linux-kernel - [PATCH 10/10] Driver core: Remove unneeded get

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Date:	Sat,  2 Feb 2008 15:56:04 -0800
From:	Greg Kroah-Hartman <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org
Cc:	Cornelia Huck <cornelia.huck@...ibm.com>,
	Dave Young <hidave.darkstar@...il.com>,
	Greg Kroah-Hartman <gregkh@...e.de>
Subject: [PATCH 10/10] Driver core: Remove unneeded get_{device,driver}() calls.

From: Cornelia Huck <cornelia.huck@...ibm.com>

Driver core: Remove unneeded get_{device,driver}() calls.

Code trying to add/remove attributes must hold a reference to
the device resp. driver anyway, so let's remove those reference
count games.

Signed-off-by: Cornelia Huck <cornelia.huck@...ibm.com>
Cc: Dave Young <hidave.darkstar@...il.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>
---
 drivers/base/core.c   |    8 ++------
 drivers/base/driver.c |    9 +++------
 2 files changed, 5 insertions(+), 12 deletions(-)

diff --git a/drivers/base/core.c b/drivers/base/core.c
index a0cfda5..9c0070b 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -423,10 +423,8 @@ struct kset *devices_kset;
 int device_create_file(struct device *dev, struct device_attribute *attr)
 {
 	int error = 0;
-	if (get_device(dev)) {
+	if (dev)
 		error = sysfs_create_file(&dev->kobj, &attr->attr);
-		put_device(dev);
-	}
 	return error;
 }
 
@@ -437,10 +435,8 @@ int device_create_file(struct device *dev, struct device_attribute *attr)
  */
 void device_remove_file(struct device *dev, struct device_attribute *attr)
 {
-	if (get_device(dev)) {
+	if (dev)
 		sysfs_remove_file(&dev->kobj, &attr->attr);
-		put_device(dev);
-	}
 }
 
 /**
diff --git a/drivers/base/driver.c b/drivers/base/driver.c
index a35f041..ba75184 100644
--- a/drivers/base/driver.c
+++ b/drivers/base/driver.c
@@ -97,10 +97,9 @@ int driver_create_file(struct device_driver *drv,
 		       struct driver_attribute *attr)
 {
 	int error;
-	if (get_driver(drv)) {
+	if (drv)
 		error = sysfs_create_file(&drv->p->kobj, &attr->attr);
-		put_driver(drv);
-	} else
+	else
 		error = -EINVAL;
 	return error;
 }
@@ -114,10 +113,8 @@ EXPORT_SYMBOL_GPL(driver_create_file);
 void driver_remove_file(struct device_driver *drv,
 			struct driver_attribute *attr)
 {
-	if (get_driver(drv)) {
+	if (drv)
 		sysfs_remove_file(&drv->p->kobj, &attr->attr);
-		put_driver(drv);
-	}
 }
 EXPORT_SYMBOL_GPL(driver_remove_file);
 
-- 
1.5.3.8

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