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Diffstat (limited to 'sound/usb/card.c')
-rw-r--r--sound/usb/card.c29
1 files changed, 20 insertions, 9 deletions
diff --git a/sound/usb/card.c b/sound/usb/card.c
index a5ed11ea1145..26268ffb8274 100644
--- a/sound/usb/card.c
+++ b/sound/usb/card.c
@@ -742,6 +742,18 @@ get_alias_quirk(struct usb_device *dev, unsigned int id)
return NULL;
}
+/* register card if we reach to the last interface or to the specified
+ * one given via option
+ */
+static int try_to_register_card(struct snd_usb_audio *chip, int ifnum)
+{
+ if (check_delayed_register_option(chip) == ifnum ||
+ chip->last_iface == ifnum ||
+ usb_interface_claimed(usb_ifnum_to_if(chip->dev, chip->last_iface)))
+ return snd_card_register(chip->card);
+ return 0;
+}
+
/*
* probe the active usb device
*
@@ -880,15 +892,9 @@ static int usb_audio_probe(struct usb_interface *intf,
chip->need_delayed_register = false; /* clear again */
}
- /* register card if we reach to the last interface or to the specified
- * one given via option
- */
- if (check_delayed_register_option(chip) == ifnum ||
- usb_interface_claimed(usb_ifnum_to_if(dev, chip->last_iface))) {
- err = snd_card_register(chip->card);
- if (err < 0)
- goto __error;
- }
+ err = try_to_register_card(chip, ifnum);
+ if (err < 0)
+ goto __error_no_register;
if (chip->quirk_flags & QUIRK_FLAG_SHARE_MEDIA_DEVICE) {
/* don't want to fail when snd_media_device_create() fails */
@@ -907,6 +913,11 @@ static int usb_audio_probe(struct usb_interface *intf,
return 0;
__error:
+ /* in the case of error in secondary interface, still try to register */
+ if (chip)
+ try_to_register_card(chip, ifnum);
+
+ __error_no_register:
if (chip) {
/* chip->active is inside the chip->card object,
* decrement before memory is possibly returned.