From: Tomas Winkler <tomas.winkler@intel.com>
Date: Mon, 11 Nov 2013 11:26:06 +0000 (+0200)
Subject: mei: remove flash_work_queue
X-Git-Tag: firefly_0821_release~176^2~4628^2~77
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=dc844b0d99b8533d6174e5b9a369f7c2cdacfe66;p=firefly-linux-kernel-4.4.55.git

mei: remove flash_work_queue

Cancel each work properly and remove flash_work_queue.

Quoting documentation:

In most situations flushing the entire workqueue is overkill; you merely
need to know that a particular work item isn't queued and isn't running.
In such cases you should use cancel_delayed_work_sync() or
cancel_work_sync() instead.

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/misc/mei/init.c b/drivers/misc/mei/init.c
index f7f3abbe12b6..83c879bf9967 100644
--- a/drivers/misc/mei/init.c
+++ b/drivers/misc/mei/init.c
@@ -131,6 +131,15 @@ err:
 }
 EXPORT_SYMBOL_GPL(mei_start);
 
+
+void mei_cancel_work(struct mei_device *dev)
+{
+	cancel_work_sync(&dev->init_work);
+
+	cancel_delayed_work(&dev->timer_work);
+}
+EXPORT_SYMBOL_GPL(mei_cancel_work);
+
 /**
  * mei_reset - resets host and fw.
  *
@@ -215,16 +224,14 @@ void mei_stop(struct mei_device *dev)
 {
 	dev_dbg(&dev->pdev->dev, "stopping the device.\n");
 
-	flush_scheduled_work();
+	mei_cancel_work(dev);
 
-	mutex_lock(&dev->device_lock);
+	mei_nfc_host_exit(dev);
 
-	cancel_delayed_work(&dev->timer_work);
+	mutex_lock(&dev->device_lock);
 
 	mei_wd_stop(dev);
 
-	mei_nfc_host_exit();
-
 	dev->dev_state = MEI_DEV_POWER_DOWN;
 	mei_reset(dev, 0);
 
diff --git a/drivers/misc/mei/mei_dev.h b/drivers/misc/mei/mei_dev.h
index 406f68e05b4e..6f577bf5dc9d 100644
--- a/drivers/misc/mei/mei_dev.h
+++ b/drivers/misc/mei/mei_dev.h
@@ -463,6 +463,7 @@ void mei_device_init(struct mei_device *dev);
 void mei_reset(struct mei_device *dev, int interrupts);
 int mei_start(struct mei_device *dev);
 void mei_stop(struct mei_device *dev);
+void mei_cancel_work(struct mei_device *dev);
 
 /*
  *  MEI interrupt functions prototype
@@ -510,7 +511,7 @@ int mei_amthif_irq_read(struct mei_device *dev, s32 *slots);
  * NFC functions
  */
 int mei_nfc_host_init(struct mei_device *dev);
-void mei_nfc_host_exit(void);
+void mei_nfc_host_exit(struct mei_device *dev);
 
 /*
  * NFC Client UUID
diff --git a/drivers/misc/mei/nfc.c b/drivers/misc/mei/nfc.c
index 994ca4aff1a3..0a892205ce7e 100644
--- a/drivers/misc/mei/nfc.c
+++ b/drivers/misc/mei/nfc.c
@@ -547,12 +547,16 @@ err:
 	return ret;
 }
 
-void mei_nfc_host_exit(void)
+void mei_nfc_host_exit(struct mei_device *dev)
 {
 	struct mei_nfc_dev *ndev = &nfc_dev;
 
+	cancel_work_sync(&ndev->init_work);
+
+	mutex_lock(&dev->device_lock);
 	if (ndev->cl && ndev->cl->device)
 		mei_cl_remove_device(ndev->cl->device);
 
 	mei_nfc_free(ndev);
+	mutex_unlock(&dev->device_lock);
 }
diff --git a/drivers/misc/mei/pci-me.c b/drivers/misc/mei/pci-me.c
index b96205aece0c..3bfae3843d95 100644
--- a/drivers/misc/mei/pci-me.c
+++ b/drivers/misc/mei/pci-me.c
@@ -195,8 +195,8 @@ static int mei_me_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	return 0;
 
 release_irq:
+	mei_cancel_work(dev);
 	mei_disable_interrupts(dev);
-	flush_scheduled_work();
 	free_irq(pdev->irq, dev);
 disable_msi:
 	pci_disable_msi(pdev);