Gitweb:     
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=a3481197783c187707090504062488862768260a
Commit:     a3481197783c187707090504062488862768260a
Parent:     3a5cc44268d9c3eee301f366801005e331b1e871
Author:     Grant Likely <[EMAIL PROTECTED]>
AuthorDate: Mon May 7 01:38:51 2007 +1000
Committer:  Paul Mackerras <[EMAIL PROTECTED]>
CommitDate: Mon May 7 20:31:15 2007 +1000

    [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 <[EMAIL PROTECTED]>
    Signed-off-by: Sylvain Munaut <[EMAIL PROTECTED]>
    Signed-off-by: Paul Mackerras <[EMAIL PROTECTED]>
---
 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 f8c1761..35f8b86 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);
-
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