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@xxxxxxxxxx> Tested-by: Michal Simek <michal.simek@xxxxxxxxxx> --- Changes in v3: None Changes in v2: None 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 787a12064fa0..814391038abb 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); -- 1.9.1.1.gbb9f595 -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
