Pierre-Louis Bossart 293385739d ALSA: hda: hdac_ext_stream: fix potential locking issues ... commit 868ddfcef3 upstream. The code for hdac_ext_stream seems inherited from hdac_stream, and similar locking issues are present: the use of the bus->reg_lock spinlock is inconsistent, with only writes to specific fields being protected. Apply similar fix as in hdac_stream by protecting all accesses to 'link_locked' and 'decoupled' fields, with a new helper snd_hdac_ext_stream_decouple_locked() added to simplify code changes. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/20210924192417.169243-4-pierre-louis.bossart@linux.intel.com Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2021-11-26 10:47:23 +01:00
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hdac_ext_bus.c	ALSA: hda: Direct MMIO accesses	2019-08-08 16:36:18 +02:00
hdac_ext_controller.c	ALSA: hda: prevent undefined shift in snd_hdac_ext_bus_get_link()	2020-11-18 19:20:18 +01:00
hdac_ext_stream.c	ALSA: hda: hdac_ext_stream: fix potential locking issues	2021-11-26 10:47:23 +01:00
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