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Commit 1f620942 authored by Helge Deller's avatar Helge Deller Committed by Greg Kroah-Hartman
Browse files

parisc: Skip registering LED when running in QEMU 



commit b438749044356dd1329c45e9b5a9377b6ea13eb2 upstream.

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

Signed-off-by: default avatarHelge Deller <deller@gmx.de>
CC: stable@vger.kernel.org # v4.9+
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 1bef3a66

drivers/parisc/led.c

+3 −0
Original line number Diff line number Diff line
@@ -568,6 +568,9 @@ 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);