[PATCH 4.14 12/77] parisc: Skip registering LED when running in QEMU

[Greg Kroah-Hartman]

From: Helge Deller <del...@gmx.de>

commit b438749044356dd1329c45e9b5a9377b6ea13eb2 upstream.

No need to spend CPU cycles when we run on QEMU.

Signed-off-by: Helge Deller <del...@gmx.de>
CC: sta...@vger.kernel.org # v4.9+
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>

---
 drivers/parisc/led.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/drivers/parisc/led.c
+++ b/drivers/parisc/led.c
@@ -568,6 +568,9 @@ int __init register_led_driver(int model
                break;
 
        case DISPLAY_MODEL_LASI:
+               /* Skip to register LED in QEMU */
+               if (running_on_qemu)
+                       return 1;
                LED_DATA_REG = data_reg;
                led_func_ptr = led_LASI_driver;
                printk(KERN_INFO "LED display at %lx registered\n", 
LED_DATA_REG);