4.14-stable review patch. If anyone has any objections, please let me know.
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From: Helge Deller deller@gmx.de
commit 358ad816e52d4253b38c2f312e6b1cbd89e0dbf7 upstream.
Older PA-RISC machines have LEDs which show the disk- and LAN-activity. The computation is done in software and takes quite some time, e.g. on a J6500 this may take up to 60% time of one CPU if the machine is loaded via network traffic.
Since most people don't care about the LEDs, start with LEDs disabled and just show a CPU heartbeat LED. The disk and LAN LEDs can be turned on manually via /proc/pdc/led.
Signed-off-by: Helge Deller deller@gmx.de Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/parisc/led.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/parisc/led.c +++ b/drivers/parisc/led.c @@ -60,8 +60,8 @@ static int led_type __read_mostly = -1; static unsigned char lastleds; /* LED state from most recent update */ static unsigned int led_heartbeat __read_mostly = 1; -static unsigned int led_diskio __read_mostly = 1; -static unsigned int led_lanrxtx __read_mostly = 1; +static unsigned int led_diskio __read_mostly; +static unsigned int led_lanrxtx __read_mostly; static char lcd_text[32] __read_mostly; static char lcd_text_default[32] __read_mostly; static int lcd_no_led_support __read_mostly = 0; /* KittyHawk doesn't support LED on its LCD */