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3fd43858c7
Appearently, the used mask in the .pointer callback is invalid. It should be in period_bytes range. The period_bytes is pow(2), so simple bitwise operation is used. Idea was taken from ALSA bug#4455. Signed-off-by: Jaroslav Kysela <perex@perex.cz> Signed-off-by: Takashi Iwai <tiwai@suse.de>