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[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>
This commit is contained in:
Grant Likely 2007-05-07 01:38:51 +10:00 committed by Paul Mackerras
parent 3a5cc44268
commit a348119778
1 changed files with 3 additions and 2 deletions
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5
drivers/serial/mpc52xx_uart.c
View File

@ -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);