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authorTakashi Iwai <tiwai@suse.de>2008-04-25 09:13:45 +0200
committerTakashi Iwai <tiwai@suse.de>2008-04-29 19:01:56 +0200
commitdf7e3fdf83699328d1fdf7000ce0dc852fbb0ad9 (patch)
treedc5ca06bc0754352c8adf201b4f950d7fbf7c0b1 /sound/drivers/mpu401/mpu401_uart.c
parentdrivers: fix integer as NULL pointer warnings (diff)
downloadlinux-dev-df7e3fdf83699328d1fdf7000ce0dc852fbb0ad9.tar.xz
linux-dev-df7e3fdf83699328d1fdf7000ce0dc852fbb0ad9.zip
[ALSA] Add MPU401_INFO_NO_ACK bitflag
Added MPU401_INFO_NO_ACK bitflag to ignore the ACK check for UART commands. VT172x doesn't handle ACK commands, for example. Tested-by: Pavel Hofman <pavel.hofman@insite.cz> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to '')
-rw-r--r--sound/drivers/mpu401/mpu401_uart.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/sound/drivers/mpu401/mpu401_uart.c b/sound/drivers/mpu401/mpu401_uart.c
index 18cca2457d44..2af09996a3d0 100644
--- a/sound/drivers/mpu401/mpu401_uart.c
+++ b/sound/drivers/mpu401/mpu401_uart.c
@@ -243,7 +243,7 @@ static int snd_mpu401_uart_cmd(struct snd_mpu401 * mpu, unsigned char cmd,
#endif
}
mpu->write(mpu, cmd, MPU401C(mpu));
- if (ack) {
+ if (ack && !(mpu->info_flags & MPU401_INFO_NO_ACK)) {
ok = 0;
timeout = 10000;
while (!ok && timeout-- > 0) {