parisc: Skip registering LED when running in QEMU

PATCH New Helge Deller 1 participant 1 message Apr 2, 2019 PA-RISC architecture

lore

Share & tools

lore

Helge Deller

author maintainer

2019-04-02 10:17 UTC #0 lore raw

PATCH 1/1 parisc: Skip registering LED when running in QEMU

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

Signed-off-by Helge Deller <[email protected]>

CC [email protected] # v4.9+

drivers/parisc/led.c +3 -0

index 0c6e8b44b4ed..3ecd33e765ac 100644
@@ -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);