linux-kernel - [PATCH 4.6 175/203] ALSA: usb-audio: Fix quirks code is not called

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Date:	Mon, 25 Jul 2016 13:56:30 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Kazuki Oikawa <k@...w.org>,
	Takashi Sakamoto <o-takashi@...amocchi.jp>,
	Takashi Iwai <tiwai@...e.de>
Subject: [PATCH 4.6 175/203] ALSA: usb-audio: Fix quirks code is not called

4.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Kazuki Oikawa <k@...w.org>

commit 76df52969711ae3725a98f26fbbc6a349803dcbf upstream.

snd_usb_{set_interface,ctl_msg}_quirk checks chip->usb_id to need
calling a quirks code. But existed code path that not calling
dev_set_drvdata in usb_audio_probe.

Fixes: 79289e24194a ("ALSA: usb-audio: Refer to chip->usb_id for quirks and MIDI creation")
Signed-off-by: Kazuki Oikawa <k@...w.org>
Reviewed-by: Takashi Sakamoto <o-takashi@...amocchi.jp>
Tested-by: Takashi Sakamoto <o-takashi@...amocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@...e.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 sound/usb/card.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/sound/usb/card.c
+++ b/sound/usb/card.c
@@ -552,7 +552,6 @@ static int usb_audio_probe(struct usb_in
 				goto __error;
 			}
 			chip = usb_chip[i];
-			dev_set_drvdata(&dev->dev, chip);
 			atomic_inc(&chip->active); /* avoid autopm */
 			break;
 		}
@@ -578,6 +577,7 @@ static int usb_audio_probe(struct usb_in
 			goto __error;
 		}
 	}
+	dev_set_drvdata(&dev->dev, chip);
 
 	/*
 	 * For devices with more than one control interface, we assume the