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Date:	Mon, 26 Oct 2009 16:56:58 -0700
From:	<>
Subject: patch driver-core-fix-driver_register-return-value.patch added to gregkh-2.6 tree

This is a note to let you know that I've just added the patch titled

    Subject: Driver core: fix driver_register() return value

to my gregkh-2.6 tree.  Its filename is


This tree can be found at

>From  Mon Oct 26 16:00:03 2009
From: Stas Sergeev <>
Date: Sun, 18 Oct 2009 00:31:38 +0400
Subject: Driver core: fix driver_register() return value
To: Greg KH <>
Cc: Linux kernel <>
Message-ID: <>

In this patch:;a=commitdiff;h=16dc42e018c2868211b4928f20a957c0c216126c
the check was added for another driver to already claim the same device
on the same bus. But the returned error code was wrong: to modprobe, the
-EEXIST means that _this_ driver is already installed. It therefore
doesn't produce the needed error message when _another_ driver is trying
to register for the same device.  Returning -EBUSY fixes the problem.

Signed-off-by: Stas Sergeev <>
Cc: stable <>
Signed-off-by: Greg Kroah-Hartman <>

 drivers/base/driver.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/base/driver.c
+++ b/drivers/base/driver.c
@@ -236,7 +236,7 @@ int driver_register(struct device_driver
 		printk(KERN_ERR "Error: Driver '%s' is already registered, "
 			"aborting...\n", drv->name);
-		return -EEXIST;
+		return -EBUSY;
 	ret = bus_add_driver(drv);

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