diff options
| author | Grant Likely <grant.likely@secretlab.ca> | 2007-05-07 01:38:51 +1000 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2007-05-07 20:31:15 +1000 |
| commit | a3481197783c187707090504062488862768260a (patch) | |
| tree | dabfaf208b86d88c60ca34b2c255c907a8ffe0e3 /drivers/serial/mpc52xx_uart.c | |
| parent | 3a5cc44268d9c3eee301f366801005e331b1e871 (diff) | |
| download | lwn-a3481197783c187707090504062488862768260a.tar.gz lwn-a3481197783c187707090504062488862768260a.zip | |
[POWERPC] Don't shutdown TX on mpc5200 serial port if it is a console
If the serial port gets shut down, then console output stalls. 9 out
of 10 kernel hackers agree, this is a bad thing.
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'drivers/serial/mpc52xx_uart.c')
| -rw-r--r-- | drivers/serial/mpc52xx_uart.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/serial/mpc52xx_uart.c b/drivers/serial/mpc52xx_uart.c index f8c1761eb57f..35f8b86cc78f 100644 --- a/drivers/serial/mpc52xx_uart.c +++ b/drivers/serial/mpc52xx_uart.c @@ -257,9 +257,10 @@ mpc52xx_uart_shutdown(struct uart_port *port) { struct mpc52xx_psc __iomem *psc = PSC(port); - /* Shut down the port, interrupt and all */ + /* Shut down the port. Leave TX active if on a console port */ out_8(&psc->command,MPC52xx_PSC_RST_RX); - out_8(&psc->command,MPC52xx_PSC_RST_TX); + if (!uart_console(port)) + out_8(&psc->command,MPC52xx_PSC_RST_TX); port->read_status_mask = 0; out_be16(&psc->mpc52xx_psc_imr,port->read_status_mask); |