[PATCH] parisc: Skip registering LED when running in QEMU

[Helge Deller <deller@xxxxxx>]

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

Signed-off-by: Helge Deller <deller@xxxxxx>
CC: stable@xxxxxxxxxxxxxxx # v4.9+

diff --git a/drivers/parisc/led.c b/drivers/parisc/led.c
index 0c6e8b44b4ed..3ecd33e765ac 100644
--- a/drivers/parisc/led.c
+++ b/drivers/parisc/led.c
@@ -568,6 +569,9 @@ int __init register_led_driver(int model, unsigned long cmd_reg, unsigned long d
 		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);