diff options
| author | Helge Deller <deller@gmx.de> | 2019-04-02 13:17:08 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-05-25 19:16:20 +0300 |
| commit | e7be05c847d314df0d3864a6a0f30a5d026c6ceb (patch) | |
| tree | 0c49f855c1a7a64eb6f1292de2e969dbbdbcd2fd /drivers/parisc | |
| parent | 2e9549e198e005fa44f0476c8cf895274152d5ba (diff) | |
| download | linux-e7be05c847d314df0d3864a6a0f30a5d026c6ceb.tar.xz | |
parisc: Skip registering LED when running in QEMU
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>
Diffstat (limited to 'drivers/parisc')
| -rw-r--r-- | drivers/parisc/led.c | 3 |
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); |