From 32d111a9f0e6de901667612d1b0c46bbfd5d37cb Mon Sep 17 00:00:00 2001 From: "Alexander E. Patrakov" Date: Wed, 31 Oct 2007 11:40:09 -0300 Subject: [PATCH] V4L/DVB (6506): saa7134-alsa: Fix mmap support Trent Piepho wrote: > I do not think the saa7134-alsa driver supports mmap. The cx88-alsa driver > also claimed to support mmap, but it never worked until I fixed it. It's > pretty clear that the code in saa7134-alsa was based on the same code as > cx88-alsa, so it's likely it has the same bug. You are right. The patch below (based on your cx88 patch, but I don't really understand it) fixes mmap support in saa7134-alsa for me. Recording via mmap (arecord -M -f S16_LE -c 2 -r 32000 -D hw:1) didn't work at all before, works now, tested for at least 20 minutes (but, unfortunately, with one overrun at least 0.719 ms long). Signed-off-by: Alexander E. Patrakov Acked-by: Takashi Iwai Signed-off-by: Trent Piepho Signed-off-by: Mauro Carvalho Chehab --- Reading git-format-patch failed