From 8fc04d468cc3e98099140ef3d76339f10e7ec30a Mon Sep 17 00:00:00 2001 From: Thomas Pfaff Date: Thu, 22 Sep 2011 18:26:06 +0200 Subject: ALSA: usb-audio - clear chip->probing on error exit commit 362e4e49abe53e89d87455dfcd7c1bbaf08a839d upstream. The Terratec Aureon 5.1 USB sound card support is broken since kernel 2.6.39. 2.6.39 introduced power management support for USB sound cards that added a probing flag in struct snd_usb_audio. During the probe of the card it gives following error message : usb 7-2: new full speed USB device number 2 using uhci_hcd cannot find UAC_HEADER snd-usb-audio: probe of 7-2:1.3 failed with error -5 input: USB Audio as /devices/pci0000:00/0000:00:1d.1/usb7/7-2/7-2:1.3/input/input6 generic-usb 0003:0CCD:0028.0001: input: USB HID v1.00 Device [USB Audio] on usb-0000:00:1d.1-2/input3 I can not comment about that "cannot find UAC_HEADER" error, but until 2.6.38 the card worked anyway. With 2.6.39 chip->probing remains 1 on error exit, and any later ioctl stops in snd_usb_autoresume with -ENODEV. Signed-off-by: Thomas Pfaff Signed-off-by: Takashi Iwai Signed-off-by: Greg Kroah-Hartman --- sound/usb/card.c | 1 + 1 file changed, 1 insertion(+) diff --git a/sound/usb/card.c b/sound/usb/card.c index 220c616..29b3094 100644 --- a/sound/usb/card.c +++ b/sound/usb/card.c @@ -531,6 +531,7 @@ static void *snd_usb_audio_probe(struct usb_device *dev, __error: if (chip && !chip->num_interfaces) snd_card_free(chip->card); + chip->probing = 0; mutex_unlock(®ister_mutex); __err_val: return NULL; -- cgit v1.1