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, 0 insertions, 7 deletions

diff --git a/drivers/pci/hotplug/acpiphp_ibm.c b/drivers/pci/hotplug/acpiphp_ibm.c
index e7322c2..74556ec 100644
--- a/drivers/pci/hotplug/acpiphp_ibm.c
+++ b/drivers/pci/hotplug/acpiphp_ibm.c
@@ -117,7 +117,6 @@ static struct notification ibm_note;
 static struct bin_attribute ibm_apci_table_attr = {
 	    .attr = {
 		    .name = "apci_table",
-		    .owner = THIS_MODULE,
 		    .mode = S_IRUGO,
 	    },
 	    .read = ibm_read_apci_table,
diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c
index 284e83a..d448f8d 100644
--- a/drivers/pci/pci-sysfs.c
+++ b/drivers/pci/pci-sysfs.c
@@ -499,7 +499,6 @@ static int pci_create_resource_files(struct pci_dev *pdev)
 			sprintf(res_attr_name, "resource%d", i);
 			res_attr->attr.name = res_attr_name;
 			res_attr->attr.mode = S_IRUSR | S_IWUSR;
-			res_attr->attr.owner = THIS_MODULE;
 			res_attr->size = pci_resource_len(pdev, i);
 			res_attr->mmap = pci_mmap_resource;
 			res_attr->private = &pdev->resource[i];
@@ -582,7 +581,6 @@ static struct bin_attribute pci_config_attr = {
 	.attr =	{
 		.name = "config",
 		.mode = S_IRUGO | S_IWUSR,
-		.owner = THIS_MODULE,
 	},
 	.size = 256,
 	.read = pci_read_config,
@@ -593,7 +591,6 @@ static struct bin_attribute pcie_config_attr = {
 	.attr =	{
 		.name = "config",
 		.mode = S_IRUGO | S_IWUSR,
-		.owner = THIS_MODULE,
 	},
 	.size = 4096,
 	.read = pci_read_config,
@@ -628,7 +625,6 @@ int __must_check pci_create_sysfs_dev_files (struct pci_dev *pdev)
 			rom_attr->size = pci_resource_len(pdev, PCI_ROM_RESOURCE);
 			rom_attr->attr.name = "rom";
 			rom_attr->attr.mode = S_IRUSR;
-			rom_attr->attr.owner = THIS_MODULE;
 			rom_attr->read = pci_read_rom;
 			rom_attr->write = pci_write_rom;
 			retval = sysfs_create_bin_file(&pdev->dev.kobj, rom_attr);
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index e48fcf0..08783bd3 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -39,7 +39,6 @@ static void pci_create_legacy_files(struct pci_bus *b)
 		b->legacy_io->attr.name = "legacy_io";
 		b->legacy_io->size = 0xffff;
 		b->legacy_io->attr.mode = S_IRUSR | S_IWUSR;
-		b->legacy_io->attr.owner = THIS_MODULE;
 		b->legacy_io->read = pci_read_legacy_io;
 		b->legacy_io->write = pci_write_legacy_io;
 		class_device_create_bin_file(&b->class_dev, b->legacy_io);
@@ -49,7 +48,6 @@ static void pci_create_legacy_files(struct pci_bus *b)
 		b->legacy_mem->attr.name = "legacy_mem";
 		b->legacy_mem->size = 1024*1024;
 		b->legacy_mem->attr.mode = S_IRUSR | S_IWUSR;
-		b->legacy_mem->attr.owner = THIS_MODULE;
 		b->legacy_mem->mmap = pci_mmap_legacy_mem;
 		class_device_create_bin_file(&b->class_dev, b->legacy_mem);
 	}