sysfs: kill unnecessary attribute->owner

sysfs is now completely out of driver/module lifetime game.  After
deletion, a sysfs node doesn't access anything outside sysfs proper,
so there's no reason to hold onto the attribute owners.  Note that
often the wrong modules were accounted for as owners leading to
accessing removed modules.

This patch kills now unnecessary attribute->owner.  Note that with
this change, userland holding a sysfs node does not prevent the
backing module from being unloaded.

For more info regarding lifetime rule cleanup, please read the
following message.

  http://article.gmane.org/gmane.linux.kernel/510293

(tweaked by Greg to not delete the field just yet, to make it easier to
merge things properly.)

Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Cornelia Huck <cornelia.huck@de.ibm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 0 insertions, 10 deletions

diff --git a/drivers/char/ipmi/ipmi_msghandler.c b/drivers/char/ipmi/ipmi_msghandler.c
index 8e222f2b80cc..b5df7e61aeb2 100644
--- a/drivers/char/ipmi/ipmi_msghandler.c
+++ b/drivers/char/ipmi/ipmi_msghandler.c
@@ -2171,52 +2171,42 @@ static int create_files(struct bmc_device *bmc)
         int err;
 
         bmc->device_id_attr.attr.name = "device_id";
-        bmc->device_id_attr.attr.owner = THIS_MODULE;
         bmc->device_id_attr.attr.mode = S_IRUGO;
         bmc->device_id_attr.show = device_id_show;
 
         bmc->provides_dev_sdrs_attr.attr.name = "provides_device_sdrs";
-        bmc->provides_dev_sdrs_attr.attr.owner = THIS_MODULE;
         bmc->provides_dev_sdrs_attr.attr.mode = S_IRUGO;
         bmc->provides_dev_sdrs_attr.show = provides_dev_sdrs_show;
 
         bmc->revision_attr.attr.name = "revision";
-        bmc->revision_attr.attr.owner = THIS_MODULE;
         bmc->revision_attr.attr.mode = S_IRUGO;
         bmc->revision_attr.show = revision_show;
 
         bmc->firmware_rev_attr.attr.name = "firmware_revision";
-        bmc->firmware_rev_attr.attr.owner = THIS_MODULE;
         bmc->firmware_rev_attr.attr.mode = S_IRUGO;
         bmc->firmware_rev_attr.show = firmware_rev_show;
 
         bmc->version_attr.attr.name = "ipmi_version";
-        bmc->version_attr.attr.owner = THIS_MODULE;
         bmc->version_attr.attr.mode = S_IRUGO;
         bmc->version_attr.show = ipmi_version_show;
 
         bmc->add_dev_support_attr.attr.name = "additional_device_support";
-        bmc->add_dev_support_attr.attr.owner = THIS_MODULE;
         bmc->add_dev_support_attr.attr.mode = S_IRUGO;
         bmc->add_dev_support_attr.show = add_dev_support_show;
 
         bmc->manufacturer_id_attr.attr.name = "manufacturer_id";
-        bmc->manufacturer_id_attr.attr.owner = THIS_MODULE;
         bmc->manufacturer_id_attr.attr.mode = S_IRUGO;
         bmc->manufacturer_id_attr.show = manufacturer_id_show;
 
         bmc->product_id_attr.attr.name = "product_id";
-        bmc->product_id_attr.attr.owner = THIS_MODULE;
         bmc->product_id_attr.attr.mode = S_IRUGO;
         bmc->product_id_attr.show = product_id_show;
 
         bmc->guid_attr.attr.name = "guid";
-        bmc->guid_attr.attr.owner = THIS_MODULE;
         bmc->guid_attr.attr.mode = S_IRUGO;
         bmc->guid_attr.show = guid_show;
 
         bmc->aux_firmware_rev_attr.attr.name = "aux_firmware_revision";
-        bmc->aux_firmware_rev_attr.attr.owner = THIS_MODULE;
         bmc->aux_firmware_rev_attr.attr.mode = S_IRUGO;
         bmc->aux_firmware_rev_attr.show = aux_firmware_rev_show;