linux-kernel - [char-misc-next 03/11] mei: replace check for connection instead of transitioning

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Date:	Fri, 27 Mar 2015 00:27:59 +0200
From:	Tomas Winkler <tomas.winkler@...el.com>
To:	gregkh@...uxfoundation.org
Cc:	arnd@...db.de, linux-kernel@...r.kernel.org,
	Tomas Winkler <tomas.winkler@...el.com>
Subject: [char-misc-next 03/11] mei: replace check for connection instead of transitioning

The function mei_cl_is_transitioning is just opposite
of mei_cl_is_connected. What we actually wanted to
check is if we lost connection so we can discard
the check for transition and check for 'not connected'

Signed-off-by: Tomas Winkler <tomas.winkler@...el.com>
---
 drivers/misc/mei/bus.c    |  4 ++--
 drivers/misc/mei/client.h | 14 ++++++++------
 drivers/misc/mei/main.c   |  4 ++--
 3 files changed, 12 insertions(+), 10 deletions(-)

diff --git a/drivers/misc/mei/bus.c b/drivers/misc/mei/bus.c
index b724a67696fc..4cf38c39878a 100644
--- a/drivers/misc/mei/bus.c
+++ b/drivers/misc/mei/bus.c
@@ -302,7 +302,7 @@ ssize_t __mei_cl_recv(struct mei_cl *cl, u8 *buf, size_t length)
 
 		if (wait_event_interruptible(cl->rx_wait,
 				(!list_empty(&cl->rd_completed)) ||
-				mei_cl_is_transitioning(cl))) {
+				(!mei_cl_is_connected(cl)))) {
 
 			if (signal_pending(current))
 				return -EINTR;
@@ -311,7 +311,7 @@ ssize_t __mei_cl_recv(struct mei_cl *cl, u8 *buf, size_t length)
 
 		mutex_lock(&dev->device_lock);
 
-		if (mei_cl_is_transitioning(cl)) {
+		if (!mei_cl_is_connected(cl)) {
 			rets = -EBUSY;
 			goto out;
 		}
diff --git a/drivers/misc/mei/client.h b/drivers/misc/mei/client.h
index 7800d1bd8ba1..0a39e5d45171 100644
--- a/drivers/misc/mei/client.h
+++ b/drivers/misc/mei/client.h
@@ -90,16 +90,18 @@ int mei_cl_flow_ctrl_reduce(struct mei_cl *cl);
 /*
  *  MEI input output function prototype
  */
+
+/**
+ * mei_cl_is_connected - host client is connected
+ *
+ * @cl: host clinet
+ *
+ * Return: true if the host clinet is connected
+ */
 static inline bool mei_cl_is_connected(struct mei_cl *cl)
 {
 	return  cl->state == MEI_FILE_CONNECTED;
 }
-static inline bool mei_cl_is_transitioning(struct mei_cl *cl)
-{
-	return  MEI_FILE_INITIALIZING == cl->state ||
-		MEI_FILE_DISCONNECTED == cl->state ||
-		MEI_FILE_DISCONNECTING == cl->state;
-}
 
 bool mei_cl_is_other_connecting(struct mei_cl *cl);
 int mei_cl_disconnect(struct mei_cl *cl);
diff --git a/drivers/misc/mei/main.c b/drivers/misc/mei/main.c
index 29fa88b6fa17..7f77f39c24a7 100644
--- a/drivers/misc/mei/main.c
+++ b/drivers/misc/mei/main.c
@@ -203,7 +203,7 @@ static ssize_t mei_read(struct file *file, char __user *ubuf,
 
 		if (wait_event_interruptible(cl->rx_wait,
 				(!list_empty(&cl->rd_completed)) ||
-				mei_cl_is_transitioning(cl))) {
+				(!mei_cl_is_connected(cl)))) {
 
 			if (signal_pending(current))
 				return -EINTR;
@@ -211,7 +211,7 @@ static ssize_t mei_read(struct file *file, char __user *ubuf,
 		}
 
 		mutex_lock(&dev->device_lock);
-		if (mei_cl_is_transitioning(cl)) {
+		if (!mei_cl_is_connected(cl)) {
 			rets = -EBUSY;
 			goto out;
 		}
-- 
1.9.3

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