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| author | Clemens Ladisch <clemens@ladisch.de> | 2008-09-24 15:25:28 +0200 |
|---|---|---|
| committer | Clemens Ladisch <clemens@ladisch.de> | 2008-09-24 15:25:28 +0200 |
| commit | cdad5b8db91ac46a8e226306d062fe4c896b2bed (patch) | |
| tree | 3057725efc32290ba69d98db1cf4bd80ce3c9a43 | |
| parent | ba8ed1210b4e5449c80beef321c4459e840fece1 (diff) | |
| download | linux-3.10-cdad5b8db91ac46a8e226306d062fe4c896b2bed.tar.gz linux-3.10-cdad5b8db91ac46a8e226306d062fe4c896b2bed.tar.bz2 linux-3.10-cdad5b8db91ac46a8e226306d062fe4c896b2bed.zip | |
ALSA: oxygen: wait for ACK when resetting UART
After sending a reset command to the UART, wait some time for the ACK to
be generated (and to be read and dropped by the interrupt handler)
before sending the next command.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
| -rw-r--r-- | sound/pci/oxygen/oxygen_io.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/sound/pci/oxygen/oxygen_io.c b/sound/pci/oxygen/oxygen_io.c index deba7389aec..3126c4b403d 100644 --- a/sound/pci/oxygen/oxygen_io.c +++ b/sound/pci/oxygen/oxygen_io.c @@ -244,6 +244,7 @@ static void _write_uart(struct oxygen *chip, unsigned int port, u8 data) void oxygen_reset_uart(struct oxygen *chip) { _write_uart(chip, 1, MPU401_RESET); + msleep(1); /* wait for ACK */ _write_uart(chip, 1, MPU401_ENTER_UART); } EXPORT_SYMBOL(oxygen_reset_uart); |