number_show_attr, NULL); -#endif /* CONFIG_SYSFS_DEPRECATED */ /** * snd_card_register - register the soundcard @@ -649,7 +645,7 @@ int snd_card_register(struct snd_card *card) if (snd_BUG_ON(!card)) return -EINVAL; -#ifndef CONFIG_SYSFS_DEPRECATED + if (!card->card_dev) { card->card_dev = device_create(sound_class, card->dev, MKDEV(0, 0), card, @@ -657,7 +653,7 @@ int snd_card_register(struct snd_card *card) if (IS_ERR(card->card_dev)) card->card_dev = NULL; } -#endif + if ((err = snd_device_register_all(card)) < 0) return err; mutex_lock(&snd_card_mutex); @@ -674,7 +670,6 @@ int snd_card_register(struct snd_card *card) if (snd_mixer_oss_notify_callback) snd_mixer_oss_notify_callback(card, SND_MIXER_OSS_NOTIFY_REGISTER); #endif -#ifndef CONFIG_SYSFS_DEPRECATED if (card->card_dev) { err = device_create_file(card->card_dev, &card_id_attrs); if (err < 0) @@ -683,7 +678,7 @@ int snd_card_register(struct snd_card *card) if (err < 0) return err; } -#endif + return 0; } -- cgit v1.2.2 From b595076a180a56d1bb170e6eceda6eb9d76f4cd3 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= Date: Mon, 1 Nov 2010 15:38:34 -0400 Subject: tree-wide: fix comment/printk typos MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit "gadget", "through", "command", "maintain", "maintain", "controller", "address", "between", "initiali[zs]e", "instead", "function", "select", "already", "equal", "access", "management", "hierarchy", "registration", "interest", "relative", "memory", "offset", "already", Signed-off-by: Uwe Kleine-König Signed-off-by: Jiri Kosina --- sound/core/init.c | 2 +- sound/core/pcm_native.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) (limited to 'sound/core') diff --git a/sound/core/init.c b/sound/core/init.c index 57b792e2439a..3e65da21a08c 100644 --- a/sound/core/init.c +++ b/sound/core/init.c @@ -642,7 +642,7 @@ static struct device_attribute card_number_attrs = * external accesses. Thus, you should call this function at the end * of the initialization of the card. * - * Returns zero otherwise a negative error code if the registrain failed. + * Returns zero otherwise a negative error code if the registration failed. */ int snd_card_register(struct snd_card *card) { diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c index 8bc7cb3db330..8e022fc70f55 100644 --- a/sound/core/pcm_native.c +++ b/sound/core/pcm_native.c @@ -985,7 +985,7 @@ static int snd_pcm_do_pause(struct snd_pcm_substream *substream, int push) if (push) snd_pcm_update_hw_ptr(substream); /* The jiffies check in snd_pcm_update_hw_ptr*() is done by - * a delta betwen the current jiffies, this gives a large enough + * a delta between the current jiffies, this gives a large enough * delta, effectively to skip the check once. */ substream->runtime->hw_ptr_jiffies = jiffies - HZ * 1000; -- cgit v1.2.2 From 451a3c24b0135bce54542009b5fde43846c7cf67 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Wed, 17 Nov 2010 16:26:55 +0100 Subject: BKL: remove extraneous #include The big kernel lock has been removed from all these files at some point, leaving only the #include. Remove this too as a cleanup. Signed-off-by: Arnd Bergmann Signed-off-by: Linus Torvalds --- sound/core/info.c | 1 - sound/core/pcm_native.c | 1 - sound/core/sound.c | 1 - 3 files changed, 3 deletions(-) (limited to 'sound/core') diff --git a/sound/core/info.c b/sound/core/info.c index b70564ed8b37..7077f601da5a 100644 --- a/sound/core/info.c +++ b/sound/core/info.c @@ -23,7 +23,6 @@ #include #include #include -#include #include #include #include diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c index 8bc7cb3db330..e82c1f97d99e 100644 --- a/sound/core/pcm_native.c +++ b/sound/core/pcm_native.c @@ -22,7 +22,6 @@ #include #include #include -#include #include #include #include diff --git a/sound/core/sound.c b/sound/core/sound.c index 62a093efb453..66691fe437e6 100644 --- a/sound/core/sound.c +++ b/sound/core/sound.c @@ -21,7 +21,6 @@ #include #include -#include #include #include #include -- cgit v1.2.2 From c80c1d542744dd7851cc8da748c6ada99680fb4d Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Sun, 14 Nov 2010 19:05:02 -0800 Subject: ALSA: sound/core/pcm_lib.c: Remove unnecessary semicolons Signed-off-by: Joe Perches Signed-off-by: Takashi Iwai --- sound/core/pcm_lib.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'sound/core') diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c index a1707cca9c66..b75db8e9cc0f 100644 --- a/sound/core/pcm_lib.c +++ b/sound/core/pcm_lib.c @@ -223,7 +223,7 @@ static void xrun_log(struct snd_pcm_substream *substream, entry->jiffies = jiffies; entry->pos = pos; entry->period_size = runtime->period_size; - entry->buffer_size = runtime->buffer_size;; + entry->buffer_size = runtime->buffer_size; entry->old_hw_ptr = runtime->status->hw_ptr; entry->hw_ptr_base = runtime->hw_ptr_base; log->idx = (log->idx + 1) % XRUN_LOG_CNT; -- cgit v1.2.2 From ab69a4904b5dd4d7cd6996587ba066bca8d13838 Mon Sep 17 00:00:00 2001 From: Clemens Ladisch Date: Mon, 15 Nov 2010 10:46:23 +0100 Subject: ALSA: pcm: support for period wakeup disabling This patch allows to disable period interrupts which are not needed when the application relies on a system timer to wake-up and refill the ring buffer. The behavior of the driver is left unchanged, and interrupts are only disabled if the application requests this configuration. The behavior in case of underruns is slightly different, instead of being detected during the period interrupts the underruns are detected when the application calls snd_pcm_update_avail, which in turns forces a refresh of the hw pointer and shows the buffer is empty. More specifically this patch makes a lot of sense when PulseAudio relies on timer-based scheduling to access audio devices such as HDAudio or Intel SST. Disabling interrupts removes two unwanted wake-ups due to period elapsed events in low-power playback modes. It also simplifies PulseAudio voice modules used for speech calls. To quote Lennart "This patch looks very interesting and desirable. This is something have long been waiting for." Support for this in hardware drivers is optional. Signed-off-by: Pierre-Louis Bossart Signed-off-by: Clemens Ladisch Signed-off-by: Takashi Iwai --- sound/core/pcm_lib.c | 6 ++++++ sound/core/pcm_native.c | 3 +++ 2 files changed, 9 insertions(+) (limited to 'sound/core') diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c index b75db8e9cc0f..bc57501c584a 100644 --- a/sound/core/pcm_lib.c +++ b/sound/core/pcm_lib.c @@ -373,6 +373,11 @@ static int snd_pcm_update_hw_ptr0(struct snd_pcm_substream *substream, (unsigned long)new_hw_ptr, (unsigned long)runtime->hw_ptr_base); } + + /* without period interrupts, there are no regular pointer updates */ + if (runtime->no_period_wakeup) + goto no_delta_check; + /* something must be really wrong */ if (delta >= runtime->buffer_size + runtime->period_size) { hw_ptr_error(substream, @@ -442,6 +447,7 @@ static int snd_pcm_update_hw_ptr0(struct snd_pcm_substream *substream, (long)old_hw_ptr); } + no_delta_check: if (runtime->status->hw_ptr == new_hw_ptr) return 0; diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c index 8bc7cb3db330..f91a439f675c 100644 --- a/sound/core/pcm_native.c +++ b/sound/core/pcm_native.c @@ -423,6 +423,9 @@ static int snd_pcm_hw_params(struct snd_pcm_substream *substream, runtime->info = params->info; runtime->rate_num = params->rate_num; runtime->rate_den = params->rate_den; + runtime->no_period_wakeup = + (params->info & SNDRV_PCM_INFO_NO_PERIOD_WAKEUP) && + (params->flags & SNDRV_PCM_HW_PARAMS_NO_PERIOD_WAKEUP); bits = snd_pcm_format_physical_width(runtime->format); runtime->sample_bits = bits; -- cgit v1.2.2 From 59ff878ffb26bc0be812ca8295799164f413ae88 Mon Sep 17 00:00:00 2001 From: Clemens Ladisch Date: Thu, 18 Nov 2010 09:43:52 +0100 Subject: ALSA: pcm: detect xruns in no-period-wakeup mode When period wakeups are disabled, successive calls to the pointer update function do not have a maximum allowed distance, so xruns cannot be detected with the pointer value only. To detect xruns, compare the actually elapsed time with the time that should have theoretically elapsed since the last update. When the hardware pointer has wrapped around due to an xrun, the actually elapsed time will be too big by about hw_ptr_buffer_jiffies. Signed-off-by: Clemens Ladisch Signed-off-by: Takashi Iwai --- sound/core/pcm_lib.c | 18 ++++++++++++++++-- 1 file changed, 16 insertions(+), 2 deletions(-) (limited to 'sound/core') diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c index bc57501c584a..e9debaabf376 100644 --- a/sound/core/pcm_lib.c +++ b/sound/core/pcm_lib.c @@ -374,9 +374,23 @@ static int snd_pcm_update_hw_ptr0(struct snd_pcm_substream *substream, (unsigned long)runtime->hw_ptr_base); } - /* without period interrupts, there are no regular pointer updates */ - if (runtime->no_period_wakeup) + if (runtime->no_period_wakeup) { + /* + * Without regular period interrupts, we have to check + * the elapsed time to detect xruns. + */ + jdelta = jiffies - runtime->hw_ptr_jiffies; + hdelta = jdelta - delta * HZ / runtime->rate; + while (hdelta > runtime->hw_ptr_buffer_jiffies / 2 + 1) { + delta += runtime->buffer_size; + hw_base += runtime->buffer_size; + if (hw_base >= runtime->boundary) + hw_base = 0; + new_hw_ptr = hw_base + pos; + hdelta -= runtime->hw_ptr_buffer_jiffies; + } goto no_delta_check; + } /* something must be really wrong */ if (delta >= runtime->buffer_size + runtime->period_size) { -- cgit v1.2.2 From 47228e48aecdbec423a1275a5e27697d47f1f912 Mon Sep 17 00:00:00 2001 From: Clemens Ladisch Date: Thu, 18 Nov 2010 09:53:07 +0100 Subject: ALSA: pcm: optimize xrun detection in no-period-wakeup mode Add a lightweight condition on top of the xrun checking so that we can avoid the division when the application is calling the update function often enough. Suggested-by: Jaroslav Kysela Signed-off-by: Clemens Ladisch Signed-off-by: Takashi Iwai --- sound/core/pcm_lib.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'sound/core') diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c index e9debaabf376..fd18c3c6484f 100644 --- a/sound/core/pcm_lib.c +++ b/sound/core/pcm_lib.c @@ -380,6 +380,8 @@ static int snd_pcm_update_hw_ptr0(struct snd_pcm_substream *substream, * the elapsed time to detect xruns. */ jdelta = jiffies - runtime->hw_ptr_jiffies; + if (jdelta < runtime->hw_ptr_buffer_jiffies / 2) + goto no_delta_check; hdelta = jdelta - delta * HZ / runtime->rate; while (hdelta > runtime->hw_ptr_buffer_jiffies / 2 + 1) { delta += runtime->buffer_size; -- cgit v1.2.2 From 109fef9edcc100952eec980acbc2e1295627fbab Mon Sep 17 00:00:00 2001 From: Clemens Ladisch Date: Thu, 18 Nov 2010 09:53:54 +0100 Subject: ALSA: timer: automatically load the high-resolution timer Increase the default timer limit so that snd-hrtimer.ko can be automatically loaded when needed, e.g., when used as the default sequencer timer. This replaces the check for the obsolete CONFIG_SND_HPET. Signed-off-by: Clemens Ladisch Signed-off-by: Takashi Iwai --- sound/core/timer.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'sound/core') diff --git a/sound/core/timer.c b/sound/core/timer.c index 13afb60999b9..b3aaa600dcc2 100644 --- a/sound/core/timer.c +++ b/sound/core/timer.c @@ -34,8 +34,8 @@ #include #include -#if defined(CONFIG_SND_HPET) || defined(CONFIG_SND_HPET_MODULE) -#define DEFAULT_TIMER_LIMIT 3 +#if defined(CONFIG_SND_HRTIMER) || defined(CONFIG_SND_HRTIMER_MODULE) +#define DEFAULT_TIMER_LIMIT 4 #elif defined(CONFIG_SND_RTCTIMER) || defined(CONFIG_SND_RTCTIMER_MODULE) #define DEFAULT_TIMER_LIMIT 2 #else -- cgit v1.2.2 From 03cfe6f57dc5c13ccdd235c23c80e3fa170f03d1 Mon Sep 17 00:00:00 2001 From: Kay Sievers Date: Tue, 23 Nov 2010 17:43:19 +0100 Subject: ALSA: support module on-demand loading for seq and timer If CONFIG_SND_DYNAMIC_MINORS is used, assign /dev/snd/seq and /dev/snd/timer the usual static minors, and export specific module aliases to generate udev module on-demand loading instructions: $ cat /lib/modules/2.6.33.4-smp/modules.devname # Device nodes to trigger on-demand module loading. microcode cpu/microcode c10:184 fuse fuse c10:229 ppp_generic ppp c108:0 tun net/tun c10:200 uinput uinput c10:223 dm_mod mapper/control c10:236 snd_timer snd/timer c116:33 snd_seq snd/seq c116:1 The last two lines instruct udev to create device nodes, even when the modules are not loaded at that time. As soon as userspace accesses any of these nodes, the in-kernel module-loader will load the module, and the device can be used. The header file minor calculation needed to be simplified to make __stringify() (supports only two indirections) in the MODULE_ALIAS macro work. This is part of systemd's effort to get rid of unconditional module load instructions and needless init scripts. Cc: Lennart Poettering Signed-off-by: Kay Sievers Signed-off-by: Clemens Ladisch Signed-off-by: Takashi Iwai --- sound/core/seq/seq.c | 4 ++++ sound/core/sound.c | 18 +++++++++++++----- sound/core/timer.c | 3 +++ 3 files changed, 20 insertions(+), 5 deletions(-) (limited to 'sound/core') diff --git a/sound/core/seq/seq.c b/sound/core/seq/seq.c index bf09a5ad1865..119fddb6fc99 100644 --- a/sound/core/seq/seq.c +++ b/sound/core/seq/seq.c @@ -32,6 +32,7 @@ #include "seq_timer.h" #include "seq_system.h" #include "seq_info.h" +#include #include #if defined(CONFIG_SND_SEQ_DUMMY_MODULE) @@ -73,6 +74,9 @@ MODULE_PARM_DESC(seq_default_timer_subdevice, "The default timer subdevice numbe module_param(seq_default_timer_resolution, int, 0644); MODULE_PARM_DESC(seq_default_timer_resolution, "The default timer resolution in Hz."); +MODULE_ALIAS_CHARDEV(CONFIG_SND_MAJOR, SNDRV_MINOR_SEQUENCER); +MODULE_ALIAS("devname:snd/seq"); + /* * INIT PART */ diff --git a/sound/core/sound.c b/sound/core/sound.c index 62a093efb453..345caea2d749 100644 --- a/sound/core/sound.c +++ b/sound/core/sound.c @@ -189,14 +189,22 @@ static const struct file_operations snd_fops = }; #ifdef CONFIG_SND_DYNAMIC_MINORS -static int snd_find_free_minor(void) +static int snd_find_free_minor(int type) { int minor; + /* static minors for module auto loading */ + if (type == SNDRV_DEVICE_TYPE_SEQUENCER) + return SNDRV_MINOR_SEQUENCER; + if (type == SNDRV_DEVICE_TYPE_TIMER) + return SNDRV_MINOR_TIMER; + for (minor = 0; minor < ARRAY_SIZE(snd_minors); ++minor) { - /* skip minors still used statically for autoloading devices */ - if (SNDRV_MINOR_DEVICE(minor) == SNDRV_MINOR_CONTROL || - minor == SNDRV_MINOR_SEQUENCER) + /* skip static minors still used for module auto loading */ + if (SNDRV_MINOR_DEVICE(minor) == SNDRV_MINOR_CONTROL) + continue; + if (minor == SNDRV_MINOR_SEQUENCER || + minor == SNDRV_MINOR_TIMER) continue; if (!snd_minors[minor]) return minor; @@ -270,7 +278,7 @@ int snd_register_device_for_dev(int type, struct snd_card *card, int dev, preg->private_data = private_data; mutex_lock(&sound_mutex); #ifdef CONFIG_SND_DYNAMIC_MINORS - minor = snd_find_free_minor(); + minor = snd_find_free_minor(type); #else minor = snd_kernel_minor(type, card, dev); if (minor >= 0 && snd_minors[minor]) diff --git a/sound/core/timer.c b/sound/core/timer.c index b3aaa600dcc2..ed016329e911 100644 --- a/sound/core/timer.c +++ b/sound/core/timer.c @@ -52,6 +52,9 @@ MODULE_PARM_DESC(timer_limit, "Maximum global timers in system."); module_param(timer_tstamp_monotonic, int, 0444); MODULE_PARM_DESC(timer_tstamp_monotonic, "Use posix monotonic clock source for timestamps (default)."); +MODULE_ALIAS_CHARDEV(CONFIG_SND_MAJOR, SNDRV_MINOR_TIMER); +MODULE_ALIAS("devname:snd/timer"); + struct snd_timer_user { struct snd_timer_instance *timeri; int tread; /* enhanced read with timestamps and events */ -- cgit v1.2.2 From 60686aa0086a14f8b15c83a09f3df1eebe3aab3c Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Tue, 30 Nov 2010 08:14:21 +0100 Subject: ALSA: Fix SNDCTL_DSP_RESET ioctl for OSS emulation In OSS emulation, SNDCTL_DSP_RESET ioctl needs the reset of the internal buffer state in addition to drop of the running streams. Otherwise the succeeding access becomes inconsistent. Tested-by: Amit Nagal Cc: Signed-off-by: Takashi Iwai --- sound/core/oss/pcm_oss.c | 19 +++++++++++-------- 1 file changed, 11 insertions(+), 8 deletions(-) (limited to 'sound/core') diff --git a/sound/core/oss/pcm_oss.c b/sound/core/oss/pcm_oss.c index 5c8c7dff8ede..b753ec661fcf 100644 --- a/sound/core/oss/pcm_oss.c +++ b/sound/core/oss/pcm_oss.c @@ -1510,16 +1510,19 @@ static ssize_t snd_pcm_oss_read1(struct snd_pcm_substream *substream, char __use static int snd_pcm_oss_reset(struct snd_pcm_oss_file *pcm_oss_file) { struct snd_pcm_substream *substream; + struct snd_pcm_runtime *runtime; + int i; - substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; - if (substream != NULL) { - snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); - substream->runtime->oss.prepare = 1; - } - substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; - if (substream != NULL) { + for (i = 0; i < 2; i++) { + substream = pcm_oss_file->streams[i]; + if (!substream) + continue; + runtime = substream->runtime; snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); - substream->runtime->oss.prepare = 1; + runtime->oss.prepare = 1; + runtime->oss.buffer_used = 0; + runtime->oss.prev_hw_ptr_period = 0; + runtime->oss.period_ptr = 0; } return 0; } -- cgit v1.2.2 From 87a1c8aaa0bced8acf4cd64672362492460c31ae Mon Sep 17 00:00:00 2001 From: Jesper Juhl Date: Tue, 21 Dec 2010 00:03:17 +0100 Subject: ALSA: pcm: remember to always call va_end() on stuff that we va_start() The Coverity checker spotted that we do not always remember to call va_end() on 'args' in failure paths in snd_pcm_hw_rule_add(). Here's a patch to fix that up (compile tested only) - it also removes some annoying trailing whitespace that caught my eye while I was in the area.. Signed-off-by: Jesper Juhl Signed-off-by: Takashi Iwai --- sound/core/pcm_lib.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) (limited to 'sound/core') diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c index b75db8e9cc0f..11446a1506da 100644 --- a/sound/core/pcm_lib.c +++ b/sound/core/pcm_lib.c @@ -1070,8 +1070,10 @@ int snd_pcm_hw_rule_add(struct snd_pcm_runtime *runtime, unsigned int cond, struct snd_pcm_hw_rule *new; unsigned int new_rules = constrs->rules_all + 16; new = kcalloc(new_rules, sizeof(*c), GFP_KERNEL); - if (!new) + if (!new) { + va_end(args); return -ENOMEM; + } if (constrs->rules) { memcpy(new, constrs->rules, constrs->rules_num * sizeof(*c)); @@ -1087,8 +1089,10 @@ int snd_pcm_hw_rule_add(struct snd_pcm_runtime *runtime, unsigned int cond, c->private = private; k = 0; while (1) { - if (snd_BUG_ON(k >= ARRAY_SIZE(c->deps))) + if (snd_BUG_ON(k >= ARRAY_SIZE(c->deps))) { + va_end(args); return -EINVAL; + } c->deps[k++] = dep; if (dep < 0) break; @@ -1097,7 +1101,7 @@ int snd_pcm_hw_rule_add(struct snd_pcm_runtime *runtime, unsigned int cond, constrs->rules_num++; va_end(args); return 0; -} +} EXPORT_SYMBOL(snd_pcm_hw_rule_add); -- cgit v1.2.2 From 3daa7ea650d59ae86926f0ced4c4ccd99ab33fda Mon Sep 17 00:00:00 2001 From: Jesper Juhl Date: Thu, 6 Jan 2011 22:19:47 +0100 Subject: ALSA: Don't leak in sound/core/oss/pcm_oss.c::snd_pcm_hw_param_near() snd_pcm_hw_param_near() will leak the memory allocated to 'save' if the call to snd_pcm_hw_param_max() returns less than zero. This patch makes sure we never leak. Signed-off-by: Jesper Juhl Signed-off-by: Takashi Iwai --- sound/core/oss/pcm_oss.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'sound/core') diff --git a/sound/core/oss/pcm_oss.c b/sound/core/oss/pcm_oss.c index b753ec661fcf..a2e4eb324699 100644 --- a/sound/core/oss/pcm_oss.c +++ b/sound/core/oss/pcm_oss.c @@ -453,8 +453,10 @@ static int snd_pcm_hw_param_near(struct snd_pcm_substream *pcm, } else { *params = *save; max = snd_pcm_hw_param_max(pcm, params, var, max, &maxdir); - if (max < 0) + if (max < 0) { + kfree(save); return max; + } last = 1; } _end: -- cgit v1.2.2 From 9600732b6caba595f34acf2abd930098ec9a0b2b Mon Sep 17 00:00:00 2001 From: Clemens Ladisch Date: Mon, 10 Jan 2011 16:25:44 +0100 Subject: ALSA: core, oxygen, virtuoso: add an enum control info helper Introduce the helper function snd_ctl_enum_info() to fill out the elem_info fields for an enumerated control. Signed-off-by: Clemens Ladisch Signed-off-by: Takashi Iwai --- sound/core/control.c | 28 +++++++++++++++++++++++++++- 1 file changed, 27 insertions(+), 1 deletion(-) (limited to 'sound/core') diff --git a/sound/core/control.c b/sound/core/control.c index 45a818002d99..9ce00ed20fba 100644 --- a/sound/core/control.c +++ b/sound/core/control.c @@ -1488,7 +1488,7 @@ int snd_ctl_create(struct snd_card *card) } /* - * Frequently used control callbacks + * Frequently used control callbacks/helpers */ int snd_ctl_boolean_mono_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) @@ -1513,3 +1513,29 @@ int snd_ctl_boolean_stereo_info(struct snd_kcontrol *kcontrol, } EXPORT_SYMBOL(snd_ctl_boolean_stereo_info); + +/** + * snd_ctl_enum_info - fills the info structure for an enumerated control + * @info: the structure to be filled + * @channels: the number of the control's channels; often one + * @items: the number of control values; also the size of @names + * @names: an array containing the names of all control values + * + * Sets all required fields in @info to their appropriate values. + * If the control's accessibility is not the default (readable and writable), + * the caller has to fill @info->access. + */ +int snd_ctl_enum_info(struct snd_ctl_elem_info *info, unsigned int channels, + unsigned int items, const char *const names[]) +{ + info->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; + info->count = channels; + info->value.enumerated.items = items; + if (info->value.enumerated.item >= items) + info->value.enumerated.item = items - 1; + strlcpy(info->value.enumerated.name, + names[info->value.enumerated.item], + sizeof(info->value.enumerated.name)); + return 0; +} +EXPORT_SYMBOL(snd_ctl_enum_info); -- cgit v1.2.2 From b1d4f7f4bdcf9915c41ff8cfc4425c84dabb1fde Mon Sep 17 00:00:00 2001 From: Clemens Ladisch Date: Thu, 10 Feb 2011 16:15:44 +0100 Subject: ALSA: hrtimer: handle delayed timer interrupts If a timer interrupt was delayed too much, hrtimer_forward_now() will forward the timer expiry more than once. When this happens, the additional number of elapsed ALSA timer ticks must be passed to snd_timer_interrupt() to prevent the ALSA timer from falling behind. This mostly fixes MIDI slowdown problems on highly-loaded systems with badly behaved interrupt handlers. Signed-off-by: Clemens Ladisch Reported-and-tested-by: Arthur Marsh Cc: Signed-off-by: Takashi Iwai --- sound/core/hrtimer.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'sound/core') diff --git a/sound/core/hrtimer.c b/sound/core/hrtimer.c index 7730575bfadd..07efa29dfd4a 100644 --- a/sound/core/hrtimer.c +++ b/sound/core/hrtimer.c @@ -45,12 +45,13 @@ static enum hrtimer_restart snd_hrtimer_callback(struct hrtimer *hrt) { struct snd_hrtimer *stime = container_of(hrt, struct snd_hrtimer, hrt); struct snd_timer *t = stime->timer; + unsigned long oruns; if (!atomic_read(&stime->running)) return HRTIMER_NORESTART; - hrtimer_forward_now(hrt, ns_to_ktime(t->sticks * resolution)); - snd_timer_interrupt(stime->timer, t->sticks); + oruns = hrtimer_forward_now(hrt, ns_to_ktime(t->sticks * resolution)); + snd_timer_interrupt(stime->timer, t->sticks * oruns); if (!atomic_read(&stime->running)) return HRTIMER_NORESTART; -- cgit v1.2.2 From 2243c4d0727ad85aff3f54be9d178632cc9234b2 Mon Sep 17 00:00:00 2001 From: Clemens Ladisch Date: Thu, 10 Feb 2011 16:16:32 +0100 Subject: ALSA: hrtimer: remove superfluous tasklet invocation Commit bb758e9637e5ddc removed snd_hrtimer_callback() from the hardware interrupt handler, thus moving it into a tasklet, but did not tell the ALSA timer framework about this, so the timer handling would now be done in the ALSA timer tasklet scheduled from another tasklet. To fix this, add the flag to tell the ALSA timer framework that the timer handler is already being invoked in a tasklet. Signed-off-by: Clemens Ladisch Signed-off-by: Takashi Iwai --- sound/core/hrtimer.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'sound/core') diff --git a/sound/core/hrtimer.c b/sound/core/hrtimer.c index 07efa29dfd4a..b8b31c433d64 100644 --- a/sound/core/hrtimer.c +++ b/sound/core/hrtimer.c @@ -105,7 +105,7 @@ static int snd_hrtimer_stop(struct snd_timer *t) } static struct snd_timer_hardware hrtimer_hw = { - .flags = SNDRV_TIMER_HW_AUTO, + .flags = SNDRV_TIMER_HW_AUTO | SNDRV_TIMER_HW_TASKLET, .open = snd_hrtimer_open, .close = snd_hrtimer_close, .start = snd_hrtimer_start, -- cgit v1.2.2 From fea952e5cc23ea94b4677ca20774cdc3cea014e2 Mon Sep 17 00:00:00 2001 From: Clemens Ladisch Date: Mon, 14 Feb 2011 11:00:47 +0100 Subject: ALSA: core: sparse cleanups Change the core code where sparse complains. In most cases, this means just adding annotations to confirm that we indeed want to do the dirty things we're doing. Signed-off-by: Clemens Ladisch Signed-off-by: Takashi Iwai --- sound/core/device.c | 7 +++--- sound/core/memalloc.c | 3 ++- sound/core/oss/linear.c | 7 +++--- sound/core/oss/mixer_oss.c | 10 +++++---- sound/core/oss/mulaw.c | 2 +- sound/core/oss/pcm_oss.c | 51 +++++++++++++++++++++++------------------- sound/core/oss/pcm_plugin.c | 40 ++++++++++++++++++--------------- sound/core/oss/pcm_plugin.h | 11 ++++----- sound/core/oss/route.c | 6 ++--- sound/core/pcm.c | 10 ++++----- sound/core/pcm_misc.c | 35 ++++++++++++++++------------- sound/core/pcm_native.c | 2 +- sound/core/seq/seq_clientmgr.c | 7 ++---- sound/core/seq/seq_memory.c | 6 ++--- sound/core/seq/seq_memory.h | 4 ++++ sound/core/vmaster.c | 2 +- 16 files changed, 111 insertions(+), 92 deletions(-) (limited to 'sound/core') diff --git a/sound/core/device.c b/sound/core/device.c index a67dfac08c03..2d1ad4b0cd65 100644 --- a/sound/core/device.c +++ b/sound/core/device.c @@ -225,15 +225,16 @@ int snd_device_free_all(struct snd_card *card, snd_device_cmd_t cmd) { struct snd_device *dev; int err; - unsigned int range_low, range_high; + unsigned int range_low, range_high, type; if (snd_BUG_ON(!card)) return -ENXIO; - range_low = cmd * SNDRV_DEV_TYPE_RANGE_SIZE; + range_low = (__force unsigned int)cmd * SNDRV_DEV_TYPE_RANGE_SIZE; range_high = range_low + SNDRV_DEV_TYPE_RANGE_SIZE - 1; __again: list_for_each_entry(dev, &card->devices, list) { - if (dev->type >= range_low && dev->type <= range_high) { + type = (__force unsigned int)dev->type; + if (type >= range_low && type <= range_high) { if ((err = snd_device_free(card, dev->device_data)) < 0) return err; goto __again; diff --git a/sound/core/memalloc.c b/sound/core/memalloc.c index 9e92441f9b78..16bd9c03679b 100644 --- a/sound/core/memalloc.c +++ b/sound/core/memalloc.c @@ -192,7 +192,8 @@ int snd_dma_alloc_pages(int type, struct device *device, size_t size, dmab->bytes = 0; switch (type) { case SNDRV_DMA_TYPE_CONTINUOUS: - dmab->area = snd_malloc_pages(size, (unsigned long)device); + dmab->area = snd_malloc_pages(size, + (__force gfp_t)(unsigned long)device); dmab->addr = 0; break; #ifdef CONFIG_HAS_DMA diff --git a/sound/core/oss/linear.c b/sound/core/oss/linear.c index 4c1d16827199..13b3f6f49fae 100644 --- a/sound/core/oss/linear.c +++ b/sound/core/oss/linear.c @@ -114,7 +114,8 @@ static snd_pcm_sframes_t linear_transfer(struct snd_pcm_plugin *plugin, return frames; } -static void init_data(struct linear_priv *data, int src_format, int dst_format) +static void init_data(struct linear_priv *data, + snd_pcm_format_t src_format, snd_pcm_format_t dst_format) { int src_le, dst_le, src_bytes, dst_bytes; @@ -140,9 +141,9 @@ static void init_data(struct linear_priv *data, int src_format, int dst_format) if (snd_pcm_format_signed(src_format) != snd_pcm_format_signed(dst_format)) { if (dst_le) - data->flip = cpu_to_le32(0x80000000); + data->flip = (__force u32)cpu_to_le32(0x80000000); else - data->flip = cpu_to_be32(0x80000000); + data->flip = (__force u32)cpu_to_be32(0x80000000); } } diff --git a/sound/core/oss/mixer_oss.c b/sound/core/oss/mixer_oss.c index 822dd56993ca..d8359cfeca15 100644 --- a/sound/core/oss/mixer_oss.c +++ b/sound/core/oss/mixer_oss.c @@ -190,9 +190,10 @@ static int snd_mixer_oss_get_recsrc(struct snd_mixer_oss_file *fmixer) return -EIO; if (mixer->put_recsrc && mixer->get_recsrc) { /* exclusive */ int err; - if ((err = mixer->get_recsrc(fmixer, &result)) < 0) + unsigned int index; + if ((err = mixer->get_recsrc(fmixer, &index)) < 0) return err; - result = 1 << result; + result = 1 << index; } else { struct snd_mixer_oss_slot *pslot; int chn; @@ -214,6 +215,7 @@ static int snd_mixer_oss_set_recsrc(struct snd_mixer_oss_file *fmixer, int recsr struct snd_mixer_oss *mixer = fmixer->mixer; struct snd_mixer_oss_slot *pslot; int chn, active; + unsigned int index; int result = 0; if (mixer == NULL) @@ -222,8 +224,8 @@ static int snd_mixer_oss_set_recsrc(struct snd_mixer_oss_file *fmixer, int recsr if (recsrc & ~mixer->oss_recsrc) recsrc &= ~mixer->oss_recsrc; mixer->put_recsrc(fmixer, ffz(~recsrc)); - mixer->get_recsrc(fmixer, &result); - result = 1 << result; + mixer->get_recsrc(fmixer, &index); + result = 1 << index; } for (chn = 0; chn < 31; chn++) { pslot = &mixer->slots[chn]; diff --git a/sound/core/oss/mulaw.c b/sound/core/oss/mulaw.c index f7649d4d950b..7915564bd394 100644 --- a/sound/core/oss/mulaw.c +++ b/sound/core/oss/mulaw.c @@ -274,7 +274,7 @@ static snd_pcm_sframes_t mulaw_transfer(struct snd_pcm_plugin *plugin, return frames; } -static void init_data(struct mulaw_priv *data, int format) +static void init_data(struct mulaw_priv *data, snd_pcm_format_t format) { #ifdef SNDRV_LITTLE_ENDIAN data->cvt_endian = snd_pcm_format_big_endian(format) > 0; diff --git a/sound/core/oss/pcm_oss.c b/sound/core/oss/pcm_oss.c index a2e4eb324699..23c34a02894b 100644 --- a/sound/core/oss/pcm_oss.c +++ b/sound/core/oss/pcm_oss.c @@ -41,6 +41,7 @@ #include #include #include +#include #define OSS_ALSAEMULVER _SIOR ('M', 249, int) @@ -60,7 +61,6 @@ MODULE_PARM_DESC(nonblock_open, "Don't block opening busy PCM devices."); MODULE_ALIAS_SNDRV_MINOR(SNDRV_MINOR_OSS_PCM); MODULE_ALIAS_SNDRV_MINOR(SNDRV_MINOR_OSS_PCM1); -extern int snd_mixer_oss_ioctl_card(struct snd_card *card, unsigned int cmd, unsigned long arg); static int snd_pcm_oss_get_rate(struct snd_pcm_oss_file *pcm_oss_file); static int snd_pcm_oss_get_channels(struct snd_pcm_oss_file *pcm_oss_file); static int snd_pcm_oss_get_format(struct snd_pcm_oss_file *pcm_oss_file); @@ -656,7 +656,7 @@ snd_pcm_uframes_t get_hw_ptr_period(struct snd_pcm_runtime *runtime) #define AFMT_AC3 0x00000400 #define AFMT_VORBIS 0x00000800 -static int snd_pcm_oss_format_from(int format) +static snd_pcm_format_t snd_pcm_oss_format_from(int format) { switch (format) { case AFMT_MU_LAW: return SNDRV_PCM_FORMAT_MU_LAW; @@ -680,7 +680,7 @@ static int snd_pcm_oss_format_from(int format) } } -static int snd_pcm_oss_format_to(int format) +static int snd_pcm_oss_format_to(snd_pcm_format_t format) { switch (format) { case SNDRV_PCM_FORMAT_MU_LAW: return AFMT_MU_LAW; @@ -843,7 +843,8 @@ static int snd_pcm_oss_change_params(struct snd_pcm_substream *substream) size_t oss_frame_size; int err; int direct; - int format, sformat, n; + snd_pcm_format_t format, sformat; + int n; struct snd_mask sformat_mask; struct snd_mask mask; @@ -868,11 +869,11 @@ static int snd_pcm_oss_change_params(struct snd_pcm_substream *substream) _snd_pcm_hw_param_min(sparams, SNDRV_PCM_HW_PARAM_PERIODS, 2, 0); snd_mask_none(&mask); if (atomic_read(&substream->mmap_count)) - snd_mask_set(&mask, SNDRV_PCM_ACCESS_MMAP_INTERLEAVED); + snd_mask_set(&mask, (__force int)SNDRV_PCM_ACCESS_MMAP_INTERLEAVED); else { - snd_mask_set(&mask, SNDRV_PCM_ACCESS_RW_INTERLEAVED); + snd_mask_set(&mask, (__force int)SNDRV_PCM_ACCESS_RW_INTERLEAVED); if (!direct) - snd_mask_set(&mask, SNDRV_PCM_ACCESS_RW_NONINTERLEAVED); + snd_mask_set(&mask, (__force int)SNDRV_PCM_ACCESS_RW_NONINTERLEAVED); } err = snd_pcm_hw_param_mask(substream, sparams, SNDRV_PCM_HW_PARAM_ACCESS, &mask); if (err < 0) { @@ -891,19 +892,22 @@ static int snd_pcm_oss_change_params(struct snd_pcm_substream *substream) else sformat = snd_pcm_plug_slave_format(format, &sformat_mask); - if (sformat < 0 || !snd_mask_test(&sformat_mask, sformat)) { - for (sformat = 0; sformat <= SNDRV_PCM_FORMAT_LAST; sformat++) { - if (snd_mask_test(&sformat_mask, sformat) && + if ((__force int)sformat < 0 || + !snd_mask_test(&sformat_mask, (__force int)sformat)) { + for (sformat = (__force snd_pcm_format_t)0; + (__force int)sformat <= (__force int)SNDRV_PCM_FORMAT_LAST; + sformat = (__force snd_pcm_format_t)((__force int)sformat + 1)) { + if (snd_mask_test(&sformat_mask, (__force int)sformat) && snd_pcm_oss_format_to(sformat) >= 0) break; } - if (sformat > SNDRV_PCM_FORMAT_LAST) { + if ((__force int)sformat > (__force int)SNDRV_PCM_FORMAT_LAST) { snd_printd("Cannot find a format!!!\n"); err = -EINVAL; goto failure; } } - err = _snd_pcm_hw_param_set(sparams, SNDRV_PCM_HW_PARAM_FORMAT, sformat, 0); + err = _snd_pcm_hw_param_set(sparams, SNDRV_PCM_HW_PARAM_FORMAT, (__force int)sformat, 0); if (err < 0) goto failure; @@ -912,9 +916,9 @@ static int snd_pcm_oss_change_params(struct snd_pcm_substream *substream) } else { _snd_pcm_hw_params_any(params); _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_ACCESS, - SNDRV_PCM_ACCESS_RW_INTERLEAVED, 0); + (__force int)SNDRV_PCM_ACCESS_RW_INTERLEAVED, 0); _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_FORMAT, - snd_pcm_oss_format_from(runtime->oss.format), 0); + (__force int)snd_pcm_oss_format_from(runtime->oss.format), 0); _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_CHANNELS, runtime->oss.channels, 0); _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_RATE, @@ -1185,10 +1189,10 @@ snd_pcm_sframes_t snd_pcm_oss_write3(struct snd_pcm_substream *substream, const if (in_kernel) { mm_segment_t fs; fs = snd_enter_user(); - ret = snd_pcm_lib_write(substream, (void __user *)ptr, frames); + ret = snd_pcm_lib_write(substream, (void __force __user *)ptr, frames); snd_leave_user(fs); } else { - ret = snd_pcm_lib_write(substream, (void __user *)ptr, frames); + ret = snd_pcm_lib_write(substream, (void __force __user *)ptr, frames); } if (ret != -EPIPE && ret != -ESTRPIPE) break; @@ -1230,10 +1234,10 @@ snd_pcm_sframes_t snd_pcm_oss_read3(struct snd_pcm_substream *substream, char *p if (in_kernel) { mm_segment_t fs; fs = snd_enter_user(); - ret = snd_pcm_lib_read(substream, (void __user *)ptr, frames); + ret = snd_pcm_lib_read(substream, (void __force __user *)ptr, frames); snd_leave_user(fs); } else { - ret = snd_pcm_lib_read(substream, (void __user *)ptr, frames); + ret = snd_pcm_lib_read(substream, (void __force __user *)ptr, frames); } if (ret == -EPIPE) { if (runtime->status->state == SNDRV_PCM_STATE_DRAINING) { @@ -1333,7 +1337,7 @@ static ssize_t snd_pcm_oss_write2(struct snd_pcm_substream *substream, const cha struct snd_pcm_plugin_channel *channels; size_t oss_frame_bytes = (runtime->oss.plugin_first->src_width * runtime->oss.plugin_first->src_format.channels) / 8; if (!in_kernel) { - if (copy_from_user(runtime->oss.buffer, (const char __user *)buf, bytes)) + if (copy_from_user(runtime->oss.buffer, (const char __force __user *)buf, bytes)) return -EFAULT; buf = runtime->oss.buffer; } @@ -1429,7 +1433,7 @@ static ssize_t snd_pcm_oss_read2(struct snd_pcm_substream *substream, char *buf, struct snd_pcm_runtime *runtime = substream->runtime; snd_pcm_sframes_t frames, frames1; #ifdef CONFIG_SND_PCM_OSS_PLUGINS - char __user *final_dst = (char __user *)buf; + char __user *final_dst = (char __force __user *)buf; if (runtime->oss.plugin_first) { struct snd_pcm_plugin_channel *channels; size_t oss_frame_bytes = (runtime->oss.plugin_last->dst_width * runtime->oss.plugin_last->dst_format.channels) / 8; @@ -1549,6 +1553,7 @@ static int snd_pcm_oss_sync1(struct snd_pcm_substream *substream, size_t size) { struct snd_pcm_runtime *runtime; ssize_t result = 0; + snd_pcm_state_t state; long res; wait_queue_t wait; @@ -1570,9 +1575,9 @@ static int snd_pcm_oss_sync1(struct snd_pcm_substream *substream, size_t size) result = 0; set_current_state(TASK_INTERRUPTIBLE); snd_pcm_stream_lock_irq(substream); - res = runtime->status->state; + state = runtime->status->state; snd_pcm_stream_unlock_irq(substream); - if (res != SNDRV_PCM_STATE_RUNNING) { + if (state != SNDRV_PCM_STATE_RUNNING) { set_current_state(TASK_RUNNING); break; } @@ -1658,7 +1663,7 @@ static int snd_pcm_oss_sync(struct snd_pcm_oss_file *pcm_oss_file) size1); size1 /= runtime->channels; /* frames */ fs = snd_enter_user(); - snd_pcm_lib_write(substream, (void __user *)runtime->oss.buffer, size1); + snd_pcm_lib_write(substream, (void __force __user *)runtime->oss.buffer, size1); snd_leave_user(fs); } } else if (runtime->access == SNDRV_PCM_ACCESS_RW_NONINTERLEAVED) { diff --git a/sound/core/oss/pcm_plugin.c b/sound/core/oss/pcm_plugin.c index 6751daa3bb50..71cc3ddf5c15 100644 --- a/sound/core/oss/pcm_plugin.c +++ b/sound/core/oss/pcm_plugin.c @@ -264,7 +264,7 @@ snd_pcm_sframes_t snd_pcm_plug_slave_size(struct snd_pcm_substream *plug, snd_pc return frames; } -static int snd_pcm_plug_formats(struct snd_mask *mask, int format) +static int snd_pcm_plug_formats(struct snd_mask *mask, snd_pcm_format_t format) { struct snd_mask formats = *mask; u64 linfmts = (SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S8 | @@ -276,16 +276,16 @@ static int snd_pcm_plug_formats(struct snd_mask *mask, int format) SNDRV_PCM_FMTBIT_U24_3BE | SNDRV_PCM_FMTBIT_S24_3BE | SNDRV_PCM_FMTBIT_U32_LE | SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_U32_BE | SNDRV_PCM_FMTBIT_S32_BE); - snd_mask_set(&formats, SNDRV_PCM_FORMAT_MU_LAW); + snd_mask_set(&formats, (__force int)SNDRV_PCM_FORMAT_MU_LAW); if (formats.bits[0] & (u32)linfmts) formats.bits[0] |= (u32)linfmts; if (formats.bits[1] & (u32)(linfmts >> 32)) formats.bits[1] |= (u32)(linfmts >> 32); - return snd_mask_test(&formats, format); + return snd_mask_test(&formats, (__force int)format); } -static int preferred_formats[] = { +static snd_pcm_format_t preferred_formats[] = { SNDRV_PCM_FORMAT_S16_LE, SNDRV_PCM_FORMAT_S16_BE, SNDRV_PCM_FORMAT_U16_LE, @@ -306,24 +306,25 @@ static int preferred_formats[] = { SNDRV_PCM_FORMAT_U8 }; -int snd_pcm_plug_slave_format(int format, struct snd_mask *format_mask) +snd_pcm_format_t snd_pcm_plug_slave_format(snd_pcm_format_t format, + struct snd_mask *format_mask) { int i; - if (snd_mask_test(format_mask, format)) + if (snd_mask_test(format_mask, (__force int)format)) return format; - if (! snd_pcm_plug_formats(format_mask, format)) - return -EINVAL; + if (!snd_pcm_plug_formats(format_mask, format)) + return (__force snd_pcm_format_t)-EINVAL; if (snd_pcm_format_linear(format)) { unsigned int width = snd_pcm_format_width(format); int unsignd = snd_pcm_format_unsigned(format) > 0; int big = snd_pcm_format_big_endian(format) > 0; unsigned int badness, best = -1; - int best_format = -1; + snd_pcm_format_t best_format = (__force snd_pcm_format_t)-1; for (i = 0; i < ARRAY_SIZE(preferred_formats); i++) { - int f = preferred_formats[i]; + snd_pcm_format_t f = preferred_formats[i]; unsigned int w; - if (!snd_mask_test(format_mask, f)) + if (!snd_mask_test(format_mask, (__force int)f)) continue; w = snd_pcm_format_width(f); if (w >= width) @@ -337,17 +338,20 @@ int snd_pcm_plug_slave_format(int format, struct snd_mask *format_mask) best = badness; } } - return best_format >= 0 ? best_format : -EINVAL; + if ((__force int)best_format >= 0) + return best_format; + else + return (__force snd_pcm_format_t)-EINVAL; } else { switch (format) { case SNDRV_PCM_FORMAT_MU_LAW: for (i = 0; i < ARRAY_SIZE(preferred_formats); ++i) { - int format1 = preferred_formats[i]; - if (snd_mask_test(format_mask, format1)) + snd_pcm_format_t format1 = preferred_formats[i]; + if (snd_mask_test(format_mask, (__force int)format1)) return format1; } default: - return -EINVAL; + return (__force snd_pcm_format_t)-EINVAL; } } } @@ -359,7 +363,7 @@ int snd_pcm_plug_format_plugins(struct snd_pcm_substream *plug, struct snd_pcm_plugin_format tmpformat; struct snd_pcm_plugin_format dstformat; struct snd_pcm_plugin_format srcformat; - int src_access, dst_access; + snd_pcm_access_t src_access, dst_access; struct snd_pcm_plugin *plugin = NULL; int err; int stream = snd_pcm_plug_stream(plug); @@ -641,7 +645,7 @@ snd_pcm_sframes_t snd_pcm_plug_read_transfer(struct snd_pcm_substream *plug, str } int snd_pcm_area_silence(const struct snd_pcm_channel_area *dst_area, size_t dst_offset, - size_t samples, int format) + size_t samples, snd_pcm_format_t format) { /* FIXME: sub byte resolution and odd dst_offset */ unsigned char *dst; @@ -688,7 +692,7 @@ int snd_pcm_area_silence(const struct snd_pcm_channel_area *dst_area, size_t dst int snd_pcm_area_copy(const struct snd_pcm_channel_area *src_area, size_t src_offset, const struct snd_pcm_channel_area *dst_area, size_t dst_offset, - size_t samples, int format) + size_t samples, snd_pcm_format_t format) { /* FIXME: sub byte resolution and odd dst_offset */ char *src, *dst; diff --git a/sound/core/oss/pcm_plugin.h b/sound/core/oss/pcm_plugin.h index b9afab603711..a5035c2369a6 100644 --- a/sound/core/oss/pcm_plugin.h +++ b/sound/core/oss/pcm_plugin.h @@ -46,7 +46,7 @@ struct snd_pcm_plugin_channel { }; struct snd_pcm_plugin_format { - int format; + snd_pcm_format_t format; unsigned int rate; unsigned int channels; }; @@ -58,7 +58,7 @@ struct snd_pcm_plugin { struct snd_pcm_plugin_format dst_format; /* destination format */ int src_width; /* sample width in bits */ int dst_width; /* sample width in bits */ - int access; + snd_pcm_access_t access; snd_pcm_sframes_t (*src_frames)(struct snd_pcm_plugin *plugin, snd_pcm_uframes_t dst_frames); snd_pcm_sframes_t (*dst_frames)(struct snd_pcm_plugin *plugin, snd_pcm_uframes_t src_frames); snd_pcm_sframes_t (*client_channels)(struct snd_pcm_plugin *plugin, @@ -125,7 +125,8 @@ int snd_pcm_plug_format_plugins(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct snd_pcm_hw_params *slave_params); -int snd_pcm_plug_slave_format(int format, struct snd_mask *format_mask); +snd_pcm_format_t snd_pcm_plug_slave_format(snd_pcm_format_t format, + struct snd_mask *format_mask); int snd_pcm_plugin_append(struct snd_pcm_plugin *plugin); @@ -146,12 +147,12 @@ snd_pcm_sframes_t snd_pcm_plugin_client_channels(struct snd_pcm_plugin *plugin, int snd_pcm_area_silence(const struct snd_pcm_channel_area *dst_channel, size_t dst_offset, - size_t samples, int format); + size_t samples, snd_pcm_format_t format); int snd_pcm_area_copy(const struct snd_pcm_channel_area *src_channel, size_t src_offset, const struct snd_pcm_channel_area *dst_channel, size_t dst_offset, - size_t samples, int format); + size_t samples, snd_pcm_format_t format); void *snd_pcm_plug_buf_alloc(struct snd_pcm_substream *plug, snd_pcm_uframes_t size); void snd_pcm_plug_buf_unlock(struct snd_pcm_substream *plug, void *ptr); diff --git a/sound/core/oss/route.c b/sound/core/oss/route.c index bbe25d8c450a..c8171f5783c8 100644 --- a/sound/core/oss/route.c +++ b/sound/core/oss/route.c @@ -25,7 +25,7 @@ #include "pcm_plugin.h" static void zero_areas(struct snd_pcm_plugin_channel *dvp, int ndsts, - snd_pcm_uframes_t frames, int format) + snd_pcm_uframes_t frames, snd_pcm_format_t format) { int dst = 0; for (; dst < ndsts; ++dst) { @@ -38,7 +38,7 @@ static void zero_areas(struct snd_pcm_plugin_channel *dvp, int ndsts, static inline void copy_area(const struct snd_pcm_plugin_channel *src_channel, struct snd_pcm_plugin_channel *dst_channel, - snd_pcm_uframes_t frames, int format) + snd_pcm_uframes_t frames, snd_pcm_format_t format) { dst_channel->enabled = 1; snd_pcm_area_copy(&src_channel->area, 0, &dst_channel->area, 0, frames, format); @@ -51,7 +51,7 @@ static snd_pcm_sframes_t route_transfer(struct snd_pcm_plugin *plugin, { int nsrcs, ndsts, dst; struct snd_pcm_plugin_channel *dvp; - int format; + snd_pcm_format_t format; if (snd_BUG_ON(!plugin || !src_channels || !dst_channels)) return -ENXIO; diff --git a/sound/core/pcm.c b/sound/core/pcm.c index 6b4b1287b314..ee9abb2d9001 100644 --- a/sound/core/pcm.c +++ b/sound/core/pcm.c @@ -211,9 +211,9 @@ static char *snd_pcm_format_names[] = { const char *snd_pcm_format_name(snd_pcm_format_t format) { - if (format >= ARRAY_SIZE(snd_pcm_format_names)) + if ((__force unsigned int)format >= ARRAY_SIZE(snd_pcm_format_names)) return "Unknown"; - return snd_pcm_format_names[format]; + return snd_pcm_format_names[(__force unsigned int)format]; } EXPORT_SYMBOL_GPL(snd_pcm_format_name); @@ -269,12 +269,12 @@ static const char *snd_pcm_stream_name(int stream) static const char *snd_pcm_access_name(snd_pcm_access_t access) { - return snd_pcm_access_names[access]; + return snd_pcm_access_names[(__force int)access]; } static const char *snd_pcm_subformat_name(snd_pcm_subformat_t subformat) { - return snd_pcm_subformat_names[subformat]; + return snd_pcm_subformat_names[(__force int)subformat]; } static const char *snd_pcm_tstamp_mode_name(int mode) @@ -284,7 +284,7 @@ static const char *snd_pcm_tstamp_mode_name(int mode) static const char *snd_pcm_state_name(snd_pcm_state_t state) { - return snd_pcm_state_names[state]; + return snd_pcm_state_names[(__force int)state]; } #if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE) diff --git a/sound/core/pcm_misc.c b/sound/core/pcm_misc.c index 434af3c56d52..88f02e3866e0 100644 --- a/sound/core/pcm_misc.c +++ b/sound/core/pcm_misc.c @@ -35,7 +35,10 @@ struct pcm_format_data { unsigned char silence[8]; /* silence data to fill */ }; -static struct pcm_format_data pcm_formats[SNDRV_PCM_FORMAT_LAST+1] = { +/* we do lots of calculations on snd_pcm_format_t; shut up sparse */ +#define INT __force int + +static struct pcm_format_data pcm_formats[(INT)SNDRV_PCM_FORMAT_LAST+1] = { [SNDRV_PCM_FORMAT_S8] = { .width = 8, .phys = 8, .le = -1, .signd = 1, .silence = {}, @@ -215,9 +218,9 @@ static struct pcm_format_data pcm_formats[SNDRV_PCM_FORMAT_LAST+1] = { int snd_pcm_format_signed(snd_pcm_format_t format) { int val; - if (format < 0 || format > SNDRV_PCM_FORMAT_LAST) + if ((INT)format < 0 || (INT)format > (INT)SNDRV_PCM_FORMAT_LAST) return -EINVAL; - if ((val = pcm_formats[format].signd) < 0) + if ((val = pcm_formats[(INT)format].signd) < 0) return -EINVAL; return val; } @@ -266,9 +269,9 @@ EXPORT_SYMBOL(snd_pcm_format_linear); int snd_pcm_format_little_endian(snd_pcm_format_t format) { int val; - if (format < 0 || format > SNDRV_PCM_FORMAT_LAST) + if ((INT)format < 0 || (INT)format > (INT)SNDRV_PCM_FORMAT_LAST) return -EINVAL; - if ((val = pcm_formats[format].le) < 0) + if ((val = pcm_formats[(INT)format].le) < 0) return -EINVAL; return val; } @@ -304,9 +307,9 @@ EXPORT_SYMBOL(snd_pcm_format_big_endian); int snd_pcm_format_width(snd_pcm_format_t format) { int val; - if (format < 0 || format > SNDRV_PCM_FORMAT_LAST) + if ((INT)format < 0 || (INT)format > (INT)SNDRV_PCM_FORMAT_LAST) return -EINVAL; - if ((val = pcm_formats[format].width) == 0) + if ((val = pcm_formats[(INT)format].width) == 0) return -EINVAL; return val; } @@ -323,9 +326,9 @@ EXPORT_SYMBOL(snd_pcm_format_width); int snd_pcm_format_physical_width(snd_pcm_format_t format) { int val; - if (format < 0 || format > SNDRV_PCM_FORMAT_LAST) + if ((INT)format < 0 || (INT)format > (INT)SNDRV_PCM_FORMAT_LAST) return -EINVAL; - if ((val = pcm_formats[format].phys) == 0) + if ((val = pcm_formats[(INT)format].phys) == 0) return -EINVAL; return val; } @@ -358,11 +361,11 @@ EXPORT_SYMBOL(snd_pcm_format_size); */ const unsigned char *snd_pcm_format_silence_64(snd_pcm_format_t format) { - if (format < 0 || format > SNDRV_PCM_FORMAT_LAST) + if ((INT)format < 0 || (INT)format > (INT)SNDRV_PCM_FORMAT_LAST) return NULL; - if (! pcm_formats[format].phys) + if (! pcm_formats[(INT)format].phys) return NULL; - return pcm_formats[format].silence; + return pcm_formats[(INT)format].silence; } EXPORT_SYMBOL(snd_pcm_format_silence_64); @@ -382,16 +385,16 @@ int snd_pcm_format_set_silence(snd_pcm_format_t format, void *data, unsigned int int width; unsigned char *dst, *pat; - if (format < 0 || format > SNDRV_PCM_FORMAT_LAST) + if ((INT)format < 0 || (INT)format > (INT)SNDRV_PCM_FORMAT_LAST) return -EINVAL; if (samples == 0) return 0; - width = pcm_formats[format].phys; /* physical width */ - pat = pcm_formats[format].silence; + width = pcm_formats[(INT)format].phys; /* physical width */ + pat = pcm_formats[(INT)format].silence; if (! width) return -EINVAL; /* signed or 1 byte data */ - if (pcm_formats[format].signd == 1 || width <= 8) { + if (pcm_formats[(INT)format].signd == 1 || width <= 8) { unsigned int bytes = samples * width / 8; memset(data, *pat, bytes); return 0; diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c index 4be45e7be8ad..ae42b6509ce4 100644 --- a/sound/core/pcm_native.c +++ b/sound/core/pcm_native.c @@ -941,7 +941,7 @@ static struct action_ops snd_pcm_action_stop = { * * The state of each stream is then changed to the given state unconditionally. */ -int snd_pcm_stop(struct snd_pcm_substream *substream, int state) +int snd_pcm_stop(struct snd_pcm_substream *substream, snd_pcm_state_t state) { return snd_pcm_action(&snd_pcm_action_stop, substream, state); } diff --git a/sound/core/seq/seq_clientmgr.c b/sound/core/seq/seq_clientmgr.c index 99a485f13648..f2436d33fbf7 100644 --- a/sound/core/seq/seq_clientmgr.c +++ b/sound/core/seq/seq_clientmgr.c @@ -1052,7 +1052,7 @@ static ssize_t snd_seq_write(struct file *file, const char __user *buf, } else { #ifdef CONFIG_COMPAT if (client->convert32 && snd_seq_ev_is_varusr(&event)) { - void *ptr = compat_ptr(event.data.raw32.d[1]); + void *ptr = (void __force *)compat_ptr(event.data.raw32.d[1]); event.data.ext.ptr = ptr; } #endif @@ -2407,7 +2407,7 @@ int snd_seq_kernel_client_ctl(int clientid, unsigned int cmd, void *arg) if (client == NULL) return -ENXIO; fs = snd_enter_user(); - result = snd_seq_do_ioctl(client, cmd, (void __user *)arg); + result = snd_seq_do_ioctl(client, cmd, (void __force __user *)arg); snd_leave_user(fs); return result; } @@ -2497,9 +2497,6 @@ static void snd_seq_info_dump_ports(struct snd_info_buffer *buffer, } -void snd_seq_info_pool(struct snd_info_buffer *buffer, - struct snd_seq_pool *pool, char *space); - /* exported to seq_info.c */ void snd_seq_info_clients_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer) diff --git a/sound/core/seq/seq_memory.c b/sound/core/seq/seq_memory.c index 7fb55436287f..7f50c1437675 100644 --- a/sound/core/seq/seq_memory.c +++ b/sound/core/seq/seq_memory.c @@ -86,7 +86,7 @@ int snd_seq_dump_var_event(const struct snd_seq_event *event, if (event->data.ext.len & SNDRV_SEQ_EXT_USRPTR) { char buf[32]; - char __user *curptr = (char __user *)event->data.ext.ptr; + char __user *curptr = (char __force __user *)event->data.ext.ptr; while (len > 0) { int size = sizeof(buf); if (len < size) @@ -157,7 +157,7 @@ int snd_seq_expand_var_event(const struct snd_seq_event *event, int count, char if (event->data.ext.len & SNDRV_SEQ_EXT_USRPTR) { if (! in_kernel) return -EINVAL; - if (copy_from_user(buf, (void __user *)event->data.ext.ptr, len)) + if (copy_from_user(buf, (void __force __user *)event->data.ext.ptr, len)) return -EFAULT; return newlen; } @@ -343,7 +343,7 @@ int snd_seq_event_dup(struct snd_seq_pool *pool, struct snd_seq_event *event, tmp->event = src->event; src = src->next; } else if (is_usrptr) { - if (copy_from_user(&tmp->event, (char __user *)buf, size)) { + if (copy_from_user(&tmp->event, (char __force __user *)buf, size)) { err = -EFAULT; goto __error; } diff --git a/sound/core/seq/seq_memory.h b/sound/core/seq/seq_memory.h index 63e91431a29f..4a2ec779b8a7 100644 --- a/sound/core/seq/seq_memory.h +++ b/sound/core/seq/seq_memory.h @@ -24,6 +24,8 @@ #include #include +struct snd_info_buffer; + /* container for sequencer event (internal use) */ struct snd_seq_event_cell { struct snd_seq_event event; @@ -99,5 +101,7 @@ void snd_sequencer_memory_done(void); /* polling */ int snd_seq_pool_poll_wait(struct snd_seq_pool *pool, struct file *file, poll_table *wait); +void snd_seq_info_pool(struct snd_info_buffer *buffer, + struct snd_seq_pool *pool, char *space); #endif diff --git a/sound/core/vmaster.c b/sound/core/vmaster.c index 3b9b550109cb..a89948ae9e8d 100644 --- a/sound/core/vmaster.c +++ b/sound/core/vmaster.c @@ -18,7 +18,7 @@ * a subset of information returned via ctl info callback */ struct link_ctl_info { - int type; /* value type */ + snd_ctl_elem_type_t type; /* value type */ int count; /* item count */ int min_val, max_val; /* min, max values */ }; -- cgit v1.2.2 From eeda276bef36026fce3029e6423e1a09a50c359e Mon Sep 17 00:00:00 2001 From: Lu Guanqun Date: Mon, 21 Feb 2011 13:45:04 +0800 Subject: ALSA: fix one memory leak in sound jack Signed-off-by: Lu Guanqun Reviewed-by: Wu Fengguang Signed-off-by: Takashi Iwai --- sound/core/jack.c | 1 + 1 file changed, 1 insertion(+) (limited to 'sound/core') diff --git a/sound/core/jack.c b/sound/core/jack.c index 4902ae568730..53b53e97c896 100644 --- a/sound/core/jack.c +++ b/sound/core/jack.c @@ -141,6 +141,7 @@ int snd_jack_new(struct snd_card *card, const char *id, int type, fail_input: input_free_device(jack->input_dev); + kfree(jack->id); kfree(jack); return err; } -- cgit v1.2.2 From b6aa63eeb3e9670edd44162b441b6b7de304fed0 Mon Sep 17 00:00:00 2001 From: "Justin P. Mattock" Date: Sat, 26 Feb 2011 20:34:10 -0800 Subject: sound:core:seq:seq_ports.c Remove one to many n's in a word. The Patch below removes one to many "n's" in a word.. Signed-off-by: Justin P. Mattock Signed-off-by: Takashi Iwai --- sound/core/seq/seq_ports.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'sound/core') diff --git a/sound/core/seq/seq_ports.c b/sound/core/seq/seq_ports.c index 3bf7d73ac52e..e12bcd94b6db 100644 --- a/sound/core/seq/seq_ports.c +++ b/sound/core/seq/seq_ports.c @@ -412,7 +412,7 @@ int snd_seq_get_port_info(struct snd_seq_client_port * port, * initialization or termination of devices (see seq_midi.c). * * If callback_all option is set, the callback function is invoked - * at each connnection/disconnection. + * at each connection/disconnection. */ static int subscribe_port(struct snd_seq_client *client, -- cgit v1.2.2 From 7c7335877105364f7f5181e80ff34206b54be81f Mon Sep 17 00:00:00 2001 From: Clemens Ladisch Date: Mon, 7 Mar 2011 13:22:50 +0100 Subject: ALSA: control: fix numid conflict check for new controls The purpose of the snd_ctl_hole_check() function is to find conflicts between the numerical IDs of the new control and those of any existing controls. However, it would fail to detect an existing control whose count is smaller than the new control's count and whose interval of IDs is entirely contained in the interval of the new control's IDs. To fix this, use the correct formula to detect overlapping intervals, which happens to simplify the condition. This problem was not encountered so far because ALSA does not yet allow drivers to allocate specific control IDs. Signed-off-by: Clemens Ladisch Signed-off-by: Takashi Iwai --- sound/core/control.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) (limited to 'sound/core') diff --git a/sound/core/control.c b/sound/core/control.c index 9ce00ed20fba..d1b5ce818a4f 100644 --- a/sound/core/control.c +++ b/sound/core/control.c @@ -285,10 +285,8 @@ static unsigned int snd_ctl_hole_check(struct snd_card *card, struct snd_kcontrol *kctl; list_for_each_entry(kctl, &card->controls, list) { - if ((kctl->id.numid <= card->last_numid && - kctl->id.numid + kctl->count > card->last_numid) || - (kctl->id.numid <= card->last_numid + count - 1 && - kctl->id.numid + kctl->count > card->last_numid + count - 1)) + if (kctl->id.numid < card->last_numid + 1 + count && + kctl->id.numid + kctl->count > card->last_numid + 1) return card->last_numid = kctl->id.numid + kctl->count - 1; } return card->last_numid; -- cgit v1.2.2 From 0e82e5fa97614c9ca3efca5f8dca69dffd1c0ec0 Mon Sep 17 00:00:00 2001 From: Clemens Ladisch Date: Mon, 7 Mar 2011 13:24:30 +0100 Subject: ALSA: control: clean up snd_ctl_hole_check() The return value of snd_ctl_hole_check() is used only to detect whether to continue the loop in snd_ctl_find_hole() or not, so we can simplify the code by changing this return type to a boolean. Also rename this function to better show what it actually does. Signed-off-by: Clemens Ladisch Signed-off-by: Takashi Iwai --- sound/core/control.c | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) (limited to 'sound/core') diff --git a/sound/core/control.c b/sound/core/control.c index d1b5ce818a4f..dc4afa6f99b1 100644 --- a/sound/core/control.c +++ b/sound/core/control.c @@ -279,31 +279,31 @@ void snd_ctl_free_one(struct snd_kcontrol *kcontrol) EXPORT_SYMBOL(snd_ctl_free_one); -static unsigned int snd_ctl_hole_check(struct snd_card *card, - unsigned int count) +static bool snd_ctl_remove_numid_conflict(struct snd_card *card, + unsigned int count) { struct snd_kcontrol *kctl; list_for_each_entry(kctl, &card->controls, list) { if (kctl->id.numid < card->last_numid + 1 + count && - kctl->id.numid + kctl->count > card->last_numid + 1) - return card->last_numid = kctl->id.numid + kctl->count - 1; + kctl->id.numid + kctl->count > card->last_numid + 1) { + card->last_numid = kctl->id.numid + kctl->count - 1; + return true; + } } - return card->last_numid; + return false; } static int snd_ctl_find_hole(struct snd_card *card, unsigned int count) { - unsigned int last_numid, iter = 100000; + unsigned int iter = 100000; - last_numid = card->last_numid; - while (last_numid != snd_ctl_hole_check(card, count)) { + while (snd_ctl_remove_numid_conflict(card, count)) { if (--iter == 0) { /* this situation is very unlikely */ snd_printk(KERN_ERR "unable to allocate new control numid\n"); return -ENOMEM; } - last_numid = card->last_numid; } return 0; } -- cgit v1.2.2 From 3cbdd7533148f00444013700af89548b8cf32646 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Fri, 29 Aug 2008 16:09:01 +0200 Subject: ALSA: Add snd_ctl_activate_id() Added a new API function snd_ctl_activate_id() for activate / inactivate the control element dynamically. Signed-off-by: Takashi Iwai Signed-off-by: Mark Brown --- sound/core/control.c | 46 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) (limited to 'sound/core') diff --git a/sound/core/control.c b/sound/core/control.c index 9ce00ed20fba..db51e4e64984 100644 --- a/sound/core/control.c +++ b/sound/core/control.c @@ -465,6 +465,52 @@ error: return ret; } +/** + * snd_ctl_activate_id - activate/inactivate the control of the given id + * @card: the card instance + * @id: the control id to activate/inactivate + * @active: non-zero to activate + * + * Finds the control instance with the given id, and activate or + * inactivate the control together with notification, if changed. + * + * Returns 0 if unchanged, 1 if changed, or a negative error code on failure. + */ +int snd_ctl_activate_id(struct snd_card *card, struct snd_ctl_elem_id *id, + int active) +{ + struct snd_kcontrol *kctl; + struct snd_kcontrol_volatile *vd; + unsigned int index_offset; + int ret; + + down_write(&card->controls_rwsem); + kctl = snd_ctl_find_id(card, id); + if (kctl == NULL) { + ret = -ENOENT; + goto unlock; + } + index_offset = snd_ctl_get_ioff(kctl, &kctl->id); + vd = &kctl->vd[index_offset]; + ret = 0; + if (active) { + if (!(vd->access & SNDRV_CTL_ELEM_ACCESS_INACTIVE)) + goto unlock; + vd->access &= ~SNDRV_CTL_ELEM_ACCESS_INACTIVE; + } else { + if (vd->access & SNDRV_CTL_ELEM_ACCESS_INACTIVE) + goto unlock; + vd->access |= SNDRV_CTL_ELEM_ACCESS_INACTIVE; + } + ret = 1; + unlock: + up_write(&card->controls_rwsem); + if (ret > 0) + snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_INFO, id); + return ret; +} +EXPORT_SYMBOL_GPL(snd_ctl_activate_id); + /** * snd_ctl_rename_id - replace the id of a control on the card * @card: the card instance -- cgit v1.2.2 From 5b7c757d1a8878d49f46c826d6081816935664aa Mon Sep 17 00:00:00 2001 From: Nicolas Kaiser Date: Wed, 16 Mar 2011 17:10:11 +0100 Subject: ALSA: sound/core: merge list_del()/list_add_tail() to list_move_tail() Merge list_del() + list_add_tail() to list_move_tail(). Signed-off-by: Nicolas Kaiser Signed-off-by: Takashi Iwai --- sound/core/timer.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) (limited to 'sound/core') diff --git a/sound/core/timer.c b/sound/core/timer.c index ed016329e911..7c1cbf0a0dc4 100644 --- a/sound/core/timer.c +++ b/sound/core/timer.c @@ -186,9 +186,8 @@ static void snd_timer_check_slave(struct snd_timer_instance *slave) list_for_each_entry(master, &timer->open_list_head, open_list) { if (slave->slave_class == master->slave_class && slave->slave_id == master->slave_id) { - list_del(&slave->open_list); - list_add_tail(&slave->open_list, - &master->slave_list_head); + list_move_tail(&slave->open_list, + &master->slave_list_head); spin_lock_irq(&slave_active_lock); slave->master = master; slave->timer = master->timer; @@ -414,8 +413,7 @@ static void snd_timer_notify1(struct snd_timer_instance *ti, int event) static int snd_timer_start1(struct snd_timer *timer, struct snd_timer_instance *timeri, unsigned long sticks) { - list_del(&timeri->active_list); - list_add_tail(&timeri->active_list, &timer->active_list_head); + list_move_tail(&timeri->active_list, &timer->active_list_head); if (timer->running) { if (timer->hw.flags & SNDRV_TIMER_HW_SLAVE) goto __start_now; -- cgit v1.2.2 From 66b5b9722b8743f83d4c3f11f39665f5f2c40b12 Mon Sep 17 00:00:00 2001 From: Dimitris Papastamos Date: Wed, 16 Mar 2011 12:16:39 +0000 Subject: ALSA: Add snd_ctl_replace() to dynamically replace a control Add a function to dynamically replace a given control. If the control does not already exist, a third parameter is used to determine whether to actually add that control. This is useful in cases where downloadable firmware at runtime can add or replace existing controls. A separate patch needs to be made to allow ALSA Mixer to render the replaced controls on the fly. Signed-off-by: Dimitris Papastamos Signed-off-by: Takashi Iwai --- sound/core/control.c | 64 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 64 insertions(+) (limited to 'sound/core') diff --git a/sound/core/control.c b/sound/core/control.c index a08ad57c49b6..5d98194bcad5 100644 --- a/sound/core/control.c +++ b/sound/core/control.c @@ -365,6 +365,70 @@ int snd_ctl_add(struct snd_card *card, struct snd_kcontrol *kcontrol) EXPORT_SYMBOL(snd_ctl_add); +/** + * snd_ctl_replace - replace the control instance of the card + * @card: the card instance + * @kcontrol: the control instance to replace + * @add_on_replace: add the control if not already added + * + * Replaces the given control. If the given control does not exist + * and the add_on_replace flag is set, the control is added. If the + * control exists, it is destroyed first. + * + * Returns zero if successful, or a negative error code on failure. + * + * It frees automatically the control which cannot be added or replaced. + */ +int snd_ctl_replace(struct snd_card *card, struct snd_kcontrol *kcontrol, + bool add_on_replace) +{ + struct snd_ctl_elem_id id; + unsigned int idx; + struct snd_kcontrol *old; + int ret; + + if (!kcontrol) + return -EINVAL; + if (snd_BUG_ON(!card || !kcontrol->info)) { + ret = -EINVAL; + goto error; + } + id = kcontrol->id; + down_write(&card->controls_rwsem); + old = snd_ctl_find_id(card, &id); + if (!old) { + if (add_on_replace) + goto add; + up_write(&card->controls_rwsem); + ret = -EINVAL; + goto error; + } + ret = snd_ctl_remove(card, old); + if (ret < 0) { + up_write(&card->controls_rwsem); + goto error; + } +add: + if (snd_ctl_find_hole(card, kcontrol->count) < 0) { + up_write(&card->controls_rwsem); + ret = -ENOMEM; + goto error; + } + list_add_tail(&kcontrol->list, &card->controls); + card->controls_count += kcontrol->count; + kcontrol->id.numid = card->last_numid + 1; + card->last_numid += kcontrol->count; + up_write(&card->controls_rwsem); + for (idx = 0; idx < kcontrol->count; idx++, id.index++, id.numid++) + snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_ADD, &id); + return 0; + +error: + snd_ctl_free_one(kcontrol); + return ret; +} +EXPORT_SYMBOL(snd_ctl_replace); + /** * snd_ctl_remove - remove the control from the card and release it * @card: the card instance -- cgit v1.2.2 From 3674f19dabd15f9541079a588149a370d888f4e6 Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Fri, 25 Mar 2011 17:51:54 +1100 Subject: ALSA: vmalloc buffers should use normal mmap It's a big no-no to use pgprot_noncached() when mmap'ing such buffers into userspace since they are mapped cachable in kernel space. This can cause all sort of interesting things ranging from to garbled sound to lockups on various architectures. I've observed that usb-audio is broken on powerpc 4xx for example because of that. Also remove the now unused snd_pcm_lib_mmap_noncached(). It's an arch business to know when to use uncached mappings, there's already hacks for MIPS inside snd_pcm_default_mmap() and other archs are supposed to use dma_mmap_coherent(). (See my separate patch that adds dma_mmap_coherent() to powerpc) Signed-off-by: Benjamin Herrenschmidt CC: Signed-off-by: Takashi Iwai --- sound/core/pcm_native.c | 9 --------- 1 file changed, 9 deletions(-) (limited to 'sound/core') diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c index ae42b6509ce4..fe5c8036beba 100644 --- a/sound/core/pcm_native.c +++ b/sound/core/pcm_native.c @@ -3201,15 +3201,6 @@ int snd_pcm_lib_mmap_iomem(struct snd_pcm_substream *substream, EXPORT_SYMBOL(snd_pcm_lib_mmap_iomem); #endif /* SNDRV_PCM_INFO_MMAP */ -/* mmap callback with pgprot_noncached */ -int snd_pcm_lib_mmap_noncached(struct snd_pcm_substream *substream, - struct vm_area_struct *area) -{ - area->vm_page_prot = pgprot_noncached(area->vm_page_prot); - return snd_pcm_default_mmap(substream, area); -} -EXPORT_SYMBOL(snd_pcm_lib_mmap_noncached); - /* * mmap DMA buffer */ -- cgit v1.2.2 From a45e3d6b13e97506b616980c0f122c3389bcefa4 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Thu, 24 Mar 2011 09:50:15 +0100 Subject: ALSA: Fix yet another race in disconnection This patch fixes a race between snd_card_file_remove() and snd_card_disconnect(). When the card is added to shutdown_files list in snd_card_disconnect(), but it's freed in snd_card_file_remove() at the same time, the shutdown_files list gets corrupted. The list member must be freed in snd_card_file_remove() as well. Reported-and-tested-by: Russ Dill Cc: Signed-off-by: Takashi Iwai --- sound/core/init.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'sound/core') diff --git a/sound/core/init.c b/sound/core/init.c index 3e65da21a08c..a0080aa45ae9 100644 --- a/sound/core/init.c +++ b/sound/core/init.c @@ -848,6 +848,7 @@ int snd_card_file_add(struct snd_card *card, struct file *file) return -ENOMEM; mfile->file = file; mfile->disconnected_f_op = NULL; + INIT_LIST_HEAD(&mfile->shutdown_list); spin_lock(&card->files_lock); if (card->shutdown) { spin_unlock(&card->files_lock); @@ -883,6 +884,9 @@ int snd_card_file_remove(struct snd_card *card, struct file *file) list_for_each_entry(mfile, &card->files_list, list) { if (mfile->file == file) { list_del(&mfile->list); + spin_lock(&shutdown_lock); + list_del(&mfile->shutdown_list); + spin_unlock(&shutdown_lock); if (mfile->disconnected_f_op) fops_put(mfile->disconnected_f_op); found = mfile; -- cgit v1.2.2 From 25985edcedea6396277003854657b5f3cb31a628 Mon Sep 17 00:00:00 2001 From: Lucas De Marchi Date: Wed, 30 Mar 2011 22:57:33 -0300 Subject: Fix common misspellings Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi --- sound/core/pcm_memory.c | 6 +++--- sound/core/pcm_native.c | 2 +- sound/core/seq/seq_dummy.c | 2 +- sound/core/vmaster.c | 2 +- 4 files changed, 6 insertions(+), 6 deletions(-) (limited to 'sound/core') diff --git a/sound/core/pcm_memory.c b/sound/core/pcm_memory.c index 917e4055ee30..150cb7edffee 100644 --- a/sound/core/pcm_memory.c +++ b/sound/core/pcm_memory.c @@ -253,7 +253,7 @@ static int snd_pcm_lib_preallocate_pages1(struct snd_pcm_substream *substream, * snd_pcm_lib_preallocate_pages - pre-allocation for the given DMA type * @substream: the pcm substream instance * @type: DMA type (SNDRV_DMA_TYPE_*) - * @data: DMA type dependant data + * @data: DMA type dependent data * @size: the requested pre-allocation size in bytes * @max: the max. allowed pre-allocation size * @@ -278,10 +278,10 @@ int snd_pcm_lib_preallocate_pages(struct snd_pcm_substream *substream, EXPORT_SYMBOL(snd_pcm_lib_preallocate_pages); /** - * snd_pcm_lib_preallocate_pages_for_all - pre-allocation for continous memory type (all substreams) + * snd_pcm_lib_preallocate_pages_for_all - pre-allocation for continuous memory type (all substreams) * @pcm: the pcm instance * @type: DMA type (SNDRV_DMA_TYPE_*) - * @data: DMA type dependant data + * @data: DMA type dependent data * @size: the requested pre-allocation size in bytes * @max: the max. allowed pre-allocation size * diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c index fe5c8036beba..1a07750f3836 100644 --- a/sound/core/pcm_native.c +++ b/sound/core/pcm_native.c @@ -460,7 +460,7 @@ static int snd_pcm_hw_params(struct snd_pcm_substream *substream, PM_QOS_CPU_DMA_LATENCY, usecs); return 0; _error: - /* hardware might be unuseable from this time, + /* hardware might be unusable from this time, so we force application to retry to set the correct hardware parameter settings */ runtime->status->state = SNDRV_PCM_STATE_OPEN; diff --git a/sound/core/seq/seq_dummy.c b/sound/core/seq/seq_dummy.c index f3bdc54b429a..1d7d90ca455e 100644 --- a/sound/core/seq/seq_dummy.c +++ b/sound/core/seq/seq_dummy.c @@ -50,7 +50,7 @@ option snd-seq-dummy ports=4 - The modle option "duplex=1" enables duplex operation to the port. + The model option "duplex=1" enables duplex operation to the port. In duplex mode, a pair of ports are created instead of single port, and events are tunneled between pair-ports. For example, input to port A is sent to output port of another port B and vice versa. diff --git a/sound/core/vmaster.c b/sound/core/vmaster.c index a89948ae9e8d..a39d3d8c2f9c 100644 --- a/sound/core/vmaster.c +++ b/sound/core/vmaster.c @@ -233,7 +233,7 @@ static void slave_free(struct snd_kcontrol *kcontrol) * Add a slave control to the group with the given master control * * All slaves must be the same type (returning the same information - * via info callback). The fucntion doesn't check it, so it's your + * via info callback). The function doesn't check it, so it's your * responsibility. * * Also, some additional limitations: -- cgit v1.2.2 From 12ff414e2e4512f59fe191dc18e856e2939a1c79 Mon Sep 17 00:00:00 2001 From: Kelly Anderson Date: Fri, 1 Apr 2011 11:58:25 +0200 Subject: ALSA: pcm: fix infinite loop in snd_pcm_update_hw_ptr0() When period interrupts are disabled, snd_pcm_update_hw_ptr0() compares the current time against the time estimated for the current hardware pointer to detect xruns. The somewhat fuzzy threshold in the while loop makes it possible that hdelta becomes negative; the comparison being done with unsigned types then makes the loop go through the entire 263 negative range, and, depending on the value, never reach an unsigned value that is small enough to stop the loop. Doing this with interrupts disabled results in the machine locking up. To prevent this, ensure that the loop condition uses signed types for both operands so that the comparison is correctly done. Many thanks to Kelly Anderson for debugging this. Reported-by: Nix Reported-by: "Christopher K." Reported-and-tested-by: Kelly Anderson Signed-off-by: Kelly Anderson [cl: remove unneeded casts; use a temp variable] Signed-off-by: Clemens Ladisch Cc: 2.6.38 Signed-off-by: Takashi Iwai --- sound/core/pcm_lib.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'sound/core') diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c index a82e3756a72d..64449cb8f873 100644 --- a/sound/core/pcm_lib.c +++ b/sound/core/pcm_lib.c @@ -375,6 +375,7 @@ static int snd_pcm_update_hw_ptr0(struct snd_pcm_substream *substream, } if (runtime->no_period_wakeup) { + snd_pcm_sframes_t xrun_threshold; /* * Without regular period interrupts, we have to check * the elapsed time to detect xruns. @@ -383,7 +384,8 @@ static int snd_pcm_update_hw_ptr0(struct snd_pcm_substream *substream, if (jdelta < runtime->hw_ptr_buffer_jiffies / 2) goto no_delta_check; hdelta = jdelta - delta * HZ / runtime->rate; - while (hdelta > runtime->hw_ptr_buffer_jiffies / 2 + 1) { + xrun_threshold = runtime->hw_ptr_buffer_jiffies / 2 + 1; + while (hdelta > xrun_threshold) { delta += runtime->buffer_size; hw_base += runtime->buffer_size; if (hw_base >= runtime->boundary) -- cgit v1.2.2 From d8e4f9aed82c68b60f81b2e7977c46868d51062f Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Mon, 4 Apr 2011 12:43:23 +0200 Subject: ALSA: core - Don't use "default' for default The card-id parser assigns the string "default" when no appropriate word is found in the card name. But this string may confuse the alsa-lib, so better to avoid. Use "Default" now instead. Signed-off-by: Takashi Iwai --- sound/core/init.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'sound/core') diff --git a/sound/core/init.c b/sound/core/init.c index a0080aa45ae9..30ecad41403c 100644 --- a/sound/core/init.c +++ b/sound/core/init.c @@ -514,7 +514,7 @@ static void snd_card_set_id_no_lock(struct snd_card *card, const char *nid) id = card->id; if (*id == '\0') - strcpy(id, "default"); + strcpy(id, "Default"); while (1) { if (loops-- == 0) { -- cgit v1.2.2 From ec08b14483de0702ca43e3a8506e149486975f9b Mon Sep 17 00:00:00 2001 From: Ben Gardiner Date: Wed, 18 May 2011 10:03:34 -0400 Subject: ALSA: sound, core, pcm_lib: xrun_log: log also in_interrupt When debugging pcm drivers I found the "period" or "hw" prefix printed by either XRUN_DEBUG_PERIODUPDATE or XRUN_DEBUG_PERIODUPDATE events, respectively to be very useful is observing the interplay between interrupt-context updates and syscall-context updates. Similarly, when debugging overruns with XRUN_DEBUG_LOG it is useful to see the context of the last 10 positions. Add an in_interrupt member to hwptr_log_entry which stores the value of the in_interrupt parameter of snd_pcm_update_hw_ptr0 when the log entry is created. Print a "[Q]" prefix when dumping the log entries if in_interrupt was true. Signed-off-by: Ben Gardiner Signed-off-by: Takashi Iwai --- sound/core/pcm_lib.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) (limited to 'sound/core') diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c index 64449cb8f873..c8c8091f9a71 100644 --- a/sound/core/pcm_lib.c +++ b/sound/core/pcm_lib.c @@ -189,6 +189,7 @@ static void xrun(struct snd_pcm_substream *substream) #define XRUN_LOG_CNT 10 struct hwptr_log_entry { + unsigned int in_interrupt; unsigned long jiffies; snd_pcm_uframes_t pos; snd_pcm_uframes_t period_size; @@ -204,7 +205,7 @@ struct snd_pcm_hwptr_log { }; static void xrun_log(struct snd_pcm_substream *substream, - snd_pcm_uframes_t pos) + snd_pcm_uframes_t pos, int in_interrupt) { struct snd_pcm_runtime *runtime = substream->runtime; struct snd_pcm_hwptr_log *log = runtime->hwptr_log; @@ -220,6 +221,7 @@ static void xrun_log(struct snd_pcm_substream *substream, return; } entry = &log->entries[log->idx]; + entry->in_interrupt = in_interrupt; entry->jiffies = jiffies; entry->pos = pos; entry->period_size = runtime->period_size; @@ -246,9 +248,11 @@ static void xrun_log_show(struct snd_pcm_substream *substream) entry = &log->entries[idx]; if (entry->period_size == 0) break; - snd_printd("hwptr log: %s: j=%lu, pos=%ld/%ld/%ld, " + snd_printd("hwptr log: %s: %sj=%lu, pos=%ld/%ld/%ld, " "hwptr=%ld/%ld\n", - name, entry->jiffies, (unsigned long)entry->pos, + name, entry->in_interrupt ? "[Q] " : "", + entry->jiffies, + (unsigned long)entry->pos, (unsigned long)entry->period_size, (unsigned long)entry->buffer_size, (unsigned long)entry->old_hw_ptr, @@ -326,7 +330,7 @@ static int snd_pcm_update_hw_ptr0(struct snd_pcm_substream *substream, } pos -= pos % runtime->min_align; if (xrun_debug(substream, XRUN_DEBUG_LOG)) - xrun_log(substream, pos); + xrun_log(substream, pos, in_interrupt); hw_base = runtime->hw_ptr_base; new_hw_ptr = hw_base + pos; if (in_interrupt) { -- cgit v1.2.2 From 217658f46c2dbfe260f8f5976f2a201911a2f4c6 Mon Sep 17 00:00:00 2001 From: Ben Gardiner Date: Wed, 18 May 2011 23:52:38 -0400 Subject: ALSA: sound, core, pcm_lib: fix xrun_log The xrun_log function was augmented with the in_interrupt parameter whereas the empty macro definition used when xrun logging is disabled was not. Add a third parameter to the empty macro definition so as to not cause compiler errors when xrun logging (CONFIG_SND_PCM_XRUN_DEBUG) is disabled. Signed-off-by: Ben Gardiner Signed-off-by: Takashi Iwai --- sound/core/pcm_lib.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'sound/core') diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c index c8c8091f9a71..abfeff1611ce 100644 --- a/sound/core/pcm_lib.c +++ b/sound/core/pcm_lib.c @@ -266,7 +266,7 @@ static void xrun_log_show(struct snd_pcm_substream *substream) #else /* ! CONFIG_SND_PCM_XRUN_DEBUG */ #define hw_ptr_error(substream, fmt, args...) do { } while (0) -#define xrun_log(substream, pos) do { } while (0) +#define xrun_log(substream, pos, in_interrupt) do { } while (0) #define xrun_log_show(substream) do { } while (0) #endif -- cgit v1.2.2 From f2b3614cefb61ee6046a0aaee503ee37f227d310 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Thu, 26 May 2011 08:09:38 +0200 Subject: ALSA: PCM - Don't check DMA time-out too shortly When the PCM period size is set larger than 10 seconds, currently the PCM core may abort the operation with DMA-error due to the fixed timeout for 10 seconds. A similar problem is seen in the drain operation that has a fixed timeout of 10 seconds, too. This patch fixes the timeout length depending on the period size and rate, also including the consideration of no_period_wakeup flag. Reported-by: Raymond Yau Signed-off-by: Takashi Iwai --- sound/core/pcm_lib.c | 17 +++++++++++++---- sound/core/pcm_native.c | 13 +++++++++++-- 2 files changed, 24 insertions(+), 6 deletions(-) (limited to 'sound/core') diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c index abfeff1611ce..f1341308beda 100644 --- a/sound/core/pcm_lib.c +++ b/sound/core/pcm_lib.c @@ -1756,8 +1756,18 @@ static int wait_for_avail(struct snd_pcm_substream *substream, wait_queue_t wait; int err = 0; snd_pcm_uframes_t avail = 0; - long tout; - + long wait_time, tout; + + if (runtime->no_period_wakeup) + wait_time = MAX_SCHEDULE_TIMEOUT; + else { + wait_time = 10; + if (runtime->rate) { + long t = runtime->period_size * 2 / runtime->rate; + wait_time = max(t, wait_time); + } + wait_time = msecs_to_jiffies(wait_time * 1000); + } init_waitqueue_entry(&wait, current); add_wait_queue(&runtime->tsleep, &wait); for (;;) { @@ -1765,9 +1775,8 @@ static int wait_for_avail(struct snd_pcm_substream *substream, err = -ERESTARTSYS; break; } - set_current_state(TASK_INTERRUPTIBLE); snd_pcm_stream_unlock_irq(substream); - tout = schedule_timeout(msecs_to_jiffies(10000)); + tout = schedule_timeout_interruptible(wait_time); snd_pcm_stream_lock_irq(substream); switch (runtime->status->state) { case SNDRV_PCM_STATE_SUSPENDED: diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c index 1a07750f3836..b597408d5faa 100644 --- a/sound/core/pcm_native.c +++ b/sound/core/pcm_native.c @@ -1481,11 +1481,20 @@ static int snd_pcm_drain(struct snd_pcm_substream *substream, break; /* all drained */ init_waitqueue_entry(&wait, current); add_wait_queue(&to_check->sleep, &wait); - set_current_state(TASK_INTERRUPTIBLE); snd_pcm_stream_unlock_irq(substream); up_read(&snd_pcm_link_rwsem); snd_power_unlock(card); - tout = schedule_timeout(10 * HZ); + if (runtime->no_period_wakeup) + tout = MAX_SCHEDULE_TIMEOUT; + else { + tout = 10; + if (runtime->rate) { + long t = runtime->period_size * 2 / runtime->rate; + tout = max(t, tout); + } + tout = msecs_to_jiffies(tout * 1000); + } + tout = schedule_timeout_interruptible(tout); snd_power_lock(card); down_read(&snd_pcm_link_rwsem); snd_pcm_stream_lock_irq(substream); -- cgit v1.2.2 From 78fa2c4d2465d014e67d3e12d948425856587251 Mon Sep 17 00:00:00 2001 From: Luca Tettamanti Date: Wed, 25 May 2011 22:43:27 +0200 Subject: ALSA: core: remove unused variables. Drop a few variables that are never read. Signed-off-by: Luca Tettamanti Signed-off-by: Takashi Iwai --- sound/core/control.c | 3 +-- sound/core/init.c | 3 --- sound/core/oss/linear.c | 3 --- sound/core/pcm_native.c | 8 -------- sound/core/seq/seq_queue.c | 2 -- 5 files changed, 1 insertion(+), 18 deletions(-) (limited to 'sound/core') diff --git a/sound/core/control.c b/sound/core/control.c index 5d98194bcad5..f8c5be464510 100644 --- a/sound/core/control.c +++ b/sound/core/control.c @@ -704,13 +704,12 @@ static int snd_ctl_elem_list(struct snd_card *card, struct snd_ctl_elem_list list; struct snd_kcontrol *kctl; struct snd_ctl_elem_id *dst, *id; - unsigned int offset, space, first, jidx; + unsigned int offset, space, jidx; if (copy_from_user(&list, _list, sizeof(list))) return -EFAULT; offset = list.offset; space = list.space; - first = 0; /* try limit maximum space */ if (space > 16384) return -ENOMEM; diff --git a/sound/core/init.c b/sound/core/init.c index 30ecad41403c..2c041bb36ab3 100644 --- a/sound/core/init.c +++ b/sound/core/init.c @@ -342,7 +342,6 @@ static const struct file_operations snd_shutdown_f_ops = int snd_card_disconnect(struct snd_card *card) { struct snd_monitor_file *mfile; - struct file *file; int err; if (!card) @@ -366,8 +365,6 @@ int snd_card_disconnect(struct snd_card *card) spin_lock(&card->files_lock); list_for_each_entry(mfile, &card->files_list, list) { - file = mfile->file; - /* it's critical part, use endless loop */ /* we have no room to fail */ mfile->disconnected_f_op = mfile->file->f_op; diff --git a/sound/core/oss/linear.c b/sound/core/oss/linear.c index 13b3f6f49fae..2045697f449d 100644 --- a/sound/core/oss/linear.c +++ b/sound/core/oss/linear.c @@ -90,11 +90,8 @@ static snd_pcm_sframes_t linear_transfer(struct snd_pcm_plugin *plugin, struct snd_pcm_plugin_channel *dst_channels, snd_pcm_uframes_t frames) { - struct linear_priv *data; - if (snd_BUG_ON(!plugin || !src_channels || !dst_channels)) return -ENXIO; - data = (struct linear_priv *)plugin->extra_data; if (frames == 0) return 0; #ifdef CONFIG_SND_DEBUG diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c index b597408d5faa..1c6be91dfb98 100644 --- a/sound/core/pcm_native.c +++ b/sound/core/pcm_native.c @@ -1527,13 +1527,11 @@ static int snd_pcm_drain(struct snd_pcm_substream *substream, static int snd_pcm_drop(struct snd_pcm_substream *substream) { struct snd_pcm_runtime *runtime; - struct snd_card *card; int result = 0; if (PCM_RUNTIME_CHECK(substream)) return -ENXIO; runtime = substream->runtime; - card = substream->pcm->card; if (runtime->status->state == SNDRV_PCM_STATE_OPEN || runtime->status->state == SNDRV_PCM_STATE_DISCONNECTED || @@ -2065,7 +2063,6 @@ static int snd_pcm_open_file(struct file *file, { struct snd_pcm_file *pcm_file; struct snd_pcm_substream *substream; - struct snd_pcm_str *str; int err; if (rpcm_file) @@ -2082,7 +2079,6 @@ static int snd_pcm_open_file(struct file *file, } pcm_file->substream = substream; if (substream->ref_count == 1) { - str = substream->pstr; substream->file = pcm_file; substream->pcm_release = pcm_release_private; } @@ -3024,11 +3020,9 @@ static const struct vm_operations_struct snd_pcm_vm_ops_status = static int snd_pcm_mmap_status(struct snd_pcm_substream *substream, struct file *file, struct vm_area_struct *area) { - struct snd_pcm_runtime *runtime; long size; if (!(area->vm_flags & VM_READ)) return -EINVAL; - runtime = substream->runtime; size = area->vm_end - area->vm_start; if (size != PAGE_ALIGN(sizeof(struct snd_pcm_mmap_status))) return -EINVAL; @@ -3063,11 +3057,9 @@ static const struct vm_operations_struct snd_pcm_vm_ops_control = static int snd_pcm_mmap_control(struct snd_pcm_substream *substream, struct file *file, struct vm_area_struct *area) { - struct snd_pcm_runtime *runtime; long size; if (!(area->vm_flags & VM_READ)) return -EINVAL; - runtime = substream->runtime; size = area->vm_end - area->vm_start; if (size != PAGE_ALIGN(sizeof(struct snd_pcm_mmap_control))) return -EINVAL; diff --git a/sound/core/seq/seq_queue.c b/sound/core/seq/seq_queue.c index e7a8e9e4edb2..f9077361c119 100644 --- a/sound/core/seq/seq_queue.c +++ b/sound/core/seq/seq_queue.c @@ -467,13 +467,11 @@ int snd_seq_queue_timer_open(int queueid) int snd_seq_queue_timer_close(int queueid) { struct snd_seq_queue *queue; - struct snd_seq_timer *tmr; int result = 0; queue = queueptr(queueid); if (queue == NULL) return -EINVAL; - tmr = queue->timer; snd_seq_timer_close(queue); queuefree(queue); return result; -- cgit v1.2.2 From 890ee02ac12c02c4712b6d7dd062ff4d6d37691c Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Fri, 10 Jun 2011 15:32:31 +0200 Subject: ALSA: Use %pV for snd_printk() Clean up snd_printk() helper using the %pV prefix for recursive printks. This also automagically fixes an Oops with RO/NX-enabled modules. Tested-by: Maarten Lankhorst Signed-off-by: Takashi Iwai --- sound/core/misc.c | 40 +++++++++++++++++----------------------- 1 file changed, 17 insertions(+), 23 deletions(-) (limited to 'sound/core') diff --git a/sound/core/misc.c b/sound/core/misc.c index 2c41825c836e..eb9fe2e1d291 100644 --- a/sound/core/misc.c +++ b/sound/core/misc.c @@ -58,26 +58,6 @@ static const char *sanity_file_name(const char *path) else return path; } - -/* print file and line with a certain printk prefix */ -static int print_snd_pfx(unsigned int level, const char *path, int line, - const char *format) -{ - const char *file = sanity_file_name(path); - char tmp[] = "<0>"; - const char *pfx = level ? KERN_DEBUG : KERN_DEFAULT; - int ret = 0; - - if (format[0] == '<' && format[2] == '>') { - tmp[1] = format[1]; - pfx = tmp; - ret = 1; - } - printk("%sALSA %s:%d: ", pfx, file, line); - return ret; -} -#else -#define print_snd_pfx(level, path, line, format) 0 #endif #if defined(CONFIG_SND_DEBUG) || defined(CONFIG_SND_VERBOSE_PRINTK) @@ -85,15 +65,29 @@ void __snd_printk(unsigned int level, const char *path, int line, const char *format, ...) { va_list args; - +#ifdef CONFIG_SND_VERBOSE_PRINTK + struct va_format vaf; + char verbose_fmt[] = KERN_DEFAULT "ALSA %s:%d %pV"; +#endif + #ifdef CONFIG_SND_DEBUG if (debug < level) return; #endif + va_start(args, format); - if (print_snd_pfx(level, path, line, format)) - format += 3; /* skip the printk level-prefix */ +#ifdef CONFIG_SND_VERBOSE_PRINTK + vaf.fmt = format; + vaf.va = &args; + if (format[0] == '<' && format[2] == '>') { + memcpy(verbose_fmt, format, 3); + vaf.fmt = format + 3; + } else if (level) + memcpy(verbose_fmt, KERN_DEBUG, 3); + printk(verbose_fmt, sanity_file_name(path), line, &vaf); +#else vprintk(format, args); +#endif va_end(args); } EXPORT_SYMBOL_GPL(__snd_printk); -- cgit v1.2.2