• Takashi Iwai's avatar
    ALSA: usb-audio: Fix deadlocks at resuming · 1ee23fe0
    Takashi Iwai authored
    The recent addition of the USB audio mixer suspend/resume may lead to
    deadlocks when the driver tries to call usb_autopm_get_interface()
    recursively, since the function tries to sync with the finish of the
    other calls.  For avoiding it, introduce a flag indicating the resume
    operation and avoids the recursive usb_autopm_get_interface() calls
    during the resume.
    Reported-and-tested-by: default avatarBryan Quigley <gquigs@gmail.com>
    Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
    1ee23fe0
card.c 20.3 KB