ALSA: trident: Drop shadow TLB pointer table
The shadow TLB pointer table is allocated and set up, but never really used any longer by the driver. Let's drop it. Since this is the only user of snd_pcm_sgbuf_get_ptr(), we can clean up the API after this change. Link: https://lore.kernel.org/r/20210609162551.7842-2-tiwai@suse.deSigned-off-by: NTakashi Iwai <tiwai@suse.de>
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