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Subject[PATCH] driver-core : get_device before create/remove sysfs files
get dev reference before create/remove sysfiles, errno fixes as well.

Signed-off-by: Dave Young <hidave.darkstar@gmail.com>
---
drivers/base/core.c | 12 ++++++++----
1 file changed, 8 insertions(+), 4 deletions(-)
diff -upr a/drivers/base/core.c b/drivers/base/core.c
--- a/drivers/base/core.c 2008-01-30 09:49:56.000000000 +0800
+++ b/drivers/base/core.c 2008-01-30 09:49:56.000000000 +0800
@@ -414,7 +414,7 @@ struct kset *devices_kset;
*/
int device_create_file(struct device *dev, struct device_attribute *attr)
{
- int error = 0;
+ int error = -ENODEV;
if (get_device(dev)) {
error = sysfs_create_file(&dev->kobj, &attr->attr);
put_device(dev);
@@ -442,9 +442,11 @@ void device_remove_file(struct device *d
*/
int device_create_bin_file(struct device *dev, struct bin_attribute *attr)
{
- int error = -EINVAL;
- if (dev)
+ int error = -ENODEV;
+ if (get_device(dev)) {
error = sysfs_create_bin_file(&dev->kobj, attr);
+ put_device(dev);
+ }
return error;
}
EXPORT_SYMBOL_GPL(device_create_bin_file);
@@ -456,8 +458,10 @@ EXPORT_SYMBOL_GPL(device_create_bin_file
*/
void device_remove_bin_file(struct device *dev, struct bin_attribute *attr)
{
- if (dev)
+ if (get_device(dev)) {
sysfs_remove_bin_file(&dev->kobj, attr);
+ put_device(dev);
+ }
}
EXPORT_SYMBOL_GPL(device_remove_bin_file);


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