6 files changed, 92 insertions, 37 deletions

diff --git a/sound/core/control.c b/sound/core/control.c
index a8b7fabe645e..268ab7471224 100644
--- a/sound/core/control.c
+++ b/sound/core/control.c
@@ -75,7 +75,7 @@ static int snd_ctl_open(struct inode *inode, struct file *file)
         ctl->card = card;
         ctl->prefer_pcm_subdevice = -1;
         ctl->prefer_rawmidi_subdevice = -1;
-        ctl->pid = current->pid;
+        ctl->pid = get_pid(task_pid(current));
         file->private_data = ctl;
         write_lock_irqsave(&card->ctl_files_rwlock, flags);
         list_add_tail(&ctl->list, &card->ctl_files);
@@ -125,6 +125,7 @@ static int snd_ctl_release(struct inode *inode, struct file *file)
                                 control->vd[idx].owner = NULL;
         up_write(&card->controls_rwsem);
         snd_ctl_empty_read_queue(ctl);
+        put_pid(ctl->pid);
         kfree(ctl);
         module_put(card->module);
         snd_card_file_remove(card, file);
@@ -672,7 +673,7 @@ static int snd_ctl_elem_info(struct snd_ctl_file *ctl,
                         info->access |= SNDRV_CTL_ELEM_ACCESS_LOCK;
                         if (vd->owner == ctl)
                                 info->access |= SNDRV_CTL_ELEM_ACCESS_OWNER;
-                        info->owner = vd->owner_pid;
+                        info->owner = pid_vnr(vd->owner->pid);
                 } else {
                         info->owner = -1;
                 }
@@ -827,7 +828,6 @@ static int snd_ctl_elem_lock(struct snd_ctl_file *file,
                         result = -EBUSY;
                 else {
                         vd->owner = file;
-                        vd->owner_pid = current->pid;
                         result = 0;
                 }
         }
@@ -858,7 +858,6 @@ static int snd_ctl_elem_unlock(struct snd_ctl_file *file,
                         result = -EPERM;
                 else {
                         vd->owner = NULL;
-                        vd->owner_pid = 0;
                         result = 0;
                 }
         }
@@ -1120,7 +1119,7 @@ static int snd_ctl_tlv_ioctl(struct snd_ctl_file *file,
                 goto __kctl_end;
         }
         if (vd->access & SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK) {
-                if (file && vd->owner != NULL && vd->owner != file) {
+                if (vd->owner != NULL && vd->owner != file) {
                         err = -EPERM;
                         goto __kctl_end;
                 }
diff --git a/sound/core/isadma.c b/sound/core/isadma.c
index 79f0f16af339..950e19ba91fc 100644
--- a/sound/core/isadma.c
+++ b/sound/core/isadma.c
@@ -85,16 +85,24 @@ EXPORT_SYMBOL(snd_dma_disable);
 unsigned int snd_dma_pointer(unsigned long dma, unsigned int size)
 {
         unsigned long flags;
-        unsigned int result;
+        unsigned int result, result1;
 
         flags = claim_dma_lock();
         clear_dma_ff(dma);
         if (!isa_dma_bridge_buggy)
                 disable_dma(dma);
         result = get_dma_residue(dma);
+        /*
+         * HACK - read the counter again and choose higher value in order to
+         * avoid reading during counter lower byte roll over if the
+         * isa_dma_bridge_buggy is set.
+         */
+        result1 = get_dma_residue(dma);
         if (!isa_dma_bridge_buggy)
                 enable_dma(dma);
         release_dma_lock(flags);
+        if (unlikely(result < result1))
+                result = result1;
 #ifdef CONFIG_SND_DEBUG
         if (result > size)
                 snd_printk(KERN_ERR "pointer (0x%x) for DMA #%ld is greater than transfer size (0x%x)\n", result, dma, size);
diff --git a/sound/core/oss/mixer_oss.c b/sound/core/oss/mixer_oss.c
index 772423889eb3..54e2eb56e4c2 100644
--- a/sound/core/oss/mixer_oss.c
+++ b/sound/core/oss/mixer_oss.c
@@ -1251,7 +1251,9 @@ static void snd_mixer_oss_build(struct snd_mixer_oss *mixer)
                 { SOUND_MIXER_SYNTH,    "FM",                   0 }, /* fallback */
                 { SOUND_MIXER_SYNTH,    "Music",                0 }, /* fallback */
                 { SOUND_MIXER_PCM,      "PCM",                  0 },
-                { SOUND_MIXER_SPEAKER,  "PC Speaker",           0 },
+                { SOUND_MIXER_SPEAKER,  "Beep",                 0 },
+                { SOUND_MIXER_SPEAKER,  "PC Speaker",           0 }, /* fallback */
+                { SOUND_MIXER_SPEAKER,  "Speaker",              0 }, /* fallback */
                 { SOUND_MIXER_LINE,     "Line",                 0 },
                 { SOUND_MIXER_MIC,      "Mic",                  0 },
                 { SOUND_MIXER_CD,       "CD",                   0 },
diff --git a/sound/core/pcm.c b/sound/core/pcm.c
index c69c60b2a48a..6884ae031f6f 100644
--- a/sound/core/pcm.c
+++ b/sound/core/pcm.c
@@ -435,6 +435,7 @@ static void snd_pcm_substream_proc_status_read(struct snd_info_entry *entry,
                 return;
         }
         snd_iprintf(buffer, "state: %s\n", snd_pcm_state_name(status.state));
+        snd_iprintf(buffer, "owner_pid   : %d\n", pid_vnr(substream->pid));
         snd_iprintf(buffer, "trigger_time: %ld.%09ld\n",
                 status.trigger_tstamp.tv_sec, status.trigger_tstamp.tv_nsec);
         snd_iprintf(buffer, "tstamp      : %ld.%09ld\n",
@@ -809,7 +810,7 @@ int snd_pcm_attach_substream(struct snd_pcm *pcm, int stream,
         card = pcm->card;
         read_lock(&card->ctl_files_rwlock);
         list_for_each_entry(kctl, &card->ctl_files, list) {
-                if (kctl->pid == current->pid) {
+                if (kctl->pid == task_pid(current)) {
                         prefer_subdevice = kctl->prefer_pcm_subdevice;
                         if (prefer_subdevice != -1)
                                 break;
@@ -900,6 +901,7 @@ int snd_pcm_attach_substream(struct snd_pcm *pcm, int stream,
         substream->private_data = pcm->private_data;
         substream->ref_count = 1;
         substream->f_flags = file->f_flags;
+        substream->pid = get_pid(task_pid(current));
         pstr->substream_opened++;
         *rsubstream = substream;
         return 0;
@@ -921,6 +923,8 @@ void snd_pcm_detach_substream(struct snd_pcm_substream *substream)
         kfree(runtime->hw_constraints.rules);
         kfree(runtime);
         substream->runtime = NULL;
+        put_pid(substream->pid);
+        substream->pid = NULL;
         substream->pstr->substream_opened--;
 }
 
diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c
index ab73edf2c89a..29ab46a12e11 100644
--- a/sound/core/pcm_native.c
+++ b/sound/core/pcm_native.c
@@ -26,6 +26,7 @@
 #include <linux/time.h>
 #include <linux/pm_qos_params.h>
 #include <linux/uio.h>
+#include <linux/dma-mapping.h>
 #include <sound/core.h>
 #include <sound/control.h>
 #include <sound/info.h>
@@ -3061,6 +3062,27 @@ static int snd_pcm_mmap_control(struct snd_pcm_substream *substream, struct file
 }
 #endif /* coherent mmap */
 
+static inline struct page *
+snd_pcm_default_page_ops(struct snd_pcm_substream *substream, unsigned long ofs)
+{
+        void *vaddr = substream->runtime->dma_area + ofs;
+#if defined(CONFIG_MIPS) && defined(CONFIG_DMA_NONCOHERENT)
+        if (substream->dma_buffer.dev.type == SNDRV_DMA_TYPE_DEV)
+                return virt_to_page(CAC_ADDR(vaddr));
+#endif
+#if defined(CONFIG_PPC32) && defined(CONFIG_NOT_COHERENT_CACHE)
+        if (substream->dma_buffer.dev.type == SNDRV_DMA_TYPE_DEV) {
+                dma_addr_t addr = substream->runtime->dma_addr + ofs;
+                addr -= get_dma_offset(substream->dma_buffer.dev.dev);
+                /* assume dma_handle set via pfn_to_phys() in
+                 * mm/dma-noncoherent.c
+                 */
+                return pfn_to_page(addr >> PAGE_SHIFT);
+        }
+#endif
+        return virt_to_page(vaddr);
+}
+
 /*
  * fault callback for mmapping a RAM page
  */
@@ -3071,7 +3093,6 @@ static int snd_pcm_mmap_data_fault(struct vm_area_struct *area,
         struct snd_pcm_runtime *runtime;
         unsigned long offset;
         struct page * page;
-        void *vaddr;
         size_t dma_bytes;
         
         if (substream == NULL)
@@ -3081,36 +3102,53 @@ static int snd_pcm_mmap_data_fault(struct vm_area_struct *area,
         dma_bytes = PAGE_ALIGN(runtime->dma_bytes);
         if (offset > dma_bytes - PAGE_SIZE)
                 return VM_FAULT_SIGBUS;
-        if (substream->ops->page) {
+        if (substream->ops->page)
                 page = substream->ops->page(substream, offset);
-                if (!page)
-                        return VM_FAULT_SIGBUS;
-        } else {
-                vaddr = runtime->dma_area + offset;
-                page = virt_to_page(vaddr);
-        }
+        else
+                page = snd_pcm_default_page_ops(substream, offset);
+        if (!page)
+                return VM_FAULT_SIGBUS;
         get_page(page);
         vmf->page = page;
         return 0;
 }
 
-static const struct vm_operations_struct snd_pcm_vm_ops_data =
-{
+static const struct vm_operations_struct snd_pcm_vm_ops_data = {
+        .open =         snd_pcm_mmap_data_open,
+        .close =        snd_pcm_mmap_data_close,
+};
+
+static const struct vm_operations_struct snd_pcm_vm_ops_data_fault = {
         .open =         snd_pcm_mmap_data_open,
         .close =        snd_pcm_mmap_data_close,
         .fault =        snd_pcm_mmap_data_fault,
 };
 
+#ifndef ARCH_HAS_DMA_MMAP_COHERENT
+/* This should be defined / handled globally! */
+#ifdef CONFIG_ARM
+#define ARCH_HAS_DMA_MMAP_COHERENT
+#endif
+#endif
+
 /*
  * mmap the DMA buffer on RAM
  */
 static int snd_pcm_default_mmap(struct snd_pcm_substream *substream,
                                 struct vm_area_struct *area)
 {
-        area->vm_ops = &snd_pcm_vm_ops_data;
-        area->vm_private_data = substream;
         area->vm_flags |= VM_RESERVED;
-        atomic_inc(&substream->mmap_count);
+#ifdef ARCH_HAS_DMA_MMAP_COHERENT
+        if (!substream->ops->page &&
+            substream->dma_buffer.dev.type == SNDRV_DMA_TYPE_DEV)
+                return dma_mmap_coherent(substream->dma_buffer.dev.dev,
+                                         area,
+                                         substream->runtime->dma_area,
+                                         substream->runtime->dma_addr,
+                                         area->vm_end - area->vm_start);
+#endif /* ARCH_HAS_DMA_MMAP_COHERENT */
+        /* mmap with fault handler */
+        area->vm_ops = &snd_pcm_vm_ops_data_fault;
         return 0;
 }
 
@@ -3118,12 +3156,6 @@ static int snd_pcm_default_mmap(struct snd_pcm_substream *substream,
  * mmap the DMA buffer on I/O memory area
  */
 #if SNDRV_PCM_INFO_MMAP_IOMEM
-static const struct vm_operations_struct snd_pcm_vm_ops_data_mmio =
-{
-        .open =         snd_pcm_mmap_data_open,
-        .close =        snd_pcm_mmap_data_close,
-};
-
 int snd_pcm_lib_mmap_iomem(struct snd_pcm_substream *substream,
                            struct vm_area_struct *area)
 {
@@ -3133,8 +3165,6 @@ int snd_pcm_lib_mmap_iomem(struct snd_pcm_substream *substream,
 #ifdef pgprot_noncached
         area->vm_page_prot = pgprot_noncached(area->vm_page_prot);
 #endif
-        area->vm_ops = &snd_pcm_vm_ops_data_mmio;
-        area->vm_private_data = substream;
         area->vm_flags |= VM_IO;
         size = area->vm_end - area->vm_start;
         offset = area->vm_pgoff << PAGE_SHIFT;
@@ -3142,7 +3172,6 @@ int snd_pcm_lib_mmap_iomem(struct snd_pcm_substream *substream,
                                 (substream->runtime->dma_addr + offset) >> PAGE_SHIFT,
                                 size, area->vm_page_prot))
                 return -EAGAIN;
-        atomic_inc(&substream->mmap_count);
         return 0;
 }
 
@@ -3159,6 +3188,7 @@ int snd_pcm_mmap_data(struct snd_pcm_substream *substream, struct file *file,
         long size;
         unsigned long offset;
         size_t dma_bytes;
+        int err;
 
         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
                 if (!(area->vm_flags & (VM_WRITE|VM_READ)))
@@ -3183,10 +3213,15 @@ int snd_pcm_mmap_data(struct snd_pcm_substream *substream, struct file *file,
         if (offset > dma_bytes - size)
                 return -EINVAL;
 
+        area->vm_ops = &snd_pcm_vm_ops_data;
+        area->vm_private_data = substream;
         if (substream->ops->mmap)
-                return substream->ops->mmap(substream, area);
+                err = substream->ops->mmap(substream, area);
         else
-                return snd_pcm_default_mmap(substream, area);
+                err = snd_pcm_default_mmap(substream, area);
+        if (!err)
+                atomic_inc(&substream->mmap_count);
+        return err;
 }
 
 EXPORT_SYMBOL(snd_pcm_mmap_data);
diff --git a/sound/core/rawmidi.c b/sound/core/rawmidi.c
index 70d6f25ba526..2f766123b158 100644
--- a/sound/core/rawmidi.c
+++ b/sound/core/rawmidi.c
@@ -242,8 +242,6 @@ static int assign_substream(struct snd_rawmidi *rmidi, int subdevice,
                 return -ENXIO;
         if (subdevice >= 0 && subdevice >= s->substream_count)
                 return -ENODEV;
-        if (s->substream_opened >= s->substream_count)
-                return -EAGAIN;
 
         list_for_each_entry(substream, &s->substreams, list) {
                 if (substream->opened) {
@@ -280,9 +278,10 @@ static int open_substream(struct snd_rawmidi *rmidi,
                 substream->active_sensing = 0;
                 if (mode & SNDRV_RAWMIDI_LFLG_APPEND)
                         substream->append = 1;
+                substream->pid = get_pid(task_pid(current));
+                rmidi->streams[substream->stream].substream_opened++;
         }
         substream->use_count++;
-        rmidi->streams[substream->stream].substream_opened++;
         return 0;
 }
 
@@ -413,7 +412,7 @@ static int snd_rawmidi_open(struct inode *inode, struct file *file)
                 subdevice = -1;
                 read_lock(&card->ctl_files_rwlock);
                 list_for_each_entry(kctl, &card->ctl_files, list) {
-                        if (kctl->pid == current->pid) {
+                        if (kctl->pid == task_pid(current)) {
                                 subdevice = kctl->prefer_rawmidi_subdevice;
                                 if (subdevice != -1)
                                         break;
@@ -466,7 +465,6 @@ static void close_substream(struct snd_rawmidi *rmidi,
                             struct snd_rawmidi_substream *substream,
                             int cleanup)
 {
-        rmidi->streams[substream->stream].substream_opened--;
         if (--substream->use_count)
                 return;
 
@@ -491,6 +489,9 @@ static void close_substream(struct snd_rawmidi *rmidi,
         snd_rawmidi_runtime_free(substream);
         substream->opened = 0;
         substream->append = 0;
+        put_pid(substream->pid);
+        substream->pid = NULL;
+        rmidi->streams[substream->stream].substream_opened--;
 }
 
 static void rawmidi_release_priv(struct snd_rawmidi_file *rfile)
@@ -1338,6 +1339,9 @@ static void snd_rawmidi_proc_info_read(struct snd_info_entry *entry,
                                     substream->number,
                                     (unsigned long) substream->bytes);
                         if (substream->opened) {
+                                snd_iprintf(buffer,
+                                    "  Owner PID    : %d\n",
+                                    pid_vnr(substream->pid));
                                 runtime = substream->runtime;
                                 snd_iprintf(buffer,
                                     "  Mode         : %s\n"
@@ -1359,6 +1363,9 @@ static void snd_rawmidi_proc_info_read(struct snd_info_entry *entry,
                                     substream->number,
                                     (unsigned long) substream->bytes);
                         if (substream->opened) {
+                                snd_iprintf(buffer,
+                                            "  Owner PID    : %d\n",
+                                            pid_vnr(substream->pid));
                                 runtime = substream->runtime;
                                 snd_iprintf(buffer,
                                             "  Buffer size  : %lu\n"