diff options
| author |   Kumar Gala <galak@kernel.crashing.org> | 2006-02-08 21:34:35 +0000 |
|---|---|---|
| committer |   Russell King <rmk+kernel@arm.linux.org.uk> | 2006-02-08 21:34:35 +0000 |
| commit | f5968b37b3ad35b682b574b578843a0361218aff (patch) | |
| tree | 59bd62257053a4252cf7b01a675b577a93e313d2 /drivers | |
| parent | [SERIAL] Remove unnecessary serial.h include (diff) | |
| download | linux-dev-f5968b37b3ad35b682b574b578843a0361218aff.tar.xz linux-dev-f5968b37b3ad35b682b574b578843a0361218aff.zip | |
[SERIAL] 8250 serial console update uart_8250_port ier
On some embedded PowerPC (MPC834x) systems an extra byte would some
times be required to flush data out of the fifo.
serial8250_console_write() was updating the IER in hardware without
also updating the copy in uart_8250_port. This causes issues functions
like serial8250_start_tx() and __stop_tx() to misbehave.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/serial/8250.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c index 179c1f065e60..b1fc97d5f643 100644 --- a/drivers/serial/8250.c +++ b/drivers/serial/8250.c @@ -2229,6 +2229,7 @@ serial8250_console_write(struct console *co, const char *s, unsigned int count) * and restore the IER */ wait_for_xmitr(up, BOTH_EMPTY); + up->ier |= UART_IER_THRI; serial_out(up, UART_IER, ier | UART_IER_THRI); } |