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| author | Giuliano Pochini <pochini@shiny.it> | 2007-09-17 12:49:40 +0200 |
|---|---|---|
| committer | Jaroslav Kysela <perex@perex.cz> | 2007-10-16 16:50:38 +0200 |
| commit | 22d3a20030439420bf2795c60529ba0e89b4d82c (patch) | |
| tree | eed3a36c5510b6d5bb15aae536bf841da0ee2c49 | |
| parent | 11370ee2c1c578a704f47d5513d57274c335db43 (diff) | |
| download | lwn-22d3a20030439420bf2795c60529ba0e89b4d82c.tar.gz lwn-22d3a20030439420bf2795c60529ba0e89b4d82c.zip | |
[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 <pochini@shiny.it>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
| -rw-r--r-- | sound/pci/echoaudio/echoaudio_dsp.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/sound/pci/echoaudio/echoaudio_dsp.c b/sound/pci/echoaudio/echoaudio_dsp.c index 42afa837d9b4..e6c100770392 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); |