From 1c53e7253ed8769a00afa0f06777d731dbe1ba6f Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Fri, 2 May 2014 18:14:42 +0200 Subject: [PATCH] ALSA: usb-audio: Save mixer status only once at suspend The suspend callback of usb-audio driver may be called multiple times per suspend when multiple USB interfaces are bound to a single sound card instance. In such a case, it's superfluous to save the mixer values multiple times. This patch fixes it by checking the counter. Signed-off-by: Takashi Iwai --- Reading git-format-patch failed