Print a warning if the clock notifier rejects a clock frequency change
to facilitate debugging (see:
http://thread.gmane.org/gmane.linux.ports.arm.kernel/304329/focus=304379)

Signed-off-by: Soren Brinkmann <soren.brinkm...@xilinx.com>
---
 drivers/tty/serial/xilinx_uartps.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/tty/serial/xilinx_uartps.c 
b/drivers/tty/serial/xilinx_uartps.c
index 1c6e1a68ae95..b00060052316 100644
--- a/drivers/tty/serial/xilinx_uartps.c
+++ b/drivers/tty/serial/xilinx_uartps.c
@@ -429,8 +429,10 @@ static int xuartps_clk_notifier_cb(struct notifier_block 
*nb,
                 * frequency.
                 */
                if (!xuartps_calc_baud_divs(ndata->new_rate, xuartps->baud,
-                                       &bdiv, &cd, &div8))
+                                       &bdiv, &cd, &div8)) {
+                       dev_warn(port->dev, "clock rate change rejected\n");
                        return NOTIFY_BAD;
+               }
 
                spin_lock_irqsave(&xuartps->port->lock, flags);
 
-- 
1.9.0.1.g4196000

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