Merge tag 'powerpc-5.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc updates from Michael Ellerman:

 - Support for userspace to send requests directly to the on-chip GZIP
   accelerator on Power9.

 - Rework of our lockless page table walking (__find_linux_pte()) to
   make it safe against parallel page table manipulations without
   relying on an IPI for serialisation.

 - A series of fixes & enhancements to make our machine check handling
   more robust.

 - Lots of plumbing to add support for "prefixed" (64-bit) instructions
   on Power10.

 - Support for using huge pages for the linear mapping on 8xx (32-bit).

 - Remove obsolete Xilinx PPC405/PPC440 support, and an associated sound
   driver.

 - Removal of some obsolete 40x platforms and associated cruft.

 - Initial support for booting on Power10.

 - Lots of other small features, cleanups & fixes.

Thanks to: Alexey Kardashevskiy, Alistair Popple, Andrew Donnellan,
Andrey Abramov, Aneesh Kumar K.V, Balamuruhan S, Bharata B Rao, Bulent
Abali, Cédric Le Goater, Chen Zhou, Christian Zigotzky, Christophe
JAILLET, Christophe Leroy, Dmitry Torokhov, Emmanuel Nicolet, Erhard F.,
Gautham R. Shenoy, Geoff Levand, George Spelvin, Greg Kurz, Gustavo A.
R. Silva, Gustavo Walbon, Haren Myneni, Hari Bathini, Joel Stanley,
Jordan Niethe, Kajol Jain, Kees Cook, Leonardo Bras, Madhavan
Srinivasan., Mahesh Salgaonkar, Markus Elfring, Michael Neuling, Michal
Simek, Nathan Chancellor, Nathan Lynch, Naveen N. Rao, Nicholas Piggin,
Oliver O'Halloran, Paul Mackerras, Pingfan Liu, Qian Cai, Ram Pai,
Raphael Moreira Zinsly, Ravi Bangoria, Sam Bobroff, Sandipan Das, Segher
Boessenkool, Stephen Rothwell, Sukadev Bhattiprolu, Tyrel Datwyler,
Wolfram Sang, Xiongfeng Wang.

* tag 'powerpc-5.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (299 commits)
  powerpc/pseries: Make vio and ibmebus initcalls pseries specific
  cxl: Remove dead Kconfig options
  powerpc: Add POWER10 architected mode
  powerpc/dt_cpu_ftrs: Add MMA feature
  powerpc/dt_cpu_ftrs: Enable Prefixed Instructions
  powerpc/dt_cpu_ftrs: Advertise support for ISA v3.1 if selected
  powerpc: Add support for ISA v3.1
  powerpc: Add new HWCAP bits
  powerpc/64s: Don't set FSCR bits in INIT_THREAD
  powerpc/64s: Save FSCR to init_task.thread.fscr after feature init
  powerpc/64s: Don't let DT CPU features set FSCR_DSCR
  powerpc/64s: Don't init FSCR_DSCR in __init_FSCR()
  powerpc/32s: Fix another build failure with CONFIG_PPC_KUAP_DEBUG
  powerpc/module_64: Use special stub for _mcount() with -mprofile-kernel
  powerpc/module_64: Simplify check for -mprofile-kernel ftrace relocations
  powerpc/module_64: Consolidate ftrace code
  powerpc/32: Disable KASAN with pages bigger than 16k
  powerpc/uaccess: Don't set KUEP by default on book3s/32
  powerpc/uaccess: Don't set KUAP by default on book3s/32
  powerpc/8xx: Reduce time spent in allow_user_access() and friends
  ...

1 files changed, 0 insertions, 560 deletions

diff --git a/sound/drivers/pcm-indirect2.c b/sound/drivers/pcm-indirect2.c
deleted file mode 100644
index 4c491d0ff071..000000000000
--- a/sound/drivers/pcm-indirect2.c
+++ /dev/null
@@ -1,560 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * Helper functions for indirect PCM data transfer to a simple FIFO in
- * hardware (small, no possibility to read "hardware io position",
- * updating position done by interrupt, ...)
- *
- *  Copyright (c) by 2007  Joachim Foerster <JOFT@gmx.de>
- *
- *  Based on "pcm-indirect.h" (alsa-driver-1.0.13) by
- *
- *  Copyright (c) by Takashi Iwai <tiwai@suse.de>
- *                   Jaroslav Kysela <perex@suse.cz>
- */
-
-/* snd_printk/d() */
-#include <sound/core.h>
-/* struct snd_pcm_substream, struct snd_pcm_runtime, snd_pcm_uframes_t
- * snd_pcm_period_elapsed() */
-#include <sound/pcm.h>
-
-#include "pcm-indirect2.h"
-
-#ifdef SND_PCM_INDIRECT2_STAT
-/* jiffies */
-#include <linux/jiffies.h>
-
-void snd_pcm_indirect2_stat(struct snd_pcm_substream *substream,
-			    struct snd_pcm_indirect2 *rec)
-{
-	struct snd_pcm_runtime *runtime = substream->runtime;
-	int i;
-	int j;
-	int k;
-	int seconds = (rec->lastbytetime - rec->firstbytetime) / HZ;
-
-	snd_printk(KERN_DEBUG "STAT: mul_elapsed: %u, mul_elapsed_real: %d, "
-		   "irq_occurred: %d\n",
-		   rec->mul_elapsed, rec->mul_elapsed_real, rec->irq_occured);
-	snd_printk(KERN_DEBUG "STAT: min_multiple: %d (irqs/period)\n",
-		   rec->min_multiple);
-	snd_printk(KERN_DEBUG "STAT: firstbytetime: %lu, lastbytetime: %lu, "
-		   "firstzerotime: %lu\n",
-		 rec->firstbytetime, rec->lastbytetime, rec->firstzerotime);
-	snd_printk(KERN_DEBUG "STAT: bytes2hw: %u Bytes => (by runtime->rate) "
-		   "length: %d s\n",
-		 rec->bytes2hw, rec->bytes2hw / 2 / 2 / runtime->rate);
-	snd_printk(KERN_DEBUG "STAT: (by measurement) length: %d => "
-		   "rate: %d Bytes/s = %d Frames/s|Hz\n",
-		   seconds, rec->bytes2hw / seconds,
-		   rec->bytes2hw / 2 / 2 / seconds);
-	snd_printk(KERN_DEBUG
-		   "STAT: zeros2hw: %u = %d ms ~ %d * %d zero copies\n",
-		   rec->zeros2hw, ((rec->zeros2hw / 2 / 2) * 1000) /
-		   runtime->rate,
-		   rec->zeros2hw / (rec->hw_buffer_size / 2),
-		   (rec->hw_buffer_size / 2));
-	snd_printk(KERN_DEBUG "STAT: pointer_calls: %u, lastdifftime: %u\n",
-		   rec->pointer_calls, rec->lastdifftime);
-	snd_printk(KERN_DEBUG "STAT: sw_io: %d, sw_data: %d\n", rec->sw_io,
-		   rec->sw_data);
-	snd_printk(KERN_DEBUG "STAT: byte_sizes[]:\n");
-	k = 0;
-	for (j = 0; j < 8; j++) {
-		for (i = j * 8; i < (j + 1) * 8; i++)
-			if (rec->byte_sizes[i] != 0) {
-				snd_printk(KERN_DEBUG "%u: %u",
-					   i, rec->byte_sizes[i]);
-				k++;
-			}
-		if (((k % 8) == 0) && (k != 0)) {
-			snd_printk(KERN_DEBUG "\n");
-			k = 0;
-		}
-	}
-	snd_printk(KERN_DEBUG "\n");
-	snd_printk(KERN_DEBUG "STAT: zero_sizes[]:\n");
-	for (j = 0; j < 8; j++) {
-		k = 0;
-		for (i = j * 8; i < (j + 1) * 8; i++)
-			if (rec->zero_sizes[i] != 0)
-				snd_printk(KERN_DEBUG "%u: %u",
-					   i, rec->zero_sizes[i]);
-			else
-				k++;
-		if (!k)
-			snd_printk(KERN_DEBUG "\n");
-	}
-	snd_printk(KERN_DEBUG "\n");
-	snd_printk(KERN_DEBUG "STAT: min_adds[]:\n");
-	for (j = 0; j < 8; j++) {
-		if (rec->min_adds[j] != 0)
-			snd_printk(KERN_DEBUG "%u: %u", j, rec->min_adds[j]);
-	}
-	snd_printk(KERN_DEBUG "\n");
-	snd_printk(KERN_DEBUG "STAT: mul_adds[]:\n");
-	for (j = 0; j < 8; j++) {
-		if (rec->mul_adds[j] != 0)
-			snd_printk(KERN_DEBUG "%u: %u", j, rec->mul_adds[j]);
-	}
-	snd_printk(KERN_DEBUG "\n");
-	snd_printk(KERN_DEBUG
-		   "STAT: zero_times_saved: %d, zero_times_notsaved: %d\n",
-		   rec->zero_times_saved, rec->zero_times_notsaved);
-	/* snd_printk(KERN_DEBUG "STAT: zero_times[]\n");
-	i = 0;
-	for (j = 0; j < 3750; j++) {
-		if (rec->zero_times[j] != 0) {
-			snd_printk(KERN_DEBUG "%u: %u", j, rec->zero_times[j]);
-			i++;
-		}
-		if (((i % 8) == 0) && (i != 0))
-			snd_printk(KERN_DEBUG "\n");
-	}
-	snd_printk(KERN_DEBUG "\n"); */
-	return;
-}
-#endif
-
-/*
- * _internal_ helper function for playback/capture transfer function
- */
-static void
-snd_pcm_indirect2_increase_min_periods(struct snd_pcm_substream *substream,
-				       struct snd_pcm_indirect2 *rec,
-				       int isplay, int iscopy,
-				       unsigned int bytes)
-{
-	if (rec->min_periods >= 0) {
-		if (iscopy) {
-			rec->sw_io += bytes;
-			if (rec->sw_io >= rec->sw_buffer_size)
-				rec->sw_io -= rec->sw_buffer_size;
-		} else if (isplay) {
-			/* If application does not write data in multiples of
-			 * a period, move sw_data to the next correctly aligned
-			 * position, so that sw_io can converge to it (in the
-			 * next step).
-			 */
-			if (!rec->check_alignment) {
-				if (rec->bytes2hw %
-				    snd_pcm_lib_period_bytes(substream)) {
-					unsigned bytes2hw_aligned =
-					    (1 +
-					     (rec->bytes2hw /
-					      snd_pcm_lib_period_bytes
-					      (substream))) *
-					    snd_pcm_lib_period_bytes
-					    (substream);
-					rec->sw_data =
-					    bytes2hw_aligned %
-					    rec->sw_buffer_size;
-#ifdef SND_PCM_INDIRECT2_STAT
-					snd_printk(KERN_DEBUG
-						   "STAT: @re-align: aligned "
-						   "bytes2hw to next period "
-						   "size boundary: %d "
-						   "(instead of %d)\n",
-						   bytes2hw_aligned,
-						   rec->bytes2hw);
-					snd_printk(KERN_DEBUG
-						   "STAT: @re-align: sw_data "
-						   "moves to: %d\n",
-						   rec->sw_data);
-#endif
-				}
-				rec->check_alignment = 1;
-			}
-			/* We are at the end and are copying zeros into the
-			 * fifo.
-			 * Now, we have to make sure that sw_io is increased
-			 * until the position of sw_data: Filling the fifo with
-			 * the first zeros means, the last bytes were played.
-			 */
-			if (rec->sw_io != rec->sw_data) {
-				unsigned int diff;
-				if (rec->sw_data > rec->sw_io)
-					diff = rec->sw_data - rec->sw_io;
-				else
-					diff = (rec->sw_buffer_size -
-						rec->sw_io) +
-						rec->sw_data;
-				if (bytes >= diff)
-					rec->sw_io = rec->sw_data;
-				else {
-					rec->sw_io += bytes;
-					if (rec->sw_io >= rec->sw_buffer_size)
-						rec->sw_io -=
-						    rec->sw_buffer_size;
-				}
-			}
-		}
-		rec->min_period_count += bytes;
-		if (rec->min_period_count >= (rec->hw_buffer_size / 2)) {
-			rec->min_periods += (rec->min_period_count /
-					     (rec->hw_buffer_size / 2));
-#ifdef SND_PCM_INDIRECT2_STAT
-			if ((rec->min_period_count /
-			     (rec->hw_buffer_size / 2)) > 7)
-				snd_printk(KERN_DEBUG
-					   "STAT: more than 7 (%d) min_adds "
-					   "at once - too big to save!\n",
-					   (rec->min_period_count /
-					    (rec->hw_buffer_size / 2)));
-			else
-				rec->min_adds[(rec->min_period_count /
-					       (rec->hw_buffer_size / 2))]++;
-#endif
-			rec->min_period_count = (rec->min_period_count %
-						 (rec->hw_buffer_size / 2));
-		}
-	} else if (isplay && iscopy)
-		rec->min_periods = 0;
-}
-
-/*
- * helper function for playback/capture pointer callback
- */
-snd_pcm_uframes_t
-snd_pcm_indirect2_pointer(struct snd_pcm_substream *substream,
-			  struct snd_pcm_indirect2 *rec)
-{
-#ifdef SND_PCM_INDIRECT2_STAT
-	rec->pointer_calls++;
-#endif
-	return bytes_to_frames(substream->runtime, rec->sw_io);
-}
-
-/*
- * _internal_ helper function for playback interrupt callback
- */
-static void
-snd_pcm_indirect2_playback_transfer(struct snd_pcm_substream *substream,
-				    struct snd_pcm_indirect2 *rec,
-				    snd_pcm_indirect2_copy_t copy,
-				    snd_pcm_indirect2_zero_t zero)
-{
-	struct snd_pcm_runtime *runtime = substream->runtime;
-	snd_pcm_uframes_t appl_ptr = runtime->control->appl_ptr;
-
-	/* runtime->control->appl_ptr: position where ALSA will write next time
-	 * rec->appl_ptr: position where ALSA was last time
-	 * diff: obviously ALSA wrote that much bytes into the intermediate
-	 * buffer since we checked last time
-	 */
-	snd_pcm_sframes_t diff = appl_ptr - rec->appl_ptr;
-
-	if (diff) {
-#ifdef SND_PCM_INDIRECT2_STAT
-		rec->lastdifftime = jiffies;
-#endif
-		if (diff < -(snd_pcm_sframes_t) (runtime->boundary / 2))
-			diff += runtime->boundary;
-		/* number of bytes "added" by ALSA increases the number of
-		 * bytes which are ready to "be transferred to HW"/"played"
-		 * Then, set rec->appl_ptr to not count bytes twice next time.
-		 */
-		rec->sw_ready += (int)frames_to_bytes(runtime, diff);
-		rec->appl_ptr = appl_ptr;
-	}
-	if (rec->hw_ready && (rec->sw_ready <= 0)) {
-		unsigned int bytes;
-
-#ifdef SND_PCM_INDIRECT2_STAT
-		if (rec->firstzerotime == 0) {
-			rec->firstzerotime = jiffies;
-			snd_printk(KERN_DEBUG
-				   "STAT: @firstzerotime: mul_elapsed: %d, "
-				   "min_period_count: %d\n",
-				   rec->mul_elapsed, rec->min_period_count);
-			snd_printk(KERN_DEBUG
-				   "STAT: @firstzerotime: sw_io: %d, "
-				   "sw_data: %d, appl_ptr: %u\n",
-				   rec->sw_io, rec->sw_data,
-				   (unsigned int)appl_ptr);
-		}
-		if ((jiffies - rec->firstzerotime) < 3750) {
-			rec->zero_times[(jiffies - rec->firstzerotime)]++;
-			rec->zero_times_saved++;
-		} else
-			rec->zero_times_notsaved++;
-#endif
-		bytes = zero(substream, rec);
-
-#ifdef SND_PCM_INDIRECT2_STAT
-		rec->zeros2hw += bytes;
-		if (bytes < 64)
-			rec->zero_sizes[bytes]++;
-		else
-			snd_printk(KERN_DEBUG
-				   "STAT: %d zero Bytes copied to hardware at "
-				   "once - too big to save!\n",
-				   bytes);
-#endif
-		snd_pcm_indirect2_increase_min_periods(substream, rec, 1, 0,
-						       bytes);
-		return;
-	}
-	while (rec->hw_ready && (rec->sw_ready > 0)) {
-		/* sw_to_end: max. number of bytes that can be read/take from
-		 * the current position (sw_data) in _one_ step
-		 */
-		unsigned int sw_to_end = rec->sw_buffer_size - rec->sw_data;
-
-		/* bytes: number of bytes we have available (for reading) */
-		unsigned int bytes = rec->sw_ready;
-
-		if (sw_to_end < bytes)
-			bytes = sw_to_end;
-		if (!bytes)
-			break;
-
-#ifdef SND_PCM_INDIRECT2_STAT
-		if (rec->firstbytetime == 0)
-			rec->firstbytetime = jiffies;
-		rec->lastbytetime = jiffies;
-#endif
-		/* copy bytes from intermediate buffer position sw_data to the
-		 * HW and return number of bytes actually written
-		 * Furthermore, set hw_ready to 0, if the fifo isn't empty
-		 * now => more could be transferred to fifo
-		 */
-		bytes = copy(substream, rec, bytes);
-		rec->bytes2hw += bytes;
-
-#ifdef SND_PCM_INDIRECT2_STAT
-		if (bytes < 64)
-			rec->byte_sizes[bytes]++;
-		else
-			snd_printk(KERN_DEBUG
-				   "STAT: %d Bytes copied to hardware at once "
-				   "- too big to save!\n",
-				   bytes);
-#endif
-		/* increase sw_data by the number of actually written bytes
-		 * (= number of taken bytes from intermediate buffer)
-		 */
-		rec->sw_data += bytes;
-		if (rec->sw_data == rec->sw_buffer_size)
-			rec->sw_data = 0;
-		/* now sw_data is the position where ALSA is going to write
-		 * in the intermediate buffer next time = position we are going
-		 * to read from next time
-		 */
-
-		snd_pcm_indirect2_increase_min_periods(substream, rec, 1, 1,
-						       bytes);
-
-		/* we read bytes from intermediate buffer, so we need to say
-		 * that the number of bytes ready for transfer are decreased
-		 * now
-		 */
-		rec->sw_ready -= bytes;
-	}
-	return;
-}
-
-/*
- * helper function for playback interrupt routine
- */
-void
-snd_pcm_indirect2_playback_interrupt(struct snd_pcm_substream *substream,
-				     struct snd_pcm_indirect2 *rec,
-				     snd_pcm_indirect2_copy_t copy,
-				     snd_pcm_indirect2_zero_t zero)
-{
-#ifdef SND_PCM_INDIRECT2_STAT
-	rec->irq_occured++;
-#endif
-	/* hardware played some bytes, so there is room again (in fifo) */
-	rec->hw_ready = 1;
-
-	/* don't call ack() now, instead call transfer() function directly
-	 * (normally called by ack() )
-	 */
-	snd_pcm_indirect2_playback_transfer(substream, rec, copy, zero);
-
-	if (rec->min_periods >= rec->min_multiple) {
-#ifdef SND_PCM_INDIRECT2_STAT
-		if ((rec->min_periods / rec->min_multiple) > 7)
-			snd_printk(KERN_DEBUG
-				   "STAT: more than 7 (%d) mul_adds - too big "
-				   "to save!\n",
-				   (rec->min_periods / rec->min_multiple));
-		else
-			rec->mul_adds[(rec->min_periods /
-				       rec->min_multiple)]++;
-		rec->mul_elapsed_real += (rec->min_periods /
-					  rec->min_multiple);
-		rec->mul_elapsed++;
-#endif
-		rec->min_periods = (rec->min_periods % rec->min_multiple);
-		snd_pcm_period_elapsed(substream);
-	}
-}
-
-/*
- * _internal_ helper function for capture interrupt callback
- */
-static void
-snd_pcm_indirect2_capture_transfer(struct snd_pcm_substream *substream,
-				   struct snd_pcm_indirect2 *rec,
-				   snd_pcm_indirect2_copy_t copy,
-				   snd_pcm_indirect2_zero_t null)
-{
-	struct snd_pcm_runtime *runtime = substream->runtime;
-	snd_pcm_uframes_t appl_ptr = runtime->control->appl_ptr;
-	snd_pcm_sframes_t diff = appl_ptr - rec->appl_ptr;
-
-	if (diff) {
-#ifdef SND_PCM_INDIRECT2_STAT
-		rec->lastdifftime = jiffies;
-#endif
-		if (diff < -(snd_pcm_sframes_t) (runtime->boundary / 2))
-			diff += runtime->boundary;
-		rec->sw_ready -= frames_to_bytes(runtime, diff);
-		rec->appl_ptr = appl_ptr;
-	}
-	/* if hardware has something, but the intermediate buffer is full
-	 * => skip contents of buffer
-	 */
-	if (rec->hw_ready && (rec->sw_ready >= (int)rec->sw_buffer_size)) {
-		unsigned int bytes;
-
-#ifdef SND_PCM_INDIRECT2_STAT
-		if (rec->firstzerotime == 0) {
-			rec->firstzerotime = jiffies;
-			snd_printk(KERN_DEBUG "STAT: (capture) "
-				   "@firstzerotime: mul_elapsed: %d, "
-				   "min_period_count: %d\n",
-				   rec->mul_elapsed, rec->min_period_count);
-			snd_printk(KERN_DEBUG "STAT: (capture) "
-				   "@firstzerotime: sw_io: %d, sw_data: %d, "
-				   "appl_ptr: %u\n",
-				   rec->sw_io, rec->sw_data,
-				   (unsigned int)appl_ptr);
-		}
-		if ((jiffies - rec->firstzerotime) < 3750) {
-			rec->zero_times[(jiffies - rec->firstzerotime)]++;
-			rec->zero_times_saved++;
-		} else
-			rec->zero_times_notsaved++;
-#endif
-		bytes = null(substream, rec);
-
-#ifdef SND_PCM_INDIRECT2_STAT
-		rec->zeros2hw += bytes;
-		if (bytes < 64)
-			rec->zero_sizes[bytes]++;
-		else
-			snd_printk(KERN_DEBUG
-				   "STAT: (capture) %d zero Bytes copied to "
-				   "hardware at once - too big to save!\n",
-				   bytes);
-#endif
-		snd_pcm_indirect2_increase_min_periods(substream, rec, 0, 0,
-						       bytes);
-		/* report an overrun */
-		rec->sw_io = SNDRV_PCM_POS_XRUN;
-		return;
-	}
-	while (rec->hw_ready && (rec->sw_ready < (int)rec->sw_buffer_size)) {
-		/* sw_to_end: max. number of bytes that we can write to the
-		 *  intermediate buffer (until it's end)
-		 */
-		size_t sw_to_end = rec->sw_buffer_size - rec->sw_data;
-
-		/* bytes: max. number of bytes, which may be copied to the
-		 *  intermediate buffer without overflow (in _one_ step)
-		 */
-		size_t bytes = rec->sw_buffer_size - rec->sw_ready;
-
-		/* limit number of bytes (for transfer) by available room in
-		 * the intermediate buffer
-		 */
-		if (sw_to_end < bytes)
-			bytes = sw_to_end;
-		if (!bytes)
-			break;
-
-#ifdef SND_PCM_INDIRECT2_STAT
-		if (rec->firstbytetime == 0)
-			rec->firstbytetime = jiffies;
-		rec->lastbytetime = jiffies;
-#endif
-		/* copy bytes from the intermediate buffer (position sw_data)
-		 * to the HW at most and return number of bytes actually copied
-		 * from HW
-		 * Furthermore, set hw_ready to 0, if the fifo is empty now.
-		 */
-		bytes = copy(substream, rec, bytes);
-		rec->bytes2hw += bytes;
-
-#ifdef SND_PCM_INDIRECT2_STAT
-		if (bytes < 64)
-			rec->byte_sizes[bytes]++;
-		else
-			snd_printk(KERN_DEBUG
-				   "STAT: (capture) %d Bytes copied to "
-				   "hardware at once - too big to save!\n",
-				   bytes);
-#endif
-		/* increase sw_data by the number of actually copied bytes from
-		 * HW
-		 */
-		rec->sw_data += bytes;
-		if (rec->sw_data == rec->sw_buffer_size)
-			rec->sw_data = 0;
-
-		snd_pcm_indirect2_increase_min_periods(substream, rec, 0, 1,
-						       bytes);
-
-		/* number of bytes in the intermediate buffer, which haven't
-		 * been fetched by ALSA yet.
-		 */
-		rec->sw_ready += bytes;
-	}
-	return;
-}
-
-/*
- * helper function for capture interrupt routine
- */
-void
-snd_pcm_indirect2_capture_interrupt(struct snd_pcm_substream *substream,
-				    struct snd_pcm_indirect2 *rec,
-				    snd_pcm_indirect2_copy_t copy,
-				    snd_pcm_indirect2_zero_t null)
-{
-#ifdef SND_PCM_INDIRECT2_STAT
-	rec->irq_occured++;
-#endif
-	/* hardware recorded some bytes, so there is something to read from the
-	 * record fifo:
-	 */
-	rec->hw_ready = 1;
-
-	/* don't call ack() now, instead call transfer() function directly
-	 * (normally called by ack() )
-	 */
-	snd_pcm_indirect2_capture_transfer(substream, rec, copy, null);
-
-	if (rec->min_periods >= rec->min_multiple) {
-
-#ifdef SND_PCM_INDIRECT2_STAT
-		if ((rec->min_periods / rec->min_multiple) > 7)
-			snd_printk(KERN_DEBUG
-				   "STAT: more than 7 (%d) mul_adds - "
-				   "too big to save!\n",
-				   (rec->min_periods / rec->min_multiple));
-		else
-			rec->mul_adds[(rec->min_periods /
-				       rec->min_multiple)]++;
-		rec->mul_elapsed_real += (rec->min_periods /
-					  rec->min_multiple);
-		rec->mul_elapsed++;
-#endif
-		rec->min_periods = (rec->min_periods % rec->min_multiple);
-		snd_pcm_period_elapsed(substream);
-	}
-}