Commit 4b609f1e authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge tag 'sound-5.1-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound 

Pull sound fixes from Takashi Iwai:
 "Two core fixes for long-standing bugs for the races at concurrent
  device creation and deletion that were (unsurprisingly) spotted by
  syzkaller with usb-fuzzer.

  The rest are usual small HD-audio fixes"

* tag 'sound-5.1-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: hda/realtek - add two more pin configuration sets to quirk table
  ALSA: core: Fix card races between register and disconnect
  ALSA: info: Fix racy addition/deletion of nodes
  ALSA: hda: Initialize power_state field properly
parents e899cc3b b26e36b7

sound/core/info.c

+10 −2
Original line number Diff line number Diff line
@@ -713,8 +713,11 @@ snd_info_create_entry(const char *name, struct snd_info_entry *parent, 
	INIT_LIST_HEAD(&entry->list);

	entry->parent = parent;

	entry->module = module;

	if (parent)

	if (parent) {

		mutex_lock(&parent->access);

		list_add_tail(&entry->list, &parent->children);

		mutex_unlock(&parent->access);

	}

	return entry;

}
@@ -792,7 +795,12 @@ void snd_info_free_entry(struct snd_info_entry * entry) 
	list_for_each_entry_safe(p, n, &entry->children, list)

		snd_info_free_entry(p);



	p = entry->parent;

	if (p) {

		mutex_lock(&p->access);

		list_del(&entry->list);

		mutex_unlock(&p->access);

	}

	kfree(entry->name);

	if (entry->private_free)

		entry->private_free(entry);

sound/core/init.c

+9 −9
Original line number Diff line number Diff line
@@ -382,14 +382,7 @@ int snd_card_disconnect(struct snd_card *card) 
	card->shutdown = 1;

	spin_unlock(&card->files_lock);



	/* phase 1: disable fops (user space) operations for ALSA API */

	mutex_lock(&snd_card_mutex);

	snd_cards[card->number] = NULL;

	clear_bit(card->number, snd_cards_lock);

	mutex_unlock(&snd_card_mutex);

	

	/* phase 2: replace file->f_op with special dummy operations */

	

	/* replace file->f_op with special dummy operations */

	spin_lock(&card->files_lock);

	list_for_each_entry(mfile, &card->files_list, list) {

		/* it's critical part, use endless loop */
@@ -405,7 +398,7 @@ int snd_card_disconnect(struct snd_card *card) 
	}

	spin_unlock(&card->files_lock);	



	/* phase 3: notify all connected devices about disconnection */

	/* notify all connected devices about disconnection */

	/* at this point, they cannot respond to any calls except release() */



#if IS_ENABLED(CONFIG_SND_MIXER_OSS)
@@ -421,6 +414,13 @@ int snd_card_disconnect(struct snd_card *card) 
		device_del(&card->card_dev);

		card->registered = false;

	}



	/* disable fops (user space) operations for ALSA API */

	mutex_lock(&snd_card_mutex);

	snd_cards[card->number] = NULL;

	clear_bit(card->number, snd_cards_lock);

	mutex_unlock(&snd_card_mutex);



#ifdef CONFIG_PM

	wake_up(&card->power_sleep);

#endif

sound/pci/hda/hda_codec.c

+1 −0
Original line number Diff line number Diff line
@@ -969,6 +969,7 @@ int snd_hda_codec_device_new(struct hda_bus *bus, struct snd_card *card, 


	/* power-up all before initialization */

	hda_set_power_state(codec, AC_PWRST_D0);

	codec->core.dev.power.power_state = PMSG_ON;



	snd_hda_codec_proc_new(codec);

sound/pci/hda/patch_realtek.c

+6 −0
Original line number Diff line number Diff line
@@ -7266,6 +7266,8 @@ static const struct snd_hda_pin_quirk alc269_pin_fixup_tbl[] = { 
		{0x12, 0x90a60140},

		{0x14, 0x90170150},

		{0x21, 0x02211020}),

	SND_HDA_PIN_QUIRK(0x10ec0236, 0x1028, "Dell", ALC255_FIXUP_DELL1_MIC_NO_PRESENCE,

		{0x21, 0x02211020}),

	SND_HDA_PIN_QUIRK(0x10ec0255, 0x1028, "Dell", ALC255_FIXUP_DELL2_MIC_NO_PRESENCE,

		{0x14, 0x90170110},

		{0x21, 0x02211020}),
@@ -7376,6 +7378,10 @@ static const struct snd_hda_pin_quirk alc269_pin_fixup_tbl[] = { 
		{0x21, 0x0221101f}),

	SND_HDA_PIN_QUIRK(0x10ec0256, 0x1028, "Dell", ALC255_FIXUP_DELL1_MIC_NO_PRESENCE,

		ALC256_STANDARD_PINS),

	SND_HDA_PIN_QUIRK(0x10ec0256, 0x1028, "Dell", ALC255_FIXUP_DELL1_MIC_NO_PRESENCE,

		{0x14, 0x90170110},

		{0x1b, 0x01011020},

		{0x21, 0x0221101f}),

	SND_HDA_PIN_QUIRK(0x10ec0256, 0x1043, "ASUS", ALC256_FIXUP_ASUS_MIC,

		{0x14, 0x90170110},

		{0x1b, 0x90a70130},

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