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authorKumar Gala <galak@kernel.crashing.org>2006-02-08 21:34:35 +0000
committerRussell King <rmk+kernel@arm.linux.org.uk>2006-02-08 21:34:35 +0000
commitf5968b37b3ad35b682b574b578843a0361218aff (patch)
tree59bd62257053a4252cf7b01a675b577a93e313d2
parent620739025b94fe472c845ce013bff62716d3c576 (diff)
[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>
-rw-r--r--drivers/serial/8250.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c
index 179c1f065e6..b1fc97d5f64 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);
}