Commit 5ce15d2d authored Apr 04, 2014 by Soren Brinkmann Committed by Greg Kroah-Hartman Apr 24, 2014

tty: xuartps: Print warning in clock notifier

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.brinkmann@xilinx.com>
Tested-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent e555a211

drivers/tty/serial/xilinx_uartps.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -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);