From 315a383ad7dbd484fafb93ef08038e3dbafbb7a8 Mon Sep 17 00:00:00 2001 From: Tomas Winkler Date: Wed, 17 Jul 2013 15:13:15 +0300 Subject: [PATCH] mei: me: fix reset state machine ME HW ready bit is down after hw reset was asserted or on error. Only on error we need to enter the reset flow, additional reset need to be prevented when reset was triggered during initialization , power up/down or a reset is already in progress Tested-by: Shuah Khan Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman --- drivers/misc/mei/hw-me.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/misc/mei/hw-me.c b/drivers/misc/mei/hw-me.c index e4f8dec4dc3c..a0e19e61e7df 100644 --- a/drivers/misc/mei/hw-me.c +++ b/drivers/misc/mei/hw-me.c @@ -483,7 +483,9 @@ irqreturn_t mei_me_irq_thread_handler(int irq, void *dev_id) /* check if ME wants a reset */ if (!mei_hw_is_ready(dev) && dev->dev_state != MEI_DEV_RESETTING && - dev->dev_state != MEI_DEV_INITIALIZING) { + dev->dev_state != MEI_DEV_INITIALIZING && + dev->dev_state != MEI_DEV_POWER_DOWN && + dev->dev_state != MEI_DEV_POWER_UP) { dev_dbg(&dev->pdev->dev, "FW not ready.\n"); mei_reset(dev, 1); mutex_unlock(&dev->device_lock);