[PATCH] powerpc: Loosen udbg_probe_uart_speed sanity checking

The checking of the baudrate in udbg_probe_uart_speed was
too tight and would cause reporting back of the default
baud rate in cases where the computed speed was valid.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

diff --git a/arch/powerpc/kernel/udbg_16550.c b/arch/powerpc/kernel/udbg_16550.c
index e58c048a7b195919db6426166220f37e598b32cb..7541bf44d2da5e95ce7a7cc9a789e7e7db67c817 100644 (file)
--- a/arch/powerpc/kernel/udbg_16550.c
+++ b/arch/powerpc/kernel/udbg_16550.c
@@ -137,7 +137,7 @@ unsigned int udbg_probe_uart_speed(void __iomem *comport, unsigned int clock)
        speed = (clock / prescaler) / (divisor * 16);
 
        /* sanity check */
-       if (speed < 9600 || speed > 115200)
+       if (speed < 0 || speed > (clock / 16))
                speed = 9600;
 
        return speed;