From: Helge Deller <deller@gmx.de>
Date: Tue, 2 Apr 2019 10:17:08 +0000 (+0200)
Subject: parisc: Skip registering LED when running in QEMU
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=b438749044356dd1329c45e9b5a9377b6ea13eb2;p=openwrt%2Fstaging%2Fblogic.git

parisc: Skip registering LED when running in QEMU

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

Signed-off-by: Helge Deller <deller@gmx.de>
CC: stable@vger.kernel.org # v4.9+
---

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);