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authorTomas Winkler <tomas.winkler@intel.com>2013-07-17 15:13:15 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-07-23 19:31:34 -0700
commit315a383ad7dbd484fafb93ef08038e3dbafbb7a8 (patch)
treeb2768b3348f521a24729f689061c6a45f9a9d7eb /drivers/misc
parent9310f61a94ec779b2919864c7e66241ff80fe96d (diff)
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 <shuah.kh@samsung.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc')
-rw-r--r--drivers/misc/mei/hw-me.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/misc/mei/hw-me.c b/drivers/misc/mei/hw-me.c
index e4f8dec4dc3..a0e19e61e7d 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);