Commit cdad5b8d authored Sep 24, 2008 by Clemens Ladisch

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>

parent ba8ed121

sound/pci/oxygen/oxygen_io.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -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);