Commit 5b517854 authored by Takashi Iwai's avatar Takashi Iwai
Browse files

ALSA: usb-audio: Add quirk_flags module option 

This patch adds a new module option, quirk_flags, for allowing user to
try some additional device-specific quirk behavior more easily.
When this option is set to non-zero, it overrides the quirk_flags, and
the specific workaround is applied.

Link: https://lore.kernel.org/r/20210729074404.19728-5-tiwai@suse.de


Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent 68e851ee

sound/usb/card.c

+7 −1
Original line number Diff line number Diff line
@@ -71,6 +71,7 @@ static bool autoclock = true; 
static char *quirk_alias[SNDRV_CARDS];

static char *delayed_register[SNDRV_CARDS];

static bool implicit_fb[SNDRV_CARDS];

static unsigned int quirk_flags[SNDRV_CARDS];



bool snd_usb_use_vmalloc = true;

bool snd_usb_skip_validation;
@@ -98,6 +99,8 @@ module_param_array(delayed_register, charp, NULL, 0444); 
MODULE_PARM_DESC(delayed_register, "Quirk for delayed registration, given by id:iface, e.g. 0123abcd:4.");

module_param_array(implicit_fb, bool, NULL, 0444);

MODULE_PARM_DESC(implicit_fb, "Apply generic implicit feedback sync mode.");

module_param_array(quirk_flags, uint, NULL, 0444);

MODULE_PARM_DESC(quirk_flags, "Driver quirk bit flags.");

module_param_named(use_vmalloc, snd_usb_use_vmalloc, bool, 0444);

MODULE_PARM_DESC(use_vmalloc, "Use vmalloc for PCM intermediate buffers (default: yes).");

module_param_named(skip_validation, snd_usb_skip_validation, bool, 0444);
@@ -631,6 +634,9 @@ static int snd_usb_audio_create(struct usb_interface *intf, 
	INIT_LIST_HEAD(&chip->midi_list);

	INIT_LIST_HEAD(&chip->mixer_list);



	if (quirk_flags[idx])

		chip->quirk_flags = quirk_flags[idx];

	else

		snd_usb_init_quirk_flags(chip);



	card->private_free = snd_usb_audio_free;