From b438749044356dd1329c45e9b5a9377b6ea13eb2 Mon Sep 17 00:00:00 2001 From: Helge Deller Date: Tue, 2 Apr 2019 12:17:08 +0200 Subject: [PATCH] parisc: Skip registering LED when running in QEMU No need to spend CPU cycles when we run on QEMU. Signed-off-by: Helge Deller CC: stable@vger.kernel.org # v4.9+ --- drivers/parisc/led.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/parisc/led.c b/drivers/parisc/led.c index 0c6e8b44b4ed..c60b465f6fe4 100644 --- a/drivers/parisc/led.c +++ b/drivers/parisc/led.c @@ -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);