mei: me: drop harmful wait optimization

It my take time till ME_RDY will be cleared after the reset,
so we cannot check the bit before we got the interrupt

Cc: stable@vger.kernel.org
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 1 insertions, 3 deletions

diff --git a/drivers/misc/mei/hw-me.c b/drivers/misc/mei/hw-me.c
index ac76a6377794..031efcfed39e 100644
--- a/drivers/misc/mei/hw-me.c
+++ b/drivers/misc/mei/hw-me.c
@@ -203,6 +203,7 @@ static int mei_me_hw_reset(struct mei_device *dev, bool intr_enable)
         else
                 hcsr &= ~H_IE;
 
+        dev->recvd_hw_ready = false;
         mei_me_reg_write(hw, H_CSR, hcsr);
 
         if (intr_enable == false)
@@ -254,10 +255,7 @@ static bool mei_me_hw_is_ready(struct mei_device *dev)
 static int mei_me_hw_ready_wait(struct mei_device *dev)
 {
         int err;
-        if (mei_me_hw_is_ready(dev))
-                return 0;
 
-        dev->recvd_hw_ready = false;
         mutex_unlock(&dev->device_lock);
         err = wait_event_interruptible_timeout(dev->wait_hw_ready,
                         dev->recvd_hw_ready,