diff options
Diffstat (limited to 'sound/usb')
-rw-r--r-- | sound/usb/6fire/firmware.c | 5 | ||||
-rw-r--r-- | sound/usb/card.c | 2 | ||||
-rw-r--r-- | sound/usb/card.h | 7 | ||||
-rw-r--r-- | sound/usb/endpoint.c | 39 | ||||
-rw-r--r-- | sound/usb/endpoint.h | 5 | ||||
-rw-r--r-- | sound/usb/helper.c | 5 | ||||
-rw-r--r-- | sound/usb/mixer.c | 7 | ||||
-rw-r--r-- | sound/usb/pcm.c | 126 | ||||
-rw-r--r-- | sound/usb/quirks-table.h | 99 | ||||
-rw-r--r-- | sound/usb/quirks.c | 24 | ||||
-rw-r--r-- | sound/usb/quirks.h | 10 | ||||
-rw-r--r-- | sound/usb/usx2y/us122l.c | 2 | ||||
-rw-r--r-- | sound/usb/usx2y/usX2Yhwdep.c | 2 | ||||
-rw-r--r-- | sound/usb/usx2y/usx2yhwdeppcm.c | 2 |
14 files changed, 265 insertions, 70 deletions
diff --git a/sound/usb/6fire/firmware.c b/sound/usb/6fire/firmware.c index 56ad923bf6b5..a1d9b0792a1e 100644 --- a/sound/usb/6fire/firmware.c +++ b/sound/usb/6fire/firmware.c @@ -346,11 +346,10 @@ static int usb6fire_fw_check(u8 *version) if (!memcmp(version, known_fw_versions + i, 4)) return 0; - snd_printk(KERN_ERR PREFIX "invalid fimware version in device: " - "%02x %02x %02x %02x. " + snd_printk(KERN_ERR PREFIX "invalid fimware version in device: %*ph. " "please reconnect to power. if this failure " "still happens, check your firmware installation.", - version[0], version[1], version[2], version[3]); + 4, version); return -EINVAL; } diff --git a/sound/usb/card.c b/sound/usb/card.c index 4a469f0cb6d4..561bb74fd364 100644 --- a/sound/usb/card.c +++ b/sound/usb/card.c @@ -646,6 +646,8 @@ static int usb_audio_suspend(struct usb_interface *intf, pm_message_t message) list_for_each(p, &chip->pcm_list) { as = list_entry(p, struct snd_usb_stream, list); snd_pcm_suspend_all(as->pcm); + as->substream[0].need_setup_ep = + as->substream[1].need_setup_ep = true; } } } else { diff --git a/sound/usb/card.h b/sound/usb/card.h index 2b9fffff23b6..afa4f9e9b27a 100644 --- a/sound/usb/card.h +++ b/sound/usb/card.h @@ -92,6 +92,8 @@ struct snd_usb_endpoint { unsigned char silence_value; unsigned int stride; int iface, alt_idx; + int skip_packets; /* quirks for devices to ignore the first n packets + in a stream */ spinlock_t lock; struct list_head list; @@ -105,6 +107,8 @@ struct snd_usb_substream { int interface; /* current interface */ int endpoint; /* assigned endpoint */ struct audioformat *cur_audiofmt; /* current audioformat pointer (for hw_params callback) */ + snd_pcm_format_t pcm_format; /* current audio format (for hw_params callback) */ + unsigned int channels; /* current number of channels (for hw_params callback) */ unsigned int cur_rate; /* current rate (for hw_params callback) */ unsigned int period_bytes; /* current period bytes (for hw_params callback) */ unsigned int altset_idx; /* USB data format: index of alternate setting */ @@ -115,14 +119,13 @@ struct snd_usb_substream { unsigned int hwptr_done; /* processed byte position in the buffer */ unsigned int transfer_done; /* processed frames since last period update */ - unsigned long active_mask; /* bitmask of active urbs */ - unsigned long unlink_mask; /* bitmask of unlinked urbs */ /* data and sync endpoints for this stream */ unsigned int ep_num; /* the endpoint number */ struct snd_usb_endpoint *data_endpoint; struct snd_usb_endpoint *sync_endpoint; unsigned long flags; + bool need_setup_ep; /* (re)configure EP at prepare? */ u64 formats; /* format bitmasks (all or'ed) */ unsigned int num_formats; /* number of supported audio formats (list) */ diff --git a/sound/usb/endpoint.c b/sound/usb/endpoint.c index 060dccb9ec75..7f78c6d782b0 100644 --- a/sound/usb/endpoint.c +++ b/sound/usb/endpoint.c @@ -31,6 +31,7 @@ #include "card.h" #include "endpoint.h" #include "pcm.h" +#include "quirks.h" #define EP_FLAG_ACTIVATED 0 #define EP_FLAG_RUNNING 1 @@ -170,6 +171,11 @@ static void retire_inbound_urb(struct snd_usb_endpoint *ep, { struct urb *urb = urb_ctx->urb; + if (unlikely(ep->skip_packets > 0)) { + ep->skip_packets--; + return; + } + if (ep->sync_slave) snd_usb_handle_sync_urb(ep->sync_slave, ep, urb); @@ -567,20 +573,19 @@ static void release_urbs(struct snd_usb_endpoint *ep, int force) * configure a data endpoint */ static int data_ep_set_params(struct snd_usb_endpoint *ep, - struct snd_pcm_hw_params *hw_params, + snd_pcm_format_t pcm_format, + unsigned int channels, + unsigned int period_bytes, struct audioformat *fmt, struct snd_usb_endpoint *sync_ep) { unsigned int maxsize, i, urb_packs, total_packs, packs_per_ms; - int period_bytes = params_period_bytes(hw_params); - int format = params_format(hw_params); int is_playback = usb_pipeout(ep->pipe); - int frame_bits = snd_pcm_format_physical_width(params_format(hw_params)) * - params_channels(hw_params); + int frame_bits = snd_pcm_format_physical_width(pcm_format) * channels; ep->datainterval = fmt->datainterval; ep->stride = frame_bits >> 3; - ep->silence_value = format == SNDRV_PCM_FORMAT_U8 ? 0x80 : 0; + ep->silence_value = pcm_format == SNDRV_PCM_FORMAT_U8 ? 0x80 : 0; /* calculate max. frequency */ if (ep->maxpacksize) { @@ -693,7 +698,6 @@ out_of_memory: * configure a sync endpoint */ static int sync_ep_set_params(struct snd_usb_endpoint *ep, - struct snd_pcm_hw_params *hw_params, struct audioformat *fmt) { int i; @@ -736,7 +740,10 @@ out_of_memory: * snd_usb_endpoint_set_params: configure an snd_usb_endpoint * * @ep: the snd_usb_endpoint to configure - * @hw_params: the hardware parameters + * @pcm_format: the audio fomat. + * @channels: the number of audio channels. + * @period_bytes: the number of bytes in one alsa period. + * @rate: the frame rate. * @fmt: the USB audio format information * @sync_ep: the sync endpoint to use, if any * @@ -745,7 +752,10 @@ out_of_memory: * An endpoint that is already running can not be reconfigured. */ int snd_usb_endpoint_set_params(struct snd_usb_endpoint *ep, - struct snd_pcm_hw_params *hw_params, + snd_pcm_format_t pcm_format, + unsigned int channels, + unsigned int period_bytes, + unsigned int rate, struct audioformat *fmt, struct snd_usb_endpoint *sync_ep) { @@ -765,9 +775,9 @@ int snd_usb_endpoint_set_params(struct snd_usb_endpoint *ep, ep->fill_max = !!(fmt->attributes & UAC_EP_CS_ATTR_FILL_MAX); if (snd_usb_get_speed(ep->chip->dev) == USB_SPEED_FULL) - ep->freqn = get_usb_full_speed_rate(params_rate(hw_params)); + ep->freqn = get_usb_full_speed_rate(rate); else - ep->freqn = get_usb_high_speed_rate(params_rate(hw_params)); + ep->freqn = get_usb_high_speed_rate(rate); /* calculate the frequency in 16.16 format */ ep->freqm = ep->freqn; @@ -777,10 +787,11 @@ int snd_usb_endpoint_set_params(struct snd_usb_endpoint *ep, switch (ep->type) { case SND_USB_ENDPOINT_TYPE_DATA: - err = data_ep_set_params(ep, hw_params, fmt, sync_ep); + err = data_ep_set_params(ep, pcm_format, channels, + period_bytes, fmt, sync_ep); break; case SND_USB_ENDPOINT_TYPE_SYNC: - err = sync_ep_set_params(ep, hw_params, fmt); + err = sync_ep_set_params(ep, fmt); break; default: err = -EINVAL; @@ -828,6 +839,8 @@ int snd_usb_endpoint_start(struct snd_usb_endpoint *ep, int can_sleep) ep->unlink_mask = 0; ep->phase = 0; + snd_usb_endpoint_start_quirk(ep); + /* * If this endpoint has a data endpoint as implicit feedback source, * don't start the urbs here. Instead, mark them all as available, diff --git a/sound/usb/endpoint.h b/sound/usb/endpoint.h index cbbbdf226d66..6376ccf10fd4 100644 --- a/sound/usb/endpoint.h +++ b/sound/usb/endpoint.h @@ -9,7 +9,10 @@ struct snd_usb_endpoint *snd_usb_add_endpoint(struct snd_usb_audio *chip, int ep_num, int direction, int type); int snd_usb_endpoint_set_params(struct snd_usb_endpoint *ep, - struct snd_pcm_hw_params *hw_params, + snd_pcm_format_t pcm_format, + unsigned int channels, + unsigned int period_bytes, + unsigned int rate, struct audioformat *fmt, struct snd_usb_endpoint *sync_ep); diff --git a/sound/usb/helper.c b/sound/usb/helper.c index 9eed8f40b179..c1db28f874c2 100644 --- a/sound/usb/helper.c +++ b/sound/usb/helper.c @@ -21,6 +21,7 @@ #include "usbaudio.h" #include "helper.h" +#include "quirks.h" /* * combine bytes and get an integer value @@ -97,6 +98,10 @@ int snd_usb_ctl_msg(struct usb_device *dev, unsigned int pipe, __u8 request, memcpy(data, buf, size); kfree(buf); } + + snd_usb_ctl_msg_quirk(dev, pipe, request, requesttype, + value, index, data, size); + return err; } diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c index 4f40ba823163..fe56c9da38e9 100644 --- a/sound/usb/mixer.c +++ b/sound/usb/mixer.c @@ -1267,6 +1267,13 @@ static int parse_audio_feature_unit(struct mixer_build *state, int unitid, void /* disable non-functional volume control */ master_bits &= ~UAC_CONTROL_BIT(UAC_FU_VOLUME); break; + case USB_ID(0x1130, 0xf211): + snd_printk(KERN_INFO + "usbmixer: volume control quirk for Tenx TP6911 Audio Headset\n"); + /* disable non-functional volume control */ + channels = 0; + break; + } if (channels > 0) first_ch_bits = snd_usb_combine_bytes(bmaControls + csize, csize); diff --git a/sound/usb/pcm.c b/sound/usb/pcm.c index f782ce19bf5a..55e19e1b80ec 100644 --- a/sound/usb/pcm.c +++ b/sound/usb/pcm.c @@ -82,8 +82,7 @@ static snd_pcm_uframes_t snd_usb_pcm_pointer(struct snd_pcm_substream *substream /* * find a matching audio format */ -static struct audioformat *find_format(struct snd_usb_substream *subs, unsigned int format, - unsigned int rate, unsigned int channels) +static struct audioformat *find_format(struct snd_usb_substream *subs) { struct list_head *p; struct audioformat *found = NULL; @@ -92,16 +91,17 @@ static struct audioformat *find_format(struct snd_usb_substream *subs, unsigned list_for_each(p, &subs->fmt_list) { struct audioformat *fp; fp = list_entry(p, struct audioformat, list); - if (!(fp->formats & (1uLL << format))) + if (!(fp->formats & (1uLL << subs->pcm_format))) continue; - if (fp->channels != channels) + if (fp->channels != subs->channels) continue; - if (rate < fp->rate_min || rate > fp->rate_max) + if (subs->cur_rate < fp->rate_min || + subs->cur_rate > fp->rate_max) continue; if (! (fp->rates & SNDRV_PCM_RATE_CONTINUOUS)) { unsigned int i; for (i = 0; i < fp->nr_rates; i++) - if (fp->rate_table[i] == rate) + if (fp->rate_table[i] == subs->cur_rate) break; if (i >= fp->nr_rates) continue; @@ -436,6 +436,42 @@ add_sync_ep: } /* + * configure endpoint params + * + * called during initial setup and upon resume + */ +static int configure_endpoint(struct snd_usb_substream *subs) +{ + int ret; + + mutex_lock(&subs->stream->chip->shutdown_mutex); + /* format changed */ + stop_endpoints(subs, 0, 0, 0); + ret = snd_usb_endpoint_set_params(subs->data_endpoint, + subs->pcm_format, + subs->channels, + subs->period_bytes, + subs->cur_rate, + subs->cur_audiofmt, + subs->sync_endpoint); + if (ret < 0) + goto unlock; + + if (subs->sync_endpoint) + ret = snd_usb_endpoint_set_params(subs->data_endpoint, + subs->pcm_format, + subs->channels, + subs->period_bytes, + subs->cur_rate, + subs->cur_audiofmt, + NULL); + +unlock: + mutex_unlock(&subs->stream->chip->shutdown_mutex); + return ret; +} + +/* * hw_params callback * * allocate a buffer and set the given audio format. @@ -450,63 +486,33 @@ static int snd_usb_hw_params(struct snd_pcm_substream *substream, { struct snd_usb_substream *subs = substream->runtime->private_data; struct audioformat *fmt; - unsigned int channels, rate, format; - int ret, changed; + int ret; ret = snd_pcm_lib_alloc_vmalloc_buffer(substream, params_buffer_bytes(hw_params)); if (ret < 0) return ret; - format = params_format(hw_params); - rate = params_rate(hw_params); - channels = params_channels(hw_params); - fmt = find_format(subs, format, rate, channels); + subs->pcm_format = params_format(hw_params); + subs->period_bytes = params_period_bytes(hw_params); + subs->channels = params_channels(hw_params); + subs->cur_rate = params_rate(hw_params); + + fmt = find_format(subs); if (!fmt) { snd_printd(KERN_DEBUG "cannot set format: format = %#x, rate = %d, channels = %d\n", - format, rate, channels); + subs->pcm_format, subs->cur_rate, subs->channels); return -EINVAL; } - changed = subs->cur_audiofmt != fmt || - subs->period_bytes != params_period_bytes(hw_params) || - subs->cur_rate != rate; if ((ret = set_format(subs, fmt)) < 0) return ret; - if (subs->cur_rate != rate) { - struct usb_host_interface *alts; - struct usb_interface *iface; - iface = usb_ifnum_to_if(subs->dev, fmt->iface); - alts = &iface->altsetting[fmt->altset_idx]; - ret = snd_usb_init_sample_rate(subs->stream->chip, fmt->iface, alts, fmt, rate); - if (ret < 0) - return ret; - subs->cur_rate = rate; - } - - if (changed) { - mutex_lock(&subs->stream->chip->shutdown_mutex); - /* format changed */ - stop_endpoints(subs, 0, 0, 0); - ret = snd_usb_endpoint_set_params(subs->data_endpoint, hw_params, fmt, - subs->sync_endpoint); - if (ret < 0) - goto unlock; + subs->interface = fmt->iface; + subs->altset_idx = fmt->altset_idx; + subs->need_setup_ep = true; - if (subs->sync_endpoint) - ret = snd_usb_endpoint_set_params(subs->sync_endpoint, - hw_params, fmt, NULL); -unlock: - mutex_unlock(&subs->stream->chip->shutdown_mutex); - } - - if (ret == 0) { - subs->interface = fmt->iface; - subs->altset_idx = fmt->altset_idx; - } - - return ret; + return 0; } /* @@ -537,6 +543,9 @@ static int snd_usb_pcm_prepare(struct snd_pcm_substream *substream) { struct snd_pcm_runtime *runtime = substream->runtime; struct snd_usb_substream *subs = runtime->private_data; + struct usb_host_interface *alts; + struct usb_interface *iface; + int ret; if (! subs->cur_audiofmt) { snd_printk(KERN_ERR "usbaudio: no format is specified!\n"); @@ -546,6 +555,27 @@ static int snd_usb_pcm_prepare(struct snd_pcm_substream *substream) if (snd_BUG_ON(!subs->data_endpoint)) return -EIO; + ret = set_format(subs, subs->cur_audiofmt); + if (ret < 0) + return ret; + + iface = usb_ifnum_to_if(subs->dev, subs->cur_audiofmt->iface); + alts = &iface->altsetting[subs->cur_audiofmt->altset_idx]; + ret = snd_usb_init_sample_rate(subs->stream->chip, + subs->cur_audiofmt->iface, + alts, + subs->cur_audiofmt, + subs->cur_rate); + if (ret < 0) + return ret; + + if (subs->need_setup_ep) { + ret = configure_endpoint(subs); + if (ret < 0) + return ret; + subs->need_setup_ep = false; + } + /* some unit conversions in runtime */ subs->data_endpoint->maxframesize = bytes_to_frames(runtime, subs->data_endpoint->maxpacksize); diff --git a/sound/usb/quirks-table.h b/sound/usb/quirks-table.h index 79780fa57a43..88d8cebbb244 100644 --- a/sound/usb/quirks-table.h +++ b/sound/usb/quirks-table.h @@ -2780,6 +2780,105 @@ YAMAHA_DEVICE(0x7010, "UB99"), } }, +{ + /* Tascam US122 MKII - playback-only support */ + .match_flags = USB_DEVICE_ID_MATCH_DEVICE, + .idVendor = 0x0644, + .idProduct = 0x8021, + .bInterfaceClass = USB_CLASS_AUDIO, + .driver_info = (unsigned long) &(const struct snd_usb_audio_quirk) { + .vendor_name = "TASCAM", + .product_name = "US122 MKII", + .ifnum = QUIRK_ANY_INTERFACE, + .type = QUIRK_COMPOSITE, + .data = (const struct snd_usb_audio_quirk[]) { + { + .ifnum = 0, + .type = QUIRK_IGNORE_INTERFACE + }, + { + .ifnum = 1, + .type = QUIRK_AUDIO_FIXED_ENDPOINT, + .data = &(const struct audioformat) { + .formats = SNDRV_PCM_FMTBIT_S24_3LE, + .channels = 2, + .iface = 1, + .altsetting = 1, + .altset_idx = 1, + .attributes = UAC_EP_CS_ATTR_SAMPLE_RATE, + .endpoint = 0x02, + .ep_attr = USB_ENDPOINT_XFER_ISOC, + .rates = SNDRV_PCM_RATE_44100 | + SNDRV_PCM_RATE_48000 | + SNDRV_PCM_RATE_88200 | + SNDRV_PCM_RATE_96000, + .rate_min = 44100, + .rate_max = 96000, + .nr_rates = 4, + .rate_table = (unsigned int[]) { + 44100, 48000, 88200, 96000 + } + } + }, + { + .ifnum = -1 + } + } + } +}, + +/* Microsoft XboxLive Headset/Xbox Communicator */ +{ + USB_DEVICE(0x045e, 0x0283), + .bInterfaceClass = USB_CLASS_PER_INTERFACE, + .driver_info = (unsigned long) &(const struct snd_usb_audio_quirk) { + .vendor_name = "Microsoft", + .product_name = "XboxLive Headset/Xbox Communicator", + .ifnum = QUIRK_ANY_INTERFACE, + .type = QUIRK_COMPOSITE, + .data = &(const struct snd_usb_audio_quirk[]) { + { + /* playback */ + .ifnum = 0, + .type = QUIRK_AUDIO_FIXED_ENDPOINT, + .data = &(const struct audioformat) { + .formats = SNDRV_PCM_FMTBIT_S16_LE, + .channels = 1, + .iface = 0, + .altsetting = 0, + .altset_idx = 0, + .attributes = 0, + .endpoint = 0x04, + .ep_attr = 0x05, + .rates = SNDRV_PCM_RATE_CONTINUOUS, + .rate_min = 22050, + .rate_max = 22050 + } + }, + { + /* capture */ + .ifnum = 1, + .type = QUIRK_AUDIO_FIXED_ENDPOINT, + .data = &(const struct audioformat) { + .formats = SNDRV_PCM_FMTBIT_S16_LE, + .channels = 1, + .iface = 1, + .altsetting = 0, + .altset_idx = 0, + .attributes = 0, + .endpoint = 0x85, + .ep_attr = 0x05, + .rates = SNDRV_PCM_RATE_CONTINUOUS, + .rate_min = 16000, + .rate_max = 16000 + } + }, + { + .ifnum = -1 + } + } + } +}, { /* diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c index 27817266867a..0f58b4b6d702 100644 --- a/sound/usb/quirks.c +++ b/sound/usb/quirks.c @@ -761,3 +761,27 @@ void snd_usb_set_format_quirk(struct snd_usb_substream *subs, } } +void snd_usb_endpoint_start_quirk(struct snd_usb_endpoint *ep) +{ + /* + * "Playback Design" products send bogus feedback data at the start + * of the stream. Ignore them. + */ + if ((le16_to_cpu(ep->chip->dev->descriptor.idVendor) == 0x23ba) && + ep->type == SND_USB_ENDPOINT_TYPE_SYNC) + ep->skip_packets = 4; +} + +void snd_usb_ctl_msg_quirk(struct usb_device *dev, unsigned int pipe, + __u8 request, __u8 requesttype, __u16 value, + __u16 index, void *data, __u16 size) +{ + /* + * "Playback Design" products need a 20ms delay after each + * class compliant request + */ + if ((le16_to_cpu(dev->descriptor.idVendor) == 0x23ba) && + (requesttype & USB_TYPE_MASK) == USB_TYPE_CLASS) + mdelay(20); +} + diff --git a/sound/usb/quirks.h b/sound/usb/quirks.h index 03e5e94098cd..0ca9e91067a6 100644 --- a/sound/usb/quirks.h +++ b/sound/usb/quirks.h @@ -1,6 +1,10 @@ #ifndef __USBAUDIO_QUIRKS_H #define __USBAUDIO_QUIRKS_H +struct audioformat; +struct snd_usb_endpoint; +struct snd_usb_substream; + int snd_usb_create_quirk(struct snd_usb_audio *chip, struct usb_interface *iface, struct usb_driver *driver, @@ -20,4 +24,10 @@ void snd_usb_set_format_quirk(struct snd_usb_substream *subs, int snd_usb_is_big_endian_format(struct snd_usb_audio *chip, struct audioformat *fp); +void snd_usb_endpoint_start_quirk(struct snd_usb_endpoint *ep); + +void snd_usb_ctl_msg_quirk(struct usb_device *dev, unsigned int pipe, + __u8 request, __u8 requesttype, __u16 value, + __u16 index, void *data, __u16 size); + #endif /* __USBAUDIO_QUIRKS_H */ diff --git a/sound/usb/usx2y/us122l.c b/sound/usb/usx2y/us122l.c index c4fd3b1d9592..d0323a693ba2 100644 --- a/sound/usb/usx2y/us122l.c +++ b/sound/usb/usx2y/us122l.c @@ -262,7 +262,7 @@ static int usb_stream_hwdep_mmap(struct snd_hwdep *hw, } area->vm_ops = &usb_stream_hwdep_vm_ops; - area->vm_flags |= VM_RESERVED; + area->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP; area->vm_private_data = us122l; atomic_inc(&us122l->mmap_count); out: diff --git a/sound/usb/usx2y/usX2Yhwdep.c b/sound/usb/usx2y/usX2Yhwdep.c index 04aafb43a13c..0b34dbc8f302 100644 --- a/sound/usb/usx2y/usX2Yhwdep.c +++ b/sound/usb/usx2y/usX2Yhwdep.c @@ -82,7 +82,7 @@ static int snd_us428ctls_mmap(struct snd_hwdep * hw, struct file *filp, struct v us428->us428ctls_sharedmem->CtlSnapShotLast = -2; } area->vm_ops = &us428ctls_vm_ops; - area->vm_flags |= VM_RESERVED | VM_DONTEXPAND; + area->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP; area->vm_private_data = hw->private_data; return 0; } diff --git a/sound/usb/usx2y/usx2yhwdeppcm.c b/sound/usb/usx2y/usx2yhwdeppcm.c index 8e40b6e67e9e..cc56007791e0 100644 --- a/sound/usb/usx2y/usx2yhwdeppcm.c +++ b/sound/usb/usx2y/usx2yhwdeppcm.c @@ -723,7 +723,7 @@ static int snd_usX2Y_hwdep_pcm_mmap(struct snd_hwdep * hw, struct file *filp, st return -ENODEV; } area->vm_ops = &snd_usX2Y_hwdep_pcm_vm_ops; - area->vm_flags |= VM_RESERVED | VM_DONTEXPAND; + area->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP; area->vm_private_data = hw->private_data; return 0; } |