[patch 2.6.25-git 1/3] pcmcia: remove pccard_sysfs_interface warnings

[David Brownell]

From: David Brownell <dbrownell at users.sourceforge.net>

Make the PCMCIA core stop using class_interface to hide socket attribute
registration.  This removes the associated section mismatch warnings, and
helps get to the point where that mechanism can finally be removed.

Simplify that attribute registration by using an attribute_group.
This is a net shrink in object size.

Signed-off-by: David Brownell <dbrownell at users.sourceforge.net>
---
NOTE:  PCMCIA has two more uses of class_interface, the others are
in the SCSI code.  To use this approach to removing class_interface
from PCMCIA, the pcmcia.ko and rsrc_nonstatic.ko modules would need
to merge into pcmcia_core.ko ... more than I wanted to try for now.

 drivers/pcmcia/cs.c           |   13 ++++------
 drivers/pcmcia/cs_internal.h  |    3 +-
 drivers/pcmcia/socket_sysfs.c |   52 ++++++++++++++++--------------------------
 3 files changed, 28 insertions(+), 40 deletions(-)

--- g26.orig/drivers/pcmcia/cs.c	2008-04-27 21:56:38.000000000 -0700
+++ g26/drivers/pcmcia/cs.c	2008-04-27 21:58:06.000000000 -0700
@@ -652,6 +652,9 @@ static int pccardd(void *__skt)
 		complete(&skt->thread_done);
 		return 0;
 	}
+	ret = pccard_sysfs_add_socket(&skt->dev);
+	if (ret)
+		dev_warn(&skt->dev, "err %d adding socket attributes\n", ret);
 
 	add_wait_queue(&skt->thread_wait, &wait);
 	complete(&skt->thread_done);
@@ -694,6 +697,7 @@ static int pccardd(void *__skt)
 	remove_wait_queue(&skt->thread_wait, &wait);
 
 	/* remove from the device core */
+	pccard_sysfs_remove_socket(&skt->dev);
 	device_unregister(&skt->dev);
 
 	return 0;
@@ -940,20 +944,13 @@ EXPORT_SYMBOL(pcmcia_socket_class);
 
 static int __init init_pcmcia_cs(void)
 {
-	int ret;
-
 	init_completion(&pcmcia_unload);
-	ret = class_register(&pcmcia_socket_class);
-	if (ret)
-		return (ret);
-	return class_interface_register(&pccard_sysfs_interface);
+	return class_register(&pcmcia_socket_class);
 }
 
 static void __exit exit_pcmcia_cs(void)
 {
-	class_interface_unregister(&pccard_sysfs_interface);
 	class_unregister(&pcmcia_socket_class);
-
 	wait_for_completion(&pcmcia_unload);
 }
 
--- g26.orig/drivers/pcmcia/cs_internal.h	2008-04-27 21:56:39.000000000 -0700
+++ g26/drivers/pcmcia/cs_internal.h	2008-04-27 21:58:06.000000000 -0700
@@ -121,7 +121,8 @@ struct resource *pcmcia_find_mem_region(
 void release_resource_db(struct pcmcia_socket *s);
 
 /* In socket_sysfs.c */
-extern struct class_interface pccard_sysfs_interface;
+extern int pccard_sysfs_add_socket(struct device *dev);
+extern void pccard_sysfs_remove_socket(struct device *dev);
 
 /* In cs.c */
 extern struct rw_semaphore pcmcia_socket_list_rwsem;
--- g26.orig/drivers/pcmcia/socket_sysfs.c	2008-04-27 21:56:39.000000000 -0700
+++ g26/drivers/pcmcia/socket_sysfs.c	2008-04-27 21:58:06.000000000 -0700
@@ -356,19 +356,23 @@ static ssize_t pccard_store_cis(struct k
 }
 
 
-static struct device_attribute *pccard_socket_attributes[] = {
-	&dev_attr_card_type,
-	&dev_attr_card_voltage,
-	&dev_attr_card_vpp,
-	&dev_attr_card_vcc,
-	&dev_attr_card_insert,
-	&dev_attr_card_pm_state,
-	&dev_attr_card_eject,
-	&dev_attr_card_irq_mask,
-	&dev_attr_available_resources_setup_done,
+static struct attribute *pccard_socket_attributes[] = {
+	&dev_attr_card_type.attr,
+	&dev_attr_card_voltage.attr,
+	&dev_attr_card_vpp.attr,
+	&dev_attr_card_vcc.attr,
+	&dev_attr_card_insert.attr,
+	&dev_attr_card_pm_state.attr,
+	&dev_attr_card_eject.attr,
+	&dev_attr_card_irq_mask.attr,
+	&dev_attr_available_resources_setup_done.attr,
 	NULL,
 };
 
+static const struct attribute_group socket_attrs = {
+	.attrs = pccard_socket_attributes,
+};
+
 static struct bin_attribute pccard_cis_attr = {
 	.attr = { .name = "cis", .mode = S_IRUGO | S_IWUSR },
 	.size = 0x200,
@@ -376,35 +380,21 @@ static struct bin_attribute pccard_cis_a
 	.write = pccard_store_cis,
 };
 
-static int __devinit pccard_sysfs_add_socket(struct device *dev,
-					     struct class_interface *class_intf)
+int pccard_sysfs_add_socket(struct device *dev)
 {
-	struct device_attribute **attr;
 	int ret = 0;
 
-	for (attr = pccard_socket_attributes; *attr; attr++) {
-		ret = device_create_file(dev, *attr);
+	ret = sysfs_create_group(&dev->kobj, &socket_attrs);
+	if (!ret) {
+		ret = sysfs_create_bin_file(&dev->kobj, &pccard_cis_attr);
 		if (ret)
-			break;
+			sysfs_remove_group(&dev->kobj, &socket_attrs);
 	}
-	if (!ret)
-		ret = sysfs_create_bin_file(&dev->kobj, &pccard_cis_attr);
-
 	return ret;
 }
 
-static void __devexit pccard_sysfs_remove_socket(struct device *dev,
-						 struct class_interface *class_intf)
+void pccard_sysfs_remove_socket(struct device *dev)
 {
-	struct device_attribute **attr;
-
 	sysfs_remove_bin_file(&dev->kobj, &pccard_cis_attr);
-	for (attr = pccard_socket_attributes; *attr; attr++)
-		device_remove_file(dev, *attr);
+	sysfs_remove_group(&dev->kobj, &socket_attrs);
 }
-
-struct class_interface pccard_sysfs_interface = {
-	.class = &pcmcia_socket_class,
-	.add_dev = &pccard_sysfs_add_socket,
-	.remove_dev = __devexit_p(&pccard_sysfs_remove_socket),
-};