Re: [PATCH 4/4] sysfs: make suicidal nodes just do it directly

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On Thu, 20 Sep 2007 16:26:15 +0900,
Tejun Heo <[email protected]> wrote:

> Sysfs now allows direct suicide.  Make suicidial sysfs nodes to use
> it and remove now unncessary callback mechanism.
> 
> Signed-off-by: Tejun Heo <[email protected]>
> ---
>  drivers/base/core.c         |   33 ----------------------
>  drivers/s390/cio/ccwgroup.c |   25 +++-------------
>  drivers/scsi/scsi_sysfs.c   |   13 +--------
>  fs/sysfs/file.c             |   63 -------------------------------------------
>  include/linux/device.h      |    6 ----
>  include/linux/sysfs.h       |    9 ------
>  6 files changed, 6 insertions(+), 143 deletions(-)

ccwgroup was implicitly relying on a held reference, fix that.

Signed-off-by: Cornelia Huck <[email protected]>

---
 drivers/s390/cio/ccwgroup.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletion(-)

--- linux-2.6.orig/drivers/s390/cio/ccwgroup.c
+++ linux-2.6/drivers/s390/cio/ccwgroup.c
@@ -72,7 +72,7 @@ ccwgroup_ungroup_store(struct device *de
 	struct ccwgroup_device *gdev;
 	int rc;
 
-	gdev = to_ccwgroupdev(dev);
+	gdev = to_ccwgroupdev(get_device(dev));
 
 	if (gdev->state != CCWGROUP_OFFLINE)
 		return -EINVAL;
@@ -81,6 +81,7 @@ ccwgroup_ungroup_store(struct device *de
 	__ccwgroup_remove_symlinks(gdev);
 	device_unregister(dev);
 	mutex_unlock(&gdev->reg_mutex);
+	put_device(dev);
 
 	return count;
 }
-
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