| From b438749044356dd1329c45e9b5a9377b6ea13eb2 Mon Sep 17 00:00:00 2001 |
| From: Helge Deller <deller@gmx.de> |
| Date: Tue, 2 Apr 2019 12:17:08 +0200 |
| Subject: parisc: Skip registering LED when running in QEMU |
| |
| From: Helge Deller <deller@gmx.de> |
| |
| 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> |
| |
| --- |
| drivers/parisc/led.c | 3 +++ |
| 1 file changed, 3 insertions(+) |
| |
| --- a/drivers/parisc/led.c |
| +++ b/drivers/parisc/led.c |
| @@ -568,6 +568,9 @@ int __init register_led_driver(int model |
| 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); |
