diff options
| author |   Dan Williams <dan.j.williams@intel.com> | 2009-09-08 17:55:21 -0700 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2009-09-08 17:55:21 -0700 |
| commit | bbb20089a3275a19e475dbc21320c3742e3ca423 (patch) | |
| tree | 216fdc1cbef450ca688135c5b8969169482d9a48 /drivers/serial/atmel_serial.c | |
| parent | Merge branch 'iop-raid6' into async-tx-next (diff) | |
| parent | dmaengine: Move all map_sg/unmap_sg for slave channel to its client (diff) | |
| download | wireguard-linux-bbb20089a3275a19e475dbc21320c3742e3ca423.tar.xz wireguard-linux-bbb20089a3275a19e475dbc21320c3742e3ca423.zip | |
Merge branch 'dmaengine' into async-tx-next
Conflicts:
crypto/async_tx/async_xor.c
drivers/dma/ioat/dma_v2.h
drivers/dma/ioat/pci.c
drivers/md/raid5.c
Diffstat (limited to 'drivers/serial/atmel_serial.c')
| -rw-r--r-- | drivers/serial/atmel_serial.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/serial/atmel_serial.c b/drivers/serial/atmel_serial.c index b3497d7e5354..338b15c0a548 100644 --- a/drivers/serial/atmel_serial.c +++ b/drivers/serial/atmel_serial.c @@ -1104,11 +1104,13 @@ static void atmel_set_termios(struct uart_port *port, struct ktermios *termios, /* update the per-port timeout */ uart_update_timeout(port, termios->c_cflag, baud); - /* save/disable interrupts and drain transmitter */ + /* + * save/disable interrupts. The tty layer will ensure that the + * transmitter is empty if requested by the caller, so there's + * no need to wait for it here. + */ imr = UART_GET_IMR(port); UART_PUT_IDR(port, -1); - while (!(UART_GET_CSR(port) & ATMEL_US_TXEMPTY)) - cpu_relax(); /* disable receiver and transmitter */ UART_PUT_CR(port, ATMEL_US_TXDIS | ATMEL_US_RXDIS); |