From 22d3a20030439420bf2795c60529ba0e89b4d82c Mon Sep 17 00:00:00 2001 From: Giuliano Pochini Date: Mon, 17 Sep 2007 12:49:40 +0200 Subject: [ALSA] echoaudio - Add barrier() to prevent compiler optimization This patch adds a barrier() to prevent the compiler from moving the read outside of the loop. It also fixes a comment. Signed-off-by: Giuliano Pochini Signed-off-by: Takashi Iwai Signed-off-by: Jaroslav Kysela --- sound/pci/echoaudio/echoaudio_dsp.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'sound') diff --git a/sound/pci/echoaudio/echoaudio_dsp.c b/sound/pci/echoaudio/echoaudio_dsp.c index 42afa837d9b..e6c10077039 100644 --- a/sound/pci/echoaudio/echoaudio_dsp.c +++ b/sound/pci/echoaudio/echoaudio_dsp.c @@ -43,11 +43,11 @@ static int wait_handshake(struct echoaudio *chip) { int i; - /* Wait up to 10ms for the handshake from the DSP */ + /* Wait up to 20ms for the handshake from the DSP */ for (i = 0; i < HANDSHAKE_TIMEOUT; i++) { /* Look for the handshake value */ + barrier(); if (chip->comm_page->handshake) { - /*if (i) DE_ACT(("Handshake time: %d\n", i));*/ return 0; } udelay(1); -- cgit v1.2.3