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>

3 files changed, 2 insertions, 4 deletions

diff --git a/drivers/video/aty/radeon_base.c b/drivers/video/aty/radeon_base.c
index 2ce050193018..3b3c6571f583 100644
--- a/drivers/video/aty/radeon_base.c
+++ b/drivers/video/aty/radeon_base.c
@@ -2126,7 +2126,6 @@ static ssize_t radeon_show_edid2(struct kobject *kobj, char *buf, loff_t off, si
 static struct bin_attribute edid1_attr = {
         .attr   = {
                 .name   = "edid1",
-                .owner  = THIS_MODULE,
                 .mode   = 0444,
         },
         .size   = EDID_LENGTH,
@@ -2136,7 +2135,6 @@ static struct bin_attribute edid1_attr = {
 static struct bin_attribute edid2_attr = {
         .attr   = {
                 .name   = "edid2",
-                .owner  = THIS_MODULE,
                 .mode   = 0444,
         },
         .size   = EDID_LENGTH,
diff --git a/drivers/video/backlight/backlight.c b/drivers/video/backlight/backlight.c
index c65e81ff3578..7e06223bca94 100644
--- a/drivers/video/backlight/backlight.c
+++ b/drivers/video/backlight/backlight.c
@@ -172,7 +172,7 @@ static struct class backlight_class = {
 
 #define DECLARE_ATTR(_name,_mode,_show,_store)                  \
 {                                                               \
-        .attr   = { .name = __stringify(_name), .mode = _mode, .owner = THIS_MODULE },  \
+        .attr   = { .name = __stringify(_name), .mode = _mode }, \
         .show   = _show,                                        \
         .store  = _store,                                       \
 }
diff --git a/drivers/video/backlight/lcd.c b/drivers/video/backlight/lcd.c
index 6ef8f0a7a137..648b53c1fdea 100644
--- a/drivers/video/backlight/lcd.c
+++ b/drivers/video/backlight/lcd.c
@@ -157,7 +157,7 @@ static struct class lcd_class = {
 
 #define DECLARE_ATTR(_name,_mode,_show,_store)                  \
 {                                                               \
-        .attr   = { .name = __stringify(_name), .mode = _mode, .owner = THIS_MODULE },  \
+        .attr   = { .name = __stringify(_name), .mode = _mode }, \
         .show   = _show,                                        \
         .store  = _store,                                       \
 }