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Merge branch 'stable-3.2' into pandora-3.2
[pandora-kernel.git]
/
drivers
/
tty
/
serial
/
pmac_zilog.c
diff --git
a/drivers/tty/serial/pmac_zilog.c
b/drivers/tty/serial/pmac_zilog.c
index
5acd24a
..
086f7fe
100644
(file)
--- a/
drivers/tty/serial/pmac_zilog.c
+++ b/
drivers/tty/serial/pmac_zilog.c
@@
-1407,10
+1407,16
@@
static int pmz_verify_port(struct uart_port *port, struct serial_struct *ser)
static int pmz_poll_get_char(struct uart_port *port)
{
struct uart_pmac_port *uap = (struct uart_pmac_port *)port;
static int pmz_poll_get_char(struct uart_port *port)
{
struct uart_pmac_port *uap = (struct uart_pmac_port *)port;
+ int tries = 2;
- while ((read_zsreg(uap, R0) & Rx_CH_AV) == 0)
- udelay(5);
- return read_zsdata(uap);
+ while (tries) {
+ if ((read_zsreg(uap, R0) & Rx_CH_AV) != 0)
+ return read_zsdata(uap);
+ if (tries--)
+ udelay(5);
+ }
+
+ return NO_POLL_CHAR;
}
static void pmz_poll_put_char(struct uart_port *port, unsigned char c)
}
static void pmz_poll_put_char(struct uart_port *port, unsigned char c)