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authorHelge Deller <deller@gmx.de>2019-04-02 12:17:08 +0200
committerHelge Deller <deller@gmx.de>2019-05-03 23:47:39 +0200
commitb438749044356dd1329c45e9b5a9377b6ea13eb2 (patch)
tree1753b07d209a44f7a0e6b2fb2d0a6c1abaf5523f /drivers/parisc
parentf30bfa6d29da64a302a99b20ff79df8088c61836 (diff)
downloadlinux-b438749044356dd1329c45e9b5a9377b6ea13eb2.tar.bz2
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+
Diffstat (limited to 'drivers/parisc')
-rw-r--r--drivers/parisc/led.c3
1 files changed, 3 insertions, 0 deletions
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);