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parisc: Skip registering LED when running in QEMU

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commit b438749044356dd1329c45e9b5a9377b6ea13eb2 upstream.

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+
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Helge Deller 2019-04-02 12:17:08 +02:00 committed by Greg Kroah-Hartman
parent 1bef3a661c
commit 1f62094222
1 changed files with 3 additions and 0 deletions
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3
drivers/parisc/led.c
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@ -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);