tty: xuartps: Fix build error when COMMON_CLK is not set

Clock notifiers are only available when CONFIG_COMMON_CLK is enabled.
Hence all notifier related code has to be protected by corresponsing
ifdefs.

Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/tty/serial/xilinx_uartps.c b/drivers/tty/serial/xilinx_uartps.c
index ca4a2f1fbca9..e46e9f3f19b9 100644
--- a/drivers/tty/serial/xilinx_uartps.c
+++ b/drivers/tty/serial/xilinx_uartps.c
@@ -411,6 +411,7 @@ static unsigned int xuartps_set_baud_rate(struct uart_port *port,
         return calc_baud;
 }
 
+#ifdef CONFIG_COMMON_CLK
 /**
  * xuartps_clk_notitifer_cb - Clock notifier callback
  * @nb:         Notifier block
@@ -504,6 +505,7 @@ static int xuartps_clk_notifier_cb(struct notifier_block *nb,
                 return NOTIFY_DONE;
         }
 }
+#endif
 
 /*----------------------Uart Operations---------------------------*/
 
@@ -1380,11 +1382,13 @@ static int xuartps_probe(struct platform_device *pdev)
                 goto err_out_clk_disable;
         }
 
+#ifdef CONFIG_COMMON_CLK
         xuartps_data->clk_rate_change_nb.notifier_call =
                         xuartps_clk_notifier_cb;
         if (clk_notifier_register(xuartps_data->refclk,
                                 &xuartps_data->clk_rate_change_nb))
                 dev_warn(&pdev->dev, "Unable to register clock notifier.\n");
+#endif
 
         /* Initialize the port structure */
         port = xuartps_get_port();
@@ -1415,8 +1419,10 @@ static int xuartps_probe(struct platform_device *pdev)
         }
 
 err_out_notif_unreg:
+#ifdef CONFIG_COMMON_CLK
         clk_notifier_unregister(xuartps_data->refclk,
                         &xuartps_data->clk_rate_change_nb);
+#endif
 err_out_clk_disable:
         clk_disable_unprepare(xuartps_data->refclk);
 err_out_clk_dis_aper:
@@ -1438,8 +1444,10 @@ static int xuartps_remove(struct platform_device *pdev)
         int rc;
 
         /* Remove the xuartps port from the serial core */
+#ifdef CONFIG_COMMON_CLK
         clk_notifier_unregister(xuartps_data->refclk,
                         &xuartps_data->clk_rate_change_nb);
+#endif
         rc = uart_remove_one_port(&xuartps_uart_driver, port);
         port->mapbase = 0;
         clk_disable_unprepare(xuartps_data->refclk);