Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending

Pull SCSI target updates from Nicholas Bellinger:
 "This series contains HCH's changes to absorb configfs attribute
  ->show() + ->store() function pointer usage from it's original
  tree-wide consumers, into common configfs code.

  It includes usb-gadget, target w/ drivers, netconsole and ocfs2
  changes to realize the improved simplicity, that now renders the
  original include/target/configfs_macros.h CPP magic for fabric drivers
  and others, unnecessary and obsolete.

  And with common code in place, new configfs attributes can be added
  easier than ever before.

  Note, there are further improvements in-flight from other folks for
  v4.5 code in configfs land, plus number of target fixes for post -rc1
  code"

In the meantime, a new user of the now-removed old configfs API came in
through the char/misc tree in commit 7bd1d4093c2f ("stm class: Introduce
an abstraction for System Trace Module devices").

This merge resolution comes from Alexander Shishkin, who updated his stm
class tracing abstraction to account for the removal of the old
show_attribute and store_attribute methods in commit 517982229f78
("configfs: remove old API") from this pull.  As Alexander says about
that patch:

 "There's no need to keep an extra wrapper structure per item and the
  awkward show_attribute/store_attribute item ops are no longer needed.

  This patch converts policy code to the new api, all the while making
  the code quite a bit smaller and easier on the eyes.

  Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>"

That patch was folded into the merge so that the tree should be fully
bisectable.

* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: (23 commits)
  configfs: remove old API
  ocfs2/cluster: use per-attribute show and store methods
  ocfs2/cluster: move locking into attribute store methods
  netconsole: use per-attribute show and store methods
  target: use per-attribute show and store methods
  spear13xx_pcie_gadget: use per-attribute show and store methods
  dlm: use per-attribute show and store methods
  usb-gadget/f_serial: use per-attribute show and store methods
  usb-gadget/f_phonet: use per-attribute show and store methods
  usb-gadget/f_obex: use per-attribute show and store methods
  usb-gadget/f_uac2: use per-attribute show and store methods
  usb-gadget/f_uac1: use per-attribute show and store methods
  usb-gadget/f_mass_storage: use per-attribute show and store methods
  usb-gadget/f_sourcesink: use per-attribute show and store methods
  usb-gadget/f_printer: use per-attribute show and store methods
  usb-gadget/f_midi: use per-attribute show and store methods
  usb-gadget/f_loopback: use per-attribute show and store methods
  usb-gadget/ether: use per-attribute show and store methods
  usb-gadget/f_acm: use per-attribute show and store methods
  usb-gadget/f_hid: use per-attribute show and store methods
  ...

1 files changed, 71 insertions, 145 deletions

diff --git a/drivers/misc/spear13xx_pcie_gadget.c b/drivers/misc/spear13xx_pcie_gadget.c
index b8374cdaf9c9..ee120dcbb3e6 100644
--- a/drivers/misc/spear13xx_pcie_gadget.c
+++ b/drivers/misc/spear13xx_pcie_gadget.c
@@ -220,11 +220,17 @@ static irqreturn_t spear_pcie_gadget_irq(int irq, void *dev_id)
 /*
  * configfs interfaces show/store functions
  */
-static ssize_t pcie_gadget_show_link(
-		struct spear_pcie_gadget_config *config,
-		char *buf)
+
+static struct pcie_gadget_target *to_target(struct config_item *item)
 {
-	struct pcie_app_reg __iomem *app_reg = config->va_app_base;
+	return item ?
+		container_of(to_configfs_subsystem(to_config_group(item)),
+				struct pcie_gadget_target, subsys) : NULL;
+}
+
+static ssize_t pcie_gadget_link_show(struct config_item *item, char *buf)
+{
+	struct pcie_app_reg __iomem *app_reg = to_target(item)->va_app_base;
 
 	if (readl(&app_reg->app_status_1) & ((u32)1 << XMLH_LINK_UP_ID))
 		return sprintf(buf, "UP");
@@ -232,11 +238,10 @@ static ssize_t pcie_gadget_show_link(
 		return sprintf(buf, "DOWN");
 }
 
-static ssize_t pcie_gadget_store_link(
-		struct spear_pcie_gadget_config *config,
+static ssize_t pcie_gadget_link_store(struct config_item *item,
 		const char *buf, size_t count)
 {
-	struct pcie_app_reg __iomem *app_reg = config->va_app_base;
+	struct pcie_app_reg __iomem *app_reg = to_target(item)->va_app_base;
 
 	if (sysfs_streq(buf, "UP"))
 		writel(readl(&app_reg->app_ctrl_0) | (1 << APP_LTSSM_ENABLE_ID),
@@ -250,17 +255,15 @@ static ssize_t pcie_gadget_store_link(
 	return count;
 }
 
-static ssize_t pcie_gadget_show_int_type(
-		struct spear_pcie_gadget_config *config,
-		char *buf)
+static ssize_t pcie_gadget_int_type_show(struct config_item *item, char *buf)
 {
-	return sprintf(buf, "%s", config->int_type);
+	return sprintf(buf, "%s", to_target(item)->int_type);
 }
 
-static ssize_t pcie_gadget_store_int_type(
-		struct spear_pcie_gadget_config *config,
+static ssize_t pcie_gadget_int_type_store(struct config_item *item,
 		const char *buf, size_t count)
 {
+	struct spear_pcie_gadget_config *config = to_target(item)
 	u32 cap, vec, flags;
 	ulong vector;
 
@@ -288,11 +291,10 @@ static ssize_t pcie_gadget_store_int_type(
 	return count;
 }
 
-static ssize_t pcie_gadget_show_no_of_msi(
-		struct spear_pcie_gadget_config *config,
-		char *buf)
+static ssize_t pcie_gadget_no_of_msi_show(struct config_item *item, char *buf)
 {
-	struct pcie_app_reg __iomem *app_reg = config->va_app_base;
+	struct spear_pcie_gadget_config *config = to_target(item)
+	struct pcie_app_reg __iomem *app_reg = to_target(item)->va_app_base;
 	u32 cap, vec, flags;
 	ulong vector;
 
@@ -313,13 +315,12 @@ static ssize_t pcie_gadget_show_no_of_msi(
 	return sprintf(buf, "%lu", vector);
 }
 
-static ssize_t pcie_gadget_store_no_of_msi(
-		struct spear_pcie_gadget_config *config,
+static ssize_t pcie_gadget_no_of_msi_store(struct config_item *item,
 		const char *buf, size_t count)
 {
 	int ret;
 
-	ret = kstrtoul(buf, 0, &config->requested_msi);
+	ret = kstrtoul(buf, 0, &to_target(item)->requested_msi);
 	if (ret)
 		return ret;
 
@@ -329,11 +330,10 @@ static ssize_t pcie_gadget_store_no_of_msi(
 	return count;
 }
 
-static ssize_t pcie_gadget_store_inta(
-		struct spear_pcie_gadget_config *config,
+static ssize_t pcie_gadget_inta_store(struct config_item *item,
 		const char *buf, size_t count)
 {
-	struct pcie_app_reg __iomem *app_reg = config->va_app_base;
+	struct pcie_app_reg __iomem *app_reg = to_target(item)->va_app_base;
 	ulong en;
 	int ret;
 
@@ -351,10 +351,10 @@ static ssize_t pcie_gadget_store_inta(
 	return count;
 }
 
-static ssize_t pcie_gadget_store_send_msi(
-		struct spear_pcie_gadget_config *config,
+static ssize_t pcie_gadget_send_msi_store(struct config_item *item,
 		const char *buf, size_t count)
 {
+	struct spear_pcie_gadget_config *config = to_target(item)
 	struct pcie_app_reg __iomem *app_reg = config->va_app_base;
 	ulong vector;
 	u32 ven_msi;
@@ -388,19 +388,16 @@ static ssize_t pcie_gadget_store_send_msi(
 	return count;
 }
 
-static ssize_t pcie_gadget_show_vendor_id(
-		struct spear_pcie_gadget_config *config,
-		char *buf)
+static ssize_t pcie_gadget_vendor_id_show(struct config_item *item, char *buf)
 {
 	u32 id;
 
-	spear_dbi_read_reg(config, PCI_VENDOR_ID, 2, &id);
+	spear_dbi_read_reg(to_target(item), PCI_VENDOR_ID, 2, &id);
 
 	return sprintf(buf, "%x", id);
 }
 
-static ssize_t pcie_gadget_store_vendor_id(
-		struct spear_pcie_gadget_config *config,
+static ssize_t pcie_gadget_vendor_id_store(struct config_item *item,
 		const char *buf, size_t count)
 {
 	ulong id;
@@ -410,24 +407,21 @@ static ssize_t pcie_gadget_store_vendor_id(
 	if (ret)
 		return ret;
 
-	spear_dbi_write_reg(config, PCI_VENDOR_ID, 2, id);
+	spear_dbi_write_reg(to_target(item), PCI_VENDOR_ID, 2, id);
 
 	return count;
 }
 
-static ssize_t pcie_gadget_show_device_id(
-		struct spear_pcie_gadget_config *config,
-		char *buf)
+static ssize_t pcie_gadget_device_id_show(struct config_item *item, char *buf)
 {
 	u32 id;
 
-	spear_dbi_read_reg(config, PCI_DEVICE_ID, 2, &id);
+	spear_dbi_read_reg(to_target(item), PCI_DEVICE_ID, 2, &id);
 
 	return sprintf(buf, "%x", id);
 }
 
-static ssize_t pcie_gadget_store_device_id(
-		struct spear_pcie_gadget_config *config,
+static ssize_t pcie_gadget_device_id_store(struct config_item *item,
 		const char *buf, size_t count)
 {
 	ulong id;
@@ -437,22 +431,20 @@ static ssize_t pcie_gadget_store_device_id(
 	if (ret)
 		return ret;
 
-	spear_dbi_write_reg(config, PCI_DEVICE_ID, 2, id);
+	spear_dbi_write_reg(to_target(item), PCI_DEVICE_ID, 2, id);
 
 	return count;
 }
 
-static ssize_t pcie_gadget_show_bar0_size(
-		struct spear_pcie_gadget_config *config,
-		char *buf)
+static ssize_t pcie_gadget_bar0_size_show(struct config_item *item, char *buf)
 {
-	return sprintf(buf, "%lx", config->bar0_size);
+	return sprintf(buf, "%lx", to_target(item)->bar0_size);
 }
 
-static ssize_t pcie_gadget_store_bar0_size(
-		struct spear_pcie_gadget_config *config,
+static ssize_t pcie_gadget_bar0_size_store(struct config_item *item,
 		const char *buf, size_t count)
 {
+	struct spear_pcie_gadget_config *config = to_target(item)
 	ulong size;
 	u32 pos, pos1;
 	u32 no_of_bit = 0;
@@ -489,21 +481,20 @@ static ssize_t pcie_gadget_store_bar0_size(
 	return count;
 }
 
-static ssize_t pcie_gadget_show_bar0_address(
-		struct spear_pcie_gadget_config *config,
+static ssize_t pcie_gadget_bar0_address_show(struct config_item *item,
 		char *buf)
 {
-	struct pcie_app_reg __iomem *app_reg = config->va_app_base;
+	struct pcie_app_reg __iomem *app_reg = to_target(item)->va_app_base;
 
 	u32 address = readl(&app_reg->pim0_mem_addr_start);
 
 	return sprintf(buf, "%x", address);
 }
 
-static ssize_t pcie_gadget_store_bar0_address(
-		struct spear_pcie_gadget_config *config,
+static ssize_t pcie_gadget_bar0_address_store(struct config_item *item,
 		const char *buf, size_t count)
 {
+	struct spear_pcie_gadget_config *config = to_target(item)
 	struct pcie_app_reg __iomem *app_reg = config->va_app_base;
 	ulong address;
 	int ret;
@@ -524,15 +515,13 @@ static ssize_t pcie_gadget_store_bar0_address(
 	return count;
 }
 
-static ssize_t pcie_gadget_show_bar0_rw_offset(
-		struct spear_pcie_gadget_config *config,
+static ssize_t pcie_gadget_bar0_rw_offset_show(struct config_item *item,
 		char *buf)
 {
-	return sprintf(buf, "%lx", config->bar0_rw_offset);
+	return sprintf(buf, "%lx", to_target(item)->bar0_rw_offset);
 }
 
-static ssize_t pcie_gadget_store_bar0_rw_offset(
-		struct spear_pcie_gadget_config *config,
+static ssize_t pcie_gadget_bar0_rw_offset_store(struct config_item *item,
 		const char *buf, size_t count)
 {
 	ulong offset;
@@ -545,15 +534,14 @@ static ssize_t pcie_gadget_store_bar0_rw_offset(
 	if (offset % 4)
 		return -EINVAL;
 
-	config->bar0_rw_offset = offset;
+	to_target(item)->bar0_rw_offset = offset;
 
 	return count;
 }
 
-static ssize_t pcie_gadget_show_bar0_data(
-		struct spear_pcie_gadget_config *config,
-		char *buf)
+static ssize_t pcie_gadget_bar0_data_show(struct config_item *item, char *buf)
 {
+	struct spear_pcie_gadget_config *config = to_target(item)
 	ulong data;
 
 	if (!config->va_bar0_address)
@@ -564,10 +552,10 @@ static ssize_t pcie_gadget_show_bar0_data(
 	return sprintf(buf, "%lx", data);
 }
 
-static ssize_t pcie_gadget_store_bar0_data(
-		struct spear_pcie_gadget_config *config,
+static ssize_t pcie_gadget_bar0_data_store(struct config_item *item,
 		const char *buf, size_t count)
 {
+	struct spear_pcie_gadget_config *config = to_target(item)
 	ulong data;
 	int ret;
 
@@ -583,97 +571,35 @@ static ssize_t pcie_gadget_store_bar0_data(
 	return count;
 }
 
-/*
- * Attribute definitions.
- */
-
-#define PCIE_GADGET_TARGET_ATTR_RO(_name)				\
-static struct pcie_gadget_target_attr pcie_gadget_target_##_name =	\
-	__CONFIGFS_ATTR(_name, S_IRUGO, pcie_gadget_show_##_name, NULL)
-
-#define PCIE_GADGET_TARGET_ATTR_WO(_name)				\
-static struct pcie_gadget_target_attr pcie_gadget_target_##_name =	\
-	__CONFIGFS_ATTR(_name, S_IWUSR, NULL, pcie_gadget_store_##_name)
-
-#define PCIE_GADGET_TARGET_ATTR_RW(_name)				\
-static struct pcie_gadget_target_attr pcie_gadget_target_##_name =	\
-	__CONFIGFS_ATTR(_name, S_IRUGO | S_IWUSR, pcie_gadget_show_##_name, \
-			pcie_gadget_store_##_name)
-PCIE_GADGET_TARGET_ATTR_RW(link);
-PCIE_GADGET_TARGET_ATTR_RW(int_type);
-PCIE_GADGET_TARGET_ATTR_RW(no_of_msi);
-PCIE_GADGET_TARGET_ATTR_WO(inta);
-PCIE_GADGET_TARGET_ATTR_WO(send_msi);
-PCIE_GADGET_TARGET_ATTR_RW(vendor_id);
-PCIE_GADGET_TARGET_ATTR_RW(device_id);
-PCIE_GADGET_TARGET_ATTR_RW(bar0_size);
-PCIE_GADGET_TARGET_ATTR_RW(bar0_address);
-PCIE_GADGET_TARGET_ATTR_RW(bar0_rw_offset);
-PCIE_GADGET_TARGET_ATTR_RW(bar0_data);
+CONFIGFS_ATTR(pcie_gadget_, link);
+CONFIGFS_ATTR(pcie_gadget_, int_type);
+CONFIGFS_ATTR(pcie_gadget_, no_of_msi);
+CONFIGFS_ATTR_WO(pcie_gadget_, inta);
+CONFIGFS_ATTR_WO(pcie_gadget_, send_msi);
+CONFIGFS_ATTR(pcie_gadget_, vendor_id);
+CONFIGFS_ATTR(pcie_gadget_, device_id);
+CONFIGFS_ATTR(pcie_gadget_, bar0_size);
+CONFIGFS_ATTR(pcie_gadget_, bar0_address);
+CONFIGFS_ATTR(pcie_gadget_, bar0_rw_offset);
+CONFIGFS_ATTR(pcie_gadget_, bar0_data);
 
 static struct configfs_attribute *pcie_gadget_target_attrs[] = {
-	&pcie_gadget_target_link.attr,
-	&pcie_gadget_target_int_type.attr,
-	&pcie_gadget_target_no_of_msi.attr,
-	&pcie_gadget_target_inta.attr,
-	&pcie_gadget_target_send_msi.attr,
-	&pcie_gadget_target_vendor_id.attr,
-	&pcie_gadget_target_device_id.attr,
-	&pcie_gadget_target_bar0_size.attr,
-	&pcie_gadget_target_bar0_address.attr,
-	&pcie_gadget_target_bar0_rw_offset.attr,
-	&pcie_gadget_target_bar0_data.attr,
+	&pcie_gadget_attr_link,
+	&pcie_gadget_attr_int_type,
+	&pcie_gadget_attr_no_of_msi,
+	&pcie_gadget_attr_inta,
+	&pcie_gadget_attr_send_msi,
+	&pcie_gadget_attr_vendor_id,
+	&pcie_gadget_attr_device_id,
+	&pcie_gadget_attr_bar0_size,
+	&pcie_gadget_attr_bar0_address,
+	&pcie_gadget_attr_bar0_rw_offset,
+	&pcie_gadget_attr_bar0_data,
 	NULL,
 };
 
-static struct pcie_gadget_target *to_target(struct config_item *item)
-{
-	return item ?
-		container_of(to_configfs_subsystem(to_config_group(item)),
-				struct pcie_gadget_target, subsys) : NULL;
-}
-
-/*
- * Item operations and type for pcie_gadget_target.
- */
-
-static ssize_t pcie_gadget_target_attr_show(struct config_item *item,
-					   struct configfs_attribute *attr,
-					   char *buf)
-{
-	ssize_t ret = -EINVAL;
-	struct pcie_gadget_target *target = to_target(item);
-	struct pcie_gadget_target_attr *t_attr =
-		container_of(attr, struct pcie_gadget_target_attr, attr);
-
-	if (t_attr->show)
-		ret = t_attr->show(&target->config, buf);
-	return ret;
-}
-
-static ssize_t pcie_gadget_target_attr_store(struct config_item *item,
-					struct configfs_attribute *attr,
-					const char *buf,
-					size_t count)
-{
-	ssize_t ret = -EINVAL;
-	struct pcie_gadget_target *target = to_target(item);
-	struct pcie_gadget_target_attr *t_attr =
-		container_of(attr, struct pcie_gadget_target_attr, attr);
-
-	if (t_attr->store)
-		ret = t_attr->store(&target->config, buf, count);
-	return ret;
-}
-
-static struct configfs_item_operations pcie_gadget_target_item_ops = {
-	.show_attribute		= pcie_gadget_target_attr_show,
-	.store_attribute	= pcie_gadget_target_attr_store,
-};
-
 static struct config_item_type pcie_gadget_target_type = {
 	.ct_attrs		= pcie_gadget_target_attrs,
-	.ct_item_ops		= &pcie_gadget_target_item_ops,
 	.ct_owner		= THIS_MODULE,
 };