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ns16550: kick watchdog while waiting for a character 

ns16550 busyloops waiting for incoming byte causing watchdog to reboot
while waiting for a key press. A call to WATCHDOG_RESET in NS16550_getc
loop fixes it.

Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
This commit is contained in:
Ladislav Michl 2010-02-01 23:34:25 +01:00 committed by Wolfgang Denk
parent 84d36b3018
commit a1b322a983
1 changed files with 2 additions and 0 deletions
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2
drivers/serial/ns16550.c
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@ -6,6 +6,7 @@
#include <config.h>
#include <ns16550.h>
#include <watchdog.h>
#define UART_LCRVAL UART_LCR_8N1 /* 8 data, 1 stop, no parity */
#define UART_MCRVAL (UART_MCR_DTR | \
@ -70,6 +71,7 @@ char NS16550_getc (NS16550_t com_port)
extern void usbtty_poll(void);
usbtty_poll();
#endif
WATCHDOG_RESET();
}
return (com_port->rbr);
}