linux-kernel - Weirdness in patch

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Message-ID: <Pine.LNX.4.44L0.1003041511070.1305-100000@iolanthe.rowland.org>
Date:	Thu, 4 Mar 2010 15:22:22 -0500 (EST)
From:	Alan Stern <stern@...land.harvard.edu>
To:	Greg KH <greg@...ah.com>
cc:	Kernel development list <linux-kernel@...r.kernel.org>
Subject: Weirdness in patch

Greg:

In my copy of gregkh-all-2.6.33.patch (which is dated 2010-03-01), 
there are changes to drivers/base/power/main.c, coming from the 
gregkh-05-driver-core/driver-core-create-lock-unlock-functions-for-struct-device 
patch.

The first weird thing is this.  That file as it currently exists on
www.kernel.org (dated 2010-03-03) contains the following hunk (it's the
last hunk for drivers/base/power/main.c):

@@ -962,7 +962,7 @@ static int device_prepare(struct device
 		suspend_report_result(dev->class->pm->prepare, error);
 	}
  End:
-	up(&dev->sem);
+	device_unlock(dev);

 	return error;
 }

But in my copy of gregkh-all-2.6.33.patch, the corresponding hunk is:

@@ -852,7 +852,7 @@
 		suspend_report_result(dev->class->pm->prepare, error);
 	}
  End:
-	up(&dev->sem);
+	device_lock(dev);

 	return error;
 }

The device_unlock() got changed to device_lock()!  That messed up my 
suspend testing for a while...

Secondly, none of these changes is present in the 
gregkh-all-2.6.33.patch file at www.kernel.org.  Isn't that supposed to 
contain all the patches from the subsystems merged into one?

What's the story?

Alan Stern

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