Messages in this thread Patch in this message | | | Subject | [PATCH 2/2] firmware: dmi-sysfs: Remove "dmi" directory on module exit | From | Bjorn Helgaas <> | Date | Thu, 05 Dec 2013 16:46:35 -0700 |
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With CONFIG_DEBUG_KOBJECT_RELEASE=y, removing and immediately reloading the dmi-sysfs module causes the following warning:
sysfs: cannot create duplicate filename '/firmware/dmi' kobject_add_internal failed for dmi with -EEXIST, don't try to register things with the same name in the same directory.
The "dmi" directory stays in sysfs until the dmi_kobj is released, and DEBUG_KOBJECT_RELEASE delays that.
I don't think we can hit this problem in normal usage because dmi_kobj is static and nothing outside dmi-sysfs can get a reference to it, so the only way to delay the "dmi" release is with DEBUG_KOBJECT_RELEASE.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> --- drivers/firmware/dmi-sysfs.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/firmware/dmi-sysfs.c b/drivers/firmware/dmi-sysfs.c index 66200ed5e6a1..e0f1cb3d3598 100644 --- a/drivers/firmware/dmi-sysfs.c +++ b/drivers/firmware/dmi-sysfs.c @@ -685,6 +685,7 @@ static void __exit dmi_sysfs_exit(void) pr_debug("dmi-sysfs: unloading.\n"); cleanup_entry_list(); kset_unregister(dmi_kset); + kobject_del(dmi_kobj); kobject_put(dmi_kobj); }
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