Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * 32bit -> 64bit ioctl wrapper for PCM API | |
3 | * Copyright (c) by Takashi Iwai <tiwai@suse.de> | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation; either version 2 of the License, or | |
8 | * (at your option) any later version. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with this program; if not, write to the Free Software | |
17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
18 | * | |
19 | */ | |
20 | ||
21 | /* This file included from pcm_native.c */ | |
22 | ||
23 | #include <linux/compat.h> | |
24 | ||
25 | static int snd_pcm_ioctl_delay_compat(snd_pcm_substream_t *substream, | |
26 | s32 __user *src) | |
27 | { | |
28 | snd_pcm_sframes_t delay; | |
29 | mm_segment_t fs; | |
30 | int err; | |
31 | ||
32 | fs = snd_enter_user(); | |
33 | err = snd_pcm_delay(substream, &delay); | |
34 | snd_leave_user(fs); | |
35 | if (err < 0) | |
36 | return err; | |
37 | if (put_user(delay, src)) | |
38 | return -EFAULT; | |
39 | return err; | |
40 | } | |
41 | ||
42 | static int snd_pcm_ioctl_rewind_compat(snd_pcm_substream_t *substream, | |
43 | u32 __user *src) | |
44 | { | |
45 | snd_pcm_uframes_t frames; | |
46 | int err; | |
47 | ||
48 | if (get_user(frames, src)) | |
49 | return -EFAULT; | |
50 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
51 | err = snd_pcm_playback_rewind(substream, frames); | |
52 | else | |
53 | err = snd_pcm_capture_rewind(substream, frames); | |
54 | if (put_user(err, src)) | |
55 | return -EFAULT; | |
56 | return err < 0 ? err : 0; | |
57 | } | |
58 | ||
59 | static int snd_pcm_ioctl_forward_compat(snd_pcm_substream_t *substream, | |
60 | u32 __user *src) | |
61 | { | |
62 | snd_pcm_uframes_t frames; | |
63 | int err; | |
64 | ||
65 | if (get_user(frames, src)) | |
66 | return -EFAULT; | |
67 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
68 | err = snd_pcm_playback_forward(substream, frames); | |
69 | else | |
70 | err = snd_pcm_capture_forward(substream, frames); | |
71 | if (put_user(err, src)) | |
72 | return -EFAULT; | |
73 | return err < 0 ? err : 0; | |
74 | } | |
75 | ||
76 | struct sndrv_pcm_hw_params32 { | |
77 | u32 flags; | |
78 | struct sndrv_mask masks[SNDRV_PCM_HW_PARAM_LAST_MASK - SNDRV_PCM_HW_PARAM_FIRST_MASK + 1]; /* this must be identical */ | |
79 | struct sndrv_mask mres[5]; /* reserved masks */ | |
80 | struct sndrv_interval intervals[SNDRV_PCM_HW_PARAM_LAST_INTERVAL - SNDRV_PCM_HW_PARAM_FIRST_INTERVAL + 1]; | |
81 | struct sndrv_interval ires[9]; /* reserved intervals */ | |
82 | u32 rmask; | |
83 | u32 cmask; | |
84 | u32 info; | |
85 | u32 msbits; | |
86 | u32 rate_num; | |
87 | u32 rate_den; | |
88 | u32 fifo_size; | |
89 | unsigned char reserved[64]; | |
90 | }; | |
91 | ||
92 | struct sndrv_pcm_sw_params32 { | |
93 | s32 tstamp_mode; | |
94 | u32 period_step; | |
95 | u32 sleep_min; | |
96 | u32 avail_min; | |
97 | u32 xfer_align; | |
98 | u32 start_threshold; | |
99 | u32 stop_threshold; | |
100 | u32 silence_threshold; | |
101 | u32 silence_size; | |
102 | u32 boundary; | |
103 | unsigned char reserved[64]; | |
104 | }; | |
105 | ||
106 | static int snd_pcm_ioctl_sw_params_compat(snd_pcm_substream_t *substream, | |
107 | struct sndrv_pcm_sw_params32 __user *src) | |
108 | { | |
109 | snd_pcm_sw_params_t params; | |
110 | int err; | |
111 | ||
112 | memset(¶ms, 0, sizeof(params)); | |
113 | if (get_user(params.tstamp_mode, &src->tstamp_mode) || | |
114 | get_user(params.period_step, &src->period_step) || | |
115 | get_user(params.sleep_min, &src->sleep_min) || | |
116 | get_user(params.avail_min, &src->avail_min) || | |
117 | get_user(params.xfer_align, &src->xfer_align) || | |
118 | get_user(params.start_threshold, &src->start_threshold) || | |
119 | get_user(params.stop_threshold, &src->stop_threshold) || | |
120 | get_user(params.silence_threshold, &src->silence_threshold) || | |
121 | get_user(params.silence_size, &src->silence_size)) | |
122 | return -EFAULT; | |
123 | err = snd_pcm_sw_params(substream, ¶ms); | |
124 | if (err < 0) | |
125 | return err; | |
126 | if (put_user(params.boundary, &src->boundary)) | |
127 | return -EFAULT; | |
128 | return err; | |
129 | } | |
130 | ||
131 | struct sndrv_pcm_channel_info32 { | |
132 | u32 channel; | |
133 | u32 offset; | |
134 | u32 first; | |
135 | u32 step; | |
136 | }; | |
137 | ||
138 | static int snd_pcm_ioctl_channel_info_compat(snd_pcm_substream_t *substream, | |
139 | struct sndrv_pcm_channel_info32 __user *src) | |
140 | { | |
141 | snd_pcm_channel_info_t info; | |
142 | int err; | |
143 | ||
144 | if (get_user(info.channel, &src->channel) || | |
145 | get_user(info.offset, &src->offset) || | |
146 | get_user(info.first, &src->first) || | |
147 | get_user(info.step, &src->step)) | |
148 | return -EFAULT; | |
149 | err = snd_pcm_channel_info(substream, &info); | |
150 | if (err < 0) | |
151 | return err; | |
152 | if (put_user(info.channel, &src->channel) || | |
153 | put_user(info.offset, &src->offset) || | |
154 | put_user(info.first, &src->first) || | |
155 | put_user(info.step, &src->step)) | |
156 | return -EFAULT; | |
157 | return err; | |
158 | } | |
159 | ||
160 | struct sndrv_pcm_status32 { | |
161 | s32 state; | |
162 | struct compat_timespec trigger_tstamp; | |
163 | struct compat_timespec tstamp; | |
164 | u32 appl_ptr; | |
165 | u32 hw_ptr; | |
166 | s32 delay; | |
167 | u32 avail; | |
168 | u32 avail_max; | |
169 | u32 overrange; | |
170 | s32 suspended_state; | |
171 | unsigned char reserved[60]; | |
172 | } __attribute__((packed)); | |
173 | ||
174 | ||
175 | static int snd_pcm_status_user_compat(snd_pcm_substream_t *substream, | |
176 | struct sndrv_pcm_status32 __user *src) | |
177 | { | |
178 | snd_pcm_status_t status; | |
179 | int err; | |
180 | ||
181 | err = snd_pcm_status(substream, &status); | |
182 | if (err < 0) | |
183 | return err; | |
184 | ||
185 | if (put_user(status.state, &src->state) || | |
186 | put_user(status.trigger_tstamp.tv_sec, &src->trigger_tstamp.tv_sec) || | |
187 | put_user(status.trigger_tstamp.tv_nsec, &src->trigger_tstamp.tv_nsec) || | |
188 | put_user(status.tstamp.tv_sec, &src->tstamp.tv_sec) || | |
189 | put_user(status.tstamp.tv_nsec, &src->tstamp.tv_nsec) || | |
190 | put_user(status.appl_ptr, &src->appl_ptr) || | |
191 | put_user(status.hw_ptr, &src->hw_ptr) || | |
192 | put_user(status.delay, &src->delay) || | |
193 | put_user(status.avail, &src->avail) || | |
194 | put_user(status.avail_max, &src->avail_max) || | |
195 | put_user(status.overrange, &src->overrange) || | |
196 | put_user(status.suspended_state, &src->suspended_state)) | |
197 | return -EFAULT; | |
198 | ||
199 | return err; | |
200 | } | |
201 | ||
202 | /* recalcuate the boundary within 32bit */ | |
203 | static void recalculate_boundary(snd_pcm_runtime_t *runtime) | |
204 | { | |
205 | if (! runtime->buffer_size) | |
206 | return; | |
207 | runtime->boundary = runtime->buffer_size; | |
208 | while (runtime->boundary * 2 <= 0x7fffffffUL - runtime->buffer_size) | |
209 | runtime->boundary *= 2; | |
210 | } | |
211 | ||
212 | /* both for HW_PARAMS and HW_REFINE */ | |
213 | static int snd_pcm_ioctl_hw_params_compat(snd_pcm_substream_t *substream, | |
214 | int refine, | |
215 | struct sndrv_pcm_hw_params32 __user *data32) | |
216 | { | |
217 | struct sndrv_pcm_hw_params *data; | |
218 | snd_pcm_runtime_t *runtime; | |
219 | int err; | |
220 | ||
221 | if (! (runtime = substream->runtime)) | |
222 | return -ENOTTY; | |
223 | ||
224 | data = kmalloc(sizeof(*data), GFP_KERNEL); | |
225 | if (data == NULL) | |
226 | return -ENOMEM; | |
227 | /* only fifo_size is different, so just copy all */ | |
228 | if (copy_from_user(data, data32, sizeof(*data32))) { | |
229 | err = -EFAULT; | |
230 | goto error; | |
231 | } | |
232 | if (refine) | |
233 | err = snd_pcm_hw_refine(substream, data); | |
234 | else | |
235 | err = snd_pcm_hw_params(substream, data); | |
236 | if (err < 0) | |
237 | goto error; | |
238 | if (copy_to_user(data32, data, sizeof(*data32)) || | |
239 | put_user(data->fifo_size, &data32->fifo_size)) { | |
240 | err = -EFAULT; | |
241 | goto error; | |
242 | } | |
243 | ||
244 | if (! refine) | |
245 | recalculate_boundary(runtime); | |
246 | error: | |
247 | kfree(data); | |
248 | return err; | |
249 | } | |
250 | ||
251 | ||
252 | /* | |
253 | */ | |
254 | struct sndrv_xferi32 { | |
255 | s32 result; | |
256 | u32 buf; | |
257 | u32 frames; | |
258 | }; | |
259 | ||
260 | static int snd_pcm_ioctl_xferi_compat(snd_pcm_substream_t *substream, | |
261 | int dir, struct sndrv_xferi32 __user *data32) | |
262 | { | |
263 | compat_caddr_t buf; | |
264 | u32 frames; | |
265 | int err; | |
266 | ||
267 | if (! substream->runtime) | |
268 | return -ENOTTY; | |
269 | if (substream->stream != dir) | |
270 | return -EINVAL; | |
271 | if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
272 | return -EBADFD; | |
273 | ||
274 | if (get_user(buf, &data32->buf) || | |
275 | get_user(frames, &data32->frames)) | |
276 | return -EFAULT; | |
277 | ||
278 | if (dir == SNDRV_PCM_STREAM_PLAYBACK) | |
279 | err = snd_pcm_lib_write(substream, compat_ptr(buf), frames); | |
280 | else | |
281 | err = snd_pcm_lib_read(substream, compat_ptr(buf), frames); | |
282 | if (err < 0) | |
283 | return err; | |
284 | /* copy the result */ | |
285 | if (put_user(err, &data32->result)) | |
286 | return -EFAULT; | |
287 | return 0; | |
288 | } | |
289 | ||
290 | ||
291 | /* snd_xfern needs remapping of bufs */ | |
292 | struct sndrv_xfern32 { | |
293 | s32 result; | |
294 | u32 bufs; /* this is void **; */ | |
295 | u32 frames; | |
296 | }; | |
297 | ||
298 | /* | |
299 | * xfern ioctl nees to copy (up to) 128 pointers on stack. | |
300 | * although we may pass the copied pointers through f_op->ioctl, but the ioctl | |
301 | * handler there expands again the same 128 pointers on stack, so it is better | |
302 | * to handle the function (calling pcm_readv/writev) directly in this handler. | |
303 | */ | |
304 | static int snd_pcm_ioctl_xfern_compat(snd_pcm_substream_t *substream, | |
305 | int dir, struct sndrv_xfern32 __user *data32) | |
306 | { | |
307 | compat_caddr_t buf; | |
308 | compat_caddr_t __user *bufptr; | |
309 | u32 frames; | |
310 | void __user **bufs; | |
311 | int err, ch, i; | |
312 | ||
313 | if (! substream->runtime) | |
314 | return -ENOTTY; | |
315 | if (substream->stream != dir) | |
316 | return -EINVAL; | |
317 | ||
318 | if ((ch = substream->runtime->channels) > 128) | |
319 | return -EINVAL; | |
320 | if (get_user(buf, &data32->bufs) || | |
321 | get_user(frames, &data32->frames)) | |
322 | return -EFAULT; | |
323 | bufptr = compat_ptr(buf); | |
324 | bufs = kmalloc(sizeof(void __user *) * ch, GFP_KERNEL); | |
325 | if (bufs == NULL) | |
326 | return -ENOMEM; | |
327 | for (i = 0; i < ch; i++) { | |
328 | u32 ptr; | |
329 | if (get_user(ptr, bufptr)) { | |
330 | kfree(bufs); | |
331 | return -EFAULT; | |
332 | } | |
333 | bufs[ch] = compat_ptr(ptr); | |
334 | bufptr++; | |
335 | } | |
336 | if (dir == SNDRV_PCM_STREAM_PLAYBACK) | |
337 | err = snd_pcm_lib_writev(substream, bufs, frames); | |
338 | else | |
339 | err = snd_pcm_lib_readv(substream, bufs, frames); | |
340 | if (err >= 0) { | |
341 | if (put_user(err, &data32->result)) | |
342 | err = -EFAULT; | |
343 | } | |
344 | kfree(bufs); | |
345 | return err; | |
346 | } | |
347 | ||
348 | ||
349 | struct sndrv_pcm_mmap_status32 { | |
350 | s32 state; | |
351 | s32 pad1; | |
352 | u32 hw_ptr; | |
353 | struct compat_timespec tstamp; | |
354 | s32 suspended_state; | |
355 | } __attribute__((packed)); | |
356 | ||
357 | struct sndrv_pcm_mmap_control32 { | |
358 | u32 appl_ptr; | |
359 | u32 avail_min; | |
360 | }; | |
361 | ||
362 | struct sndrv_pcm_sync_ptr32 { | |
363 | u32 flags; | |
364 | union { | |
365 | struct sndrv_pcm_mmap_status32 status; | |
366 | unsigned char reserved[64]; | |
367 | } s; | |
368 | union { | |
369 | struct sndrv_pcm_mmap_control32 control; | |
370 | unsigned char reserved[64]; | |
371 | } c; | |
372 | } __attribute__((packed)); | |
373 | ||
374 | static int snd_pcm_ioctl_sync_ptr_compat(snd_pcm_substream_t *substream, | |
375 | struct sndrv_pcm_sync_ptr32 __user *src) | |
376 | { | |
377 | snd_pcm_runtime_t *runtime = substream->runtime; | |
378 | volatile struct sndrv_pcm_mmap_status *status; | |
379 | volatile struct sndrv_pcm_mmap_control *control; | |
380 | u32 sflags; | |
381 | struct sndrv_pcm_mmap_control scontrol; | |
382 | struct sndrv_pcm_mmap_status sstatus; | |
383 | int err; | |
384 | ||
385 | snd_assert(runtime, return -EINVAL); | |
386 | ||
387 | if (get_user(sflags, &src->flags) || | |
388 | get_user(scontrol.appl_ptr, &src->c.control.appl_ptr) || | |
389 | get_user(scontrol.avail_min, &src->c.control.avail_min)) | |
390 | return -EFAULT; | |
391 | if (sflags & SNDRV_PCM_SYNC_PTR_HWSYNC) { | |
392 | err = snd_pcm_hwsync(substream); | |
393 | if (err < 0) | |
394 | return err; | |
395 | } | |
396 | status = runtime->status; | |
397 | control = runtime->control; | |
398 | snd_pcm_stream_lock_irq(substream); | |
399 | if (!(sflags & SNDRV_PCM_SYNC_PTR_APPL)) | |
400 | control->appl_ptr = scontrol.appl_ptr; | |
401 | else | |
402 | scontrol.appl_ptr = control->appl_ptr; | |
403 | if (!(sflags & SNDRV_PCM_SYNC_PTR_AVAIL_MIN)) | |
404 | control->avail_min = scontrol.avail_min; | |
405 | else | |
406 | scontrol.avail_min = control->avail_min; | |
407 | sstatus.state = status->state; | |
408 | sstatus.hw_ptr = status->hw_ptr; | |
409 | sstatus.tstamp = status->tstamp; | |
410 | sstatus.suspended_state = status->suspended_state; | |
411 | snd_pcm_stream_unlock_irq(substream); | |
412 | if (put_user(sstatus.state, &src->s.status.state) || | |
413 | put_user(sstatus.hw_ptr, &src->s.status.hw_ptr) || | |
414 | put_user(sstatus.tstamp.tv_sec, &src->s.status.tstamp.tv_sec) || | |
415 | put_user(sstatus.tstamp.tv_nsec, &src->s.status.tstamp.tv_nsec) || | |
416 | put_user(sstatus.suspended_state, &src->s.status.suspended_state) || | |
417 | put_user(scontrol.appl_ptr, &src->c.control.appl_ptr) || | |
418 | put_user(scontrol.avail_min, &src->c.control.avail_min)) | |
419 | return -EFAULT; | |
420 | ||
421 | return 0; | |
422 | } | |
423 | ||
424 | ||
425 | /* | |
426 | */ | |
427 | enum { | |
428 | SNDRV_PCM_IOCTL_HW_REFINE32 = _IOWR('A', 0x10, struct sndrv_pcm_hw_params32), | |
429 | SNDRV_PCM_IOCTL_HW_PARAMS32 = _IOWR('A', 0x11, struct sndrv_pcm_hw_params32), | |
430 | SNDRV_PCM_IOCTL_SW_PARAMS32 = _IOWR('A', 0x13, struct sndrv_pcm_sw_params32), | |
431 | SNDRV_PCM_IOCTL_STATUS32 = _IOR('A', 0x20, struct sndrv_pcm_status32), | |
432 | SNDRV_PCM_IOCTL_DELAY32 = _IOR('A', 0x21, s32), | |
433 | SNDRV_PCM_IOCTL_CHANNEL_INFO32 = _IOR('A', 0x32, struct sndrv_pcm_channel_info32), | |
434 | SNDRV_PCM_IOCTL_REWIND32 = _IOW('A', 0x46, u32), | |
435 | SNDRV_PCM_IOCTL_FORWARD32 = _IOW('A', 0x49, u32), | |
436 | SNDRV_PCM_IOCTL_WRITEI_FRAMES32 = _IOW('A', 0x50, struct sndrv_xferi32), | |
437 | SNDRV_PCM_IOCTL_READI_FRAMES32 = _IOR('A', 0x51, struct sndrv_xferi32), | |
438 | SNDRV_PCM_IOCTL_WRITEN_FRAMES32 = _IOW('A', 0x52, struct sndrv_xfern32), | |
439 | SNDRV_PCM_IOCTL_READN_FRAMES32 = _IOR('A', 0x53, struct sndrv_xfern32), | |
440 | SNDRV_PCM_IOCTL_SYNC_PTR32 = _IOWR('A', 0x23, struct sndrv_pcm_sync_ptr32), | |
441 | ||
442 | }; | |
443 | ||
444 | static long snd_pcm_ioctl_compat(struct file *file, unsigned int cmd, unsigned long arg) | |
445 | { | |
446 | snd_pcm_file_t *pcm_file; | |
447 | snd_pcm_substream_t *substream; | |
448 | void __user *argp = compat_ptr(arg); | |
449 | ||
450 | pcm_file = file->private_data; | |
451 | if (! pcm_file) | |
452 | return -ENOTTY; | |
453 | substream = pcm_file->substream; | |
454 | if (! substream) | |
455 | return -ENOTTY; | |
456 | ||
457 | /* | |
458 | * When PCM is used on 32bit mode, we need to disable | |
459 | * mmap of PCM status/control records because of the size | |
460 | * incompatibility. | |
461 | */ | |
462 | substream->no_mmap_ctrl = 1; | |
463 | ||
464 | switch (cmd) { | |
465 | case SNDRV_PCM_IOCTL_PVERSION: | |
466 | case SNDRV_PCM_IOCTL_INFO: | |
467 | case SNDRV_PCM_IOCTL_TSTAMP: | |
468 | case SNDRV_PCM_IOCTL_HWSYNC: | |
469 | case SNDRV_PCM_IOCTL_PREPARE: | |
470 | case SNDRV_PCM_IOCTL_RESET: | |
471 | case SNDRV_PCM_IOCTL_START: | |
472 | case SNDRV_PCM_IOCTL_DROP: | |
473 | case SNDRV_PCM_IOCTL_DRAIN: | |
474 | case SNDRV_PCM_IOCTL_PAUSE: | |
475 | case SNDRV_PCM_IOCTL_HW_FREE: | |
476 | case SNDRV_PCM_IOCTL_RESUME: | |
477 | case SNDRV_PCM_IOCTL_XRUN: | |
478 | case SNDRV_PCM_IOCTL_LINK: | |
479 | case SNDRV_PCM_IOCTL_UNLINK: | |
480 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
481 | return snd_pcm_playback_ioctl1(substream, cmd, argp); | |
482 | else | |
483 | return snd_pcm_capture_ioctl1(substream, cmd, argp); | |
484 | case SNDRV_PCM_IOCTL_HW_REFINE32: | |
485 | return snd_pcm_ioctl_hw_params_compat(substream, 1, argp); | |
486 | case SNDRV_PCM_IOCTL_HW_PARAMS32: | |
487 | return snd_pcm_ioctl_hw_params_compat(substream, 0, argp); | |
488 | case SNDRV_PCM_IOCTL_SW_PARAMS32: | |
489 | return snd_pcm_ioctl_sw_params_compat(substream, argp); | |
490 | case SNDRV_PCM_IOCTL_STATUS32: | |
491 | return snd_pcm_status_user_compat(substream, argp); | |
492 | case SNDRV_PCM_IOCTL_SYNC_PTR32: | |
493 | return snd_pcm_ioctl_sync_ptr_compat(substream, argp); | |
494 | case SNDRV_PCM_IOCTL_CHANNEL_INFO32: | |
495 | return snd_pcm_ioctl_channel_info_compat(substream, argp); | |
496 | case SNDRV_PCM_IOCTL_WRITEI_FRAMES32: | |
497 | return snd_pcm_ioctl_xferi_compat(substream, SNDRV_PCM_STREAM_PLAYBACK, argp); | |
498 | case SNDRV_PCM_IOCTL_READI_FRAMES32: | |
499 | return snd_pcm_ioctl_xferi_compat(substream, SNDRV_PCM_STREAM_CAPTURE, argp); | |
500 | case SNDRV_PCM_IOCTL_WRITEN_FRAMES32: | |
501 | return snd_pcm_ioctl_xfern_compat(substream, SNDRV_PCM_STREAM_PLAYBACK, argp); | |
502 | case SNDRV_PCM_IOCTL_READN_FRAMES32: | |
503 | return snd_pcm_ioctl_xfern_compat(substream, SNDRV_PCM_STREAM_CAPTURE, argp); | |
504 | case SNDRV_PCM_IOCTL_DELAY32: | |
505 | return snd_pcm_ioctl_delay_compat(substream, argp); | |
506 | case SNDRV_PCM_IOCTL_REWIND32: | |
507 | return snd_pcm_ioctl_rewind_compat(substream, argp); | |
508 | case SNDRV_PCM_IOCTL_FORWARD32: | |
509 | return snd_pcm_ioctl_forward_compat(substream, argp); | |
510 | } | |
511 | ||
512 | return -ENOIOCTLCMD; | |
513 | } |