[PATCH] ALSA fixes #1

Jaroslav Kysela (perex@suse.cz)
Thu, 3 Oct 2002 12:09:22 +0200 (CEST)

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Reply: Jeff Garzik: "Re: [PATCH] ALSA fixes #1"

Hi all,

this is the first patch which tries to solve major compilation /
usage trouble for ALSA in 2.5.

Jaroslav

You can import this changeset into BK by piping this whole message to:
'| bk receive [path to repository]' or apply the patch as usual.

===================================================================

ChangeSet@1.676, 2002-10-03 12:03:21+02:00, perex@suse.cz
ALSA compilation update
- save_flags/cli/restore_flags removal
- updated USB code for 2.5
- fixed SPARC configuration
- fixed spinlock/sleep race in PCM midlevel

diff -Nru a/drivers/pnp/isapnp.c b/drivers/pnp/isapnp.c
--- a/drivers/pnp/isapnp.c Thu Oct 3 12:05:41 2002
+++ b/drivers/pnp/isapnp.c Thu Oct 3 12:05:41 2002
@@ -1048,7 +1048,7 @@
isapnp_wait();
isapnp_key();
isapnp_wake(csn);
-#if 1
+#if 0
/* to avoid malfunction when the isapnptools package is used */
/* we must set RDP to our value again */
/* it is possible to set RDP only in the isolation phase */
diff -Nru a/include/sound/snd_wavefront.h b/include/sound/snd_wavefront.h
--- a/include/sound/snd_wavefront.h Thu Oct 3 12:05:41 2002
+++ b/include/sound/snd_wavefront.h Thu Oct 3 12:05:41 2002
@@ -91,6 +91,7 @@
int samples_used; /* how many */
char interrupts_are_midi; /* h/w MPU interrupts enabled ? */
char rom_samples_rdonly; /* can we write on ROM samples */
+ spinlock_t irq_lock;
wait_queue_head_t interrupt_sleeper;
snd_wavefront_midi_t midi; /* ICS2115 MIDI interface */
};
diff -Nru a/sound/Config.in b/sound/Config.in
--- a/sound/Config.in Thu Oct 3 12:05:41 2002
+++ b/sound/Config.in Thu Oct 3 12:05:41 2002
@@ -36,11 +36,10 @@
if [ "$CONFIG_SND" != "n" -a "$CONFIG_USB" != "n" ]; then
source sound/usb/Config.in
fi
-if [ "$CONFIG_SND" != "n" -a "$CONFIG_SPARC32" = "y" ]; then
- source sound/sparc/Config.in
-fi
-if [ "$CONFIG_SND" != "n" -a "$CONFIG_SPARC64" = "y" ]; then
- source sound/sparc/Config.in
+if [ "$CONFIG_SND" != "n" ]; then
+ if [ "$CONFIG_SPARC32" = "y" -o "$CONFIG_SPARC64" = "y" ]; then
+ source sound/sparc/Config.in
+ fi
fi

endmenu
diff -Nru a/sound/core/oss/pcm_oss.c b/sound/core/oss/pcm_oss.c
--- a/sound/core/oss/pcm_oss.c Thu Oct 3 12:05:41 2002
+++ b/sound/core/oss/pcm_oss.c Thu Oct 3 12:05:41 2002
@@ -1851,8 +1851,8 @@
mask = 0;
if (psubstream != NULL) {
snd_pcm_runtime_t *runtime = psubstream->runtime;
- spin_lock_irq(&runtime->lock);
poll_wait(file, &runtime->sleep, wait);
+ spin_lock_irq(&runtime->lock);
if (runtime->status->state != SNDRV_PCM_STATE_DRAINING &&
(runtime->status->state != SNDRV_PCM_STATE_RUNNING ||
snd_pcm_oss_playback_ready(psubstream)))
@@ -1861,8 +1861,8 @@
}
if (csubstream != NULL) {
snd_pcm_runtime_t *runtime = csubstream->runtime;
- spin_lock_irq(&runtime->lock);
poll_wait(file, &runtime->sleep, wait);
+ spin_lock_irq(&runtime->lock);
if (runtime->status->state != SNDRV_PCM_STATE_RUNNING ||
snd_pcm_oss_capture_ready(csubstream))
mask |= POLLIN | POLLRDNORM;
diff -Nru a/sound/core/pcm_native.c b/sound/core/pcm_native.c
--- a/sound/core/pcm_native.c Thu Oct 3 12:05:41 2002
+++ b/sound/core/pcm_native.c Thu Oct 3 12:05:41 2002
@@ -947,7 +947,10 @@
static int snd_pcm_reset(snd_pcm_substream_t *substream)
{
int res;
+
+ spin_lock_irq(&substream->runtime->lock);
_SND_PCM_ACTION(reset, substream, 0, res, 0);
+ spin_unlock_irq(&substream->runtime->lock);
return res;
}

@@ -984,6 +987,7 @@
{
int res;
snd_card_t *card = substream->pcm->card;
+
snd_power_lock(card);
while (snd_power_get_state(card) != SNDRV_CTL_POWER_D0) {
if (substream->ffile->f_flags & O_NONBLOCK) {
@@ -993,7 +997,9 @@
snd_power_wait(card);
}

+ spin_lock_irq(&substream->runtime->lock);
_SND_PCM_ACTION(prepare, substream, 0, res, 0);
+ spin_unlock_irq(&substream->runtime->lock);

_power_unlock:
snd_power_unlock(card);
@@ -2051,21 +2057,9 @@
case SNDRV_PCM_IOCTL_CHANNEL_INFO:
return snd_pcm_channel_info(substream, (snd_pcm_channel_info_t *) arg);
case SNDRV_PCM_IOCTL_PREPARE:
- {
- int res;
- spin_lock_irq(&substream->runtime->lock);
- res = snd_pcm_prepare(substream);
- spin_unlock_irq(&substream->runtime->lock);
- return res;
- }
+ return snd_pcm_prepare(substream);
case SNDRV_PCM_IOCTL_RESET:
- {
- int res;
- spin_lock_irq(&substream->runtime->lock);
- res = snd_pcm_reset(substream);
- spin_unlock_irq(&substream->runtime->lock);
- return res;
- }
+ return snd_pcm_reset(substream);
case SNDRV_PCM_IOCTL_START:
{
int res;
diff -Nru a/sound/isa/sgalaxy.c b/sound/isa/sgalaxy.c
--- a/sound/isa/sgalaxy.c Thu Oct 3 12:05:41 2002
+++ b/sound/isa/sgalaxy.c Thu Oct 3 12:05:41 2002
@@ -26,6 +26,7 @@
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/time.h>
+#include <linux/irq.h>
#include <sound/core.h>
#include <sound/sb.h>
#include <sound/ad1848.h>
@@ -117,8 +118,6 @@
static int dma_bits[] = {1, 2, 0, 3};
int tmp, tmp1;

- unsigned long flags;
-
if ((tmp = inb(port + 3)) == 0xff)
{
snd_printdd("I/O address dead (0x%lx)\n", port);
@@ -140,20 +139,18 @@
snd_printdd("sgalaxy - setting up IRQ/DMA for WSS\n");
#endif

- save_flags(flags);
- cli();
+ /* FIXME: this is really bogus --jk */
+ /* the irq line is not allocated (thus locked) for this device at the moment */
+ disable_irq(irq);

/* initialize IRQ for WSS codec */
tmp = interrupt_bits[irq % 16];
- if (tmp < 0) {
- restore_flags(flags);
+ if (tmp < 0)
return -EINVAL;
- }
outb(tmp | 0x40, port);
tmp1 = dma_bits[dma % 4];
outb(tmp | tmp1, port);

- restore_flags(flags);
return 0;
}

diff -Nru a/sound/isa/wavefront/wavefront.c b/sound/isa/wavefront/wavefront.c
--- a/sound/isa/wavefront/wavefront.c Thu Oct 3 12:05:41 2002
+++ b/sound/isa/wavefront/wavefront.c Thu Oct 3 12:05:41 2002
@@ -495,6 +495,7 @@
}
acard = (snd_wavefront_card_t *)card->private_data;
acard->wavefront.irq = -1;
+ spin_lock_init(&acard->wavefront.irq_lock);
init_waitqueue_head(&acard->wavefront.interrupt_sleeper);
spin_lock_init(&acard->wavefront.midi.open);
spin_lock_init(&acard->wavefront.midi.virtual);
diff -Nru a/sound/isa/wavefront/wavefront_synth.c b/sound/isa/wavefront/wavefront_synth.c
--- a/sound/isa/wavefront/wavefront_synth.c Thu Oct 3 12:05:41 2002
+++ b/sound/isa/wavefront/wavefront_synth.c Thu Oct 3 12:05:41 2002
@@ -1705,9 +1705,11 @@
return;
}

+ spin_lock(&dev->irq_lock);
dev->irq_ok = 1;
dev->irq_cnt++;
- wake_up_interruptible (&dev->interrupt_sleeper);
+ spin_unlock(&dev->irq_lock);
+ wake_up(&dev->interrupt_sleeper);
}

/* STATUS REGISTER
@@ -1755,14 +1757,20 @@
int val, int port, int timeout)

{
- unsigned long flags;
+ wait_queue_t wait;

- save_flags (flags);
- cli();
+ init_waitqueue_entry(&wait, current);
+ spin_lock_irq(&dev->irq_lock);
+ add_wait_queue(&dev->interrupt_sleeper, &wait);
dev->irq_ok = 0;
outb (val,port);
- interruptible_sleep_on_timeout (&dev->interrupt_sleeper, timeout);
- restore_flags (flags);
+ spin_unlock_irq(&dev->irq_lock);
+ while (1) {
+ if ((timeout = schedule_timeout(timeout)) == 0)
+ return;
+ if (dev->irq_ok)
+ return;
+ }
}

static int __init
diff -Nru a/sound/pci/ali5451/ali5451.c b/sound/pci/ali5451/ali5451.c
--- a/sound/pci/ali5451/ali5451.c Thu Oct 3 12:05:41 2002
+++ b/sound/pci/ali5451/ali5451.c Thu Oct 3 12:05:41 2002
@@ -1871,7 +1871,6 @@
ali_t *chip = snd_magic_cast(ali_t, pci_get_drvdata(dev), return);
#endif
ali_image_t *im;
- unsigned long flags;
int i, j;

im = chip->image;
@@ -1882,8 +1881,7 @@
return;
#endif

- save_flags(flags);
- cli();
+ spin_lock_irq(&chip->reg_lock);

im->regs[ALI_MISCINT >> 2] = inl(ALI_REG(chip, ALI_MISCINT));
// im->regs[ALI_START >> 2] = inl(ALI_REG(chip, ALI_START));
@@ -1907,7 +1905,7 @@
// stop all HW channel
outl(0xffffffff, ALI_REG(chip, ALI_STOP));

- restore_flags(flags);
+ spin_unlock_irq(&chip->reg_lock);
#ifndef PCI_OLD_SUSPEND
return 0;
#endif
@@ -1925,7 +1923,6 @@
ali_t *chip = snd_magic_cast(ali_t, pci_get_drvdata(dev), return);
#endif
ali_image_t *im;
- unsigned long flags;
int i, j;

im = chip->image;
@@ -1938,8 +1935,7 @@

pci_enable_device(chip->pci);

- save_flags(flags);
- cli();
+ spin_lock_irq(&chip->reg_lock);

for (i = 0; i < ALI_CHANNELS; i++) {
outb(i, ALI_REG(chip, ALI_GC_CIR));
@@ -1960,7 +1956,7 @@
// restore IRQ enable bits
outl(im->regs[ALI_MISCINT >> 2], ALI_REG(chip, ALI_MISCINT));

- restore_flags(flags);
+ spin_unlock_irq(&chip->reg_lock);
#ifndef PCI_OLD_SUSPEND
return 0;
#endif
diff -Nru a/sound/pci/cs46xx/dsp_spos.c b/sound/pci/cs46xx/dsp_spos.c
--- a/sound/pci/cs46xx/dsp_spos.c Thu Oct 3 12:05:41 2002
+++ b/sound/pci/cs46xx/dsp_spos.c Thu Oct 3 12:05:41 2002
@@ -1595,8 +1595,7 @@
ins->spdif_in_src,
SCB_ON_PARENT_SUBLIST_SCB);

- save_flags(flags);
- cli();
+ spin_lock_irq(&chip->reg_lock);

/* reset SPDIF input sample buffer pointer */
snd_cs46xx_poke (chip, (SPDIFI_SCB_INST + 0x0c) << 2,
@@ -1609,7 +1608,7 @@
/* restore SPDIF input volume */
snd_cs46xx_poke(chip, (ASYNCRX_SCB_ADDR + 0xE) << 2, ins->spdif_input_volume);
snd_cs46xx_poke(chip, (ASYNCRX_SCB_ADDR + 0xF) << 2, ins->spdif_input_volume);
- restore_flags(flags);
+ spin_unlock_irq(&chip->reg_lock);

/* set SPDIF input sample rate and unmute
NOTE: only 48khz support for SPDIF input this time */
diff -Nru a/sound/pci/cs46xx/dsp_spos_scb_lib.c b/sound/pci/cs46xx/dsp_spos_scb_lib.c
--- a/sound/pci/cs46xx/dsp_spos_scb_lib.c Thu Oct 3 12:05:41 2002
+++ b/sound/pci/cs46xx/dsp_spos_scb_lib.c Thu Oct 3 12:05:41 2002
@@ -1426,14 +1426,10 @@
src->parent_scb_ptr = parent_scb;

/* update entry in DSP RAM */
- spin_lock_irqsave(&chip->reg_lock, flags);
snd_cs46xx_poke(chip,
(parent_scb->address + SCBsubListPtr) << 2,
(parent_scb->sub_list_ptr->address << 0x10) |
(parent_scb->next_scb_ptr->address));
-
-
- spin_unlock_irqrestore(&chip->reg_lock, flags);

return 0;
}
diff -Nru a/sound/usb/usbaudio.c b/sound/usb/usbaudio.c
--- a/sound/usb/usbaudio.c Thu Oct 3 12:05:41 2002
+++ b/sound/usb/usbaudio.c Thu Oct 3 12:05:41 2002
@@ -1292,9 +1292,15 @@
* entry point for linux usb interface
*/

-static void * usb_audio_probe(struct usb_device *dev, unsigned int ifnum,
+#ifndef OLD_USB
+static int usb_audio_probe(struct usb_interface *intf,
+ const struct usb_device_id *id);
+static void usb_audio_disconnect(struct usb_interface *intf);
+#else
+static void * usb_audio_probe(usb_device *dev, unsigned int ifnum,
const struct usb_device_id *id);
static void usb_audio_disconnect(struct usb_device *dev, void *ptr);
+#endif

static struct usb_device_id usb_audio_ids [] = {
#include "usbquirks.h"
@@ -1310,7 +1316,9 @@
.name = "snd-usb-audio",
.probe = usb_audio_probe,
.disconnect = usb_audio_disconnect,
+#ifdef OLD_USB
.driver_list = LIST_HEAD_INIT(usb_audio_driver.driver_list),
+#endif
.id_table = usb_audio_ids,
};

@@ -2042,9 +2050,18 @@
* only at the first time. the successive calls of this function will
* append the pcm interface to the corresponding card.
*/
+#ifndef OLD_USB
+static int usb_audio_probe(struct usb_interface *intf,
+ const struct usb_device_id *id)
+#else
static void *usb_audio_probe(struct usb_device *dev, unsigned int ifnum,
const struct usb_device_id *id)
+#endif
{
+#ifndef OLD_USB
+ struct usb_device *dev = interface_to_usbdev(intf);
+ int ifnum = intf->altsetting->bInterfaceNumber;
+#endif
struct usb_config_descriptor *config = dev->actconfig;
const snd_usb_audio_quirk_t *quirk = (const snd_usb_audio_quirk_t *)id->driver_info;
unsigned char *buffer;
@@ -2054,17 +2071,17 @@
snd_usb_audio_t *chip;

if (quirk && ifnum != quirk->ifnum)
- return NULL;
+ goto __err_val;

if (usb_set_configuration(dev, config->bConfigurationValue) < 0) {
snd_printk(KERN_ERR "cannot set configuration (value 0x%x)\n", config->bConfigurationValue);
- return NULL;
+ goto __err_val;
}

index = dev->actconfig - config;
buflen = alloc_desc_buffer(dev, index, &buffer);
if (buflen <= 0)
- return NULL;
+ goto __err_val;

/*
* found a config. now register to ALSA
@@ -2126,12 +2143,21 @@
chip->num_interfaces++;
up(&register_mutex);
kfree(buffer);
+#ifndef OLD_USB
+ return 0;
+#else
return chip;
+#endif

__error:
up(&register_mutex);
kfree(buffer);
+ __err_val:
+#ifndef OLD_USB
+ return -EIO;
+#else
return NULL;
+#endif
}

@@ -2139,8 +2165,15 @@
* we need to take care of counter, since disconnection can be called also
* many times as well as usb_audio_probe().
*/
+#ifndef OLD_USB
+static void usb_audio_disconnect(struct usb_interface *intf)
+#else
static void usb_audio_disconnect(struct usb_device *dev, void *ptr)
+#endif
{
+#ifndef OLD_USB
+ void *ptr = dev_get_drvdata(&intf->dev);
+#endif
snd_usb_audio_t *chip;

if (ptr == (void *)-1)
diff -Nru a/sound/usb/usbmidi.c b/sound/usb/usbmidi.c
--- a/sound/usb/usbmidi.c Thu Oct 3 12:05:41 2002
+++ b/sound/usb/usbmidi.c Thu Oct 3 12:05:41 2002
@@ -479,6 +479,22 @@
snd_magic_kfree(ep);
}

+#ifndef OLD_USB
+/* this code is not exported from USB core anymore */
+struct usb_interface *local_usb_ifnum_to_if(struct usb_device *dev, unsigned ifnum)
+{
+ int i;
+
+ for (i = 0; i < dev->actconfig->bNumInterfaces; i++)
+ if (dev->actconfig->interface[i].altsetting[0].bInterfaceNumber == ifnum)
+ return &dev->actconfig->interface[i];
+
+ return NULL;
+}
+#else
+#define local_usb_ifnum_to_if usb_ifnum_to_if
+#endif
+
/*
* For Roland devices, use the alternate setting which uses interrupt
* transfers for input.
@@ -491,7 +507,7 @@

if (umidi->chip->dev->descriptor.idVendor != 0x0582)
return NULL;
- intf = usb_ifnum_to_if(umidi->chip->dev, umidi->ifnum);
+ intf = local_usb_ifnum_to_if(umidi->chip->dev, umidi->ifnum);
if (!intf || intf->num_altsetting != 2)
return NULL;

@@ -803,7 +819,7 @@

memset(endpoints, 0, sizeof(*endpoints) * MIDI_MAX_ENDPOINTS);

- intf = usb_ifnum_to_if(umidi->chip->dev, umidi->ifnum);
+ intf = local_usb_ifnum_to_if(umidi->chip->dev, umidi->ifnum);
if (!intf)
return -ENXIO;
intfd = &intf->altsetting[0];
@@ -862,7 +878,7 @@
usb_endpoint_descriptor_t* epd;

if (endpoint->epnum == -1) {
- intf = usb_ifnum_to_if(umidi->chip->dev, umidi->ifnum);
+ intf = local_usb_ifnum_to_if(umidi->chip->dev, umidi->ifnum);
if (!intf || intf->num_altsetting < 1)
return -ENOENT;
intfd = intf->altsetting;
diff -Nru a/sound/usb/usbmixer.c b/sound/usb/usbmixer.c
--- a/sound/usb/usbmixer.c Thu Oct 3 12:05:41 2002
+++ b/sound/usb/usbmixer.c Thu Oct 3 12:05:41 2002
@@ -60,7 +60,7 @@
unsigned char *buffer;
unsigned int buflen;
unsigned int ctrlif;
- unsigned long unitbitmap[32/sizeof(unsigned long)];
+ DECLARE_BITMAP(unitbitmap, 32*32);
usb_audio_term_t oterm;
};

@@ -1252,7 +1252,7 @@
{
unsigned char *p1;

- if (test_and_set_bit(unitid, &state->unitbitmap))
+ if (test_and_set_bit(unitid, state->unitbitmap))
return 0; /* the unit already visited */

p1 = find_audio_control_unit(state, unitid);
@@ -1302,7 +1302,7 @@
while ((desc = snd_usb_find_csint_desc(buffer, buflen, desc, OUTPUT_TERMINAL, ctrlif, -1)) != NULL) {
if (desc[0] < 9)
continue; /* invalid descriptor? */
- set_bit(desc[3], &state.unitbitmap); /* mark terminal ID as visited */
+ set_bit(desc[3], state.unitbitmap); /* mark terminal ID as visited */
state.oterm.id = desc[3];
state.oterm.type = combine_word(&desc[4]);
state.oterm.name = desc[8];

===================================================================

This BitKeeper patch contains the following changesets:
1.676
## Wrapped with gzip_uu ##

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`
end

-----
Jaroslav Kysela <perex@suse.cz>
Linux Kernel Sound Maintainer
ALSA Project http://www.alsa-project.org
SuSE Linux http://www.suse.com

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