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This is harmless, but the "addr" comes from the user and it could lead
to a negative shift or to shift wrapping if it's too high.
Fixes: 0b00a5615d ("ALSA: hdac_ext: add hdac extended controller")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/20201103101807.GC1127762@mwanda
Signed-off-by: Takashi Iwai <tiwai@suse.de>