Merge tag 'driver-core-6.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core and debugfs updates from Greg KH:
 "Here is the big set of driver core and debugfs updates for 6.14-rc1.

  Included in here is a bunch of driver core, PCI, OF, and platform rust
  bindings (all acked by the different subsystem maintainers), hence the
  merge conflict with the rust tree, and some driver core api updates to
  mark things as const, which will also require some fixups due to new
  stuff coming in through other trees in this merge window.

  There are also a bunch of debugfs updates from Al, and there is at
  least one user that does have a regression with these, but Al is
  working on tracking down the fix for it. In my use (and everyone
  else's linux-next use), it does not seem like a big issue at the
  moment.

  Here's a short list of the things in here:

   - driver core rust bindings for PCI, platform, OF, and some i/o
     functions.

     We are almost at the "write a real driver in rust" stage now,
     depending on what you want to do.

   - misc device rust bindings and a sample driver to show how to use
     them

   - debugfs cleanups in the fs as well as the users of the fs api for
     places where drivers got it wrong or were unnecessarily doing
     things in complex ways.

   - driver core const work, making more of the api take const * for
     different parameters to make the rust bindings easier overall.

   - other small fixes and updates

  All of these have been in linux-next with all of the aforementioned
  merge conflicts, and the one debugfs issue, which looks to be resolved
  "soon""

* tag 'driver-core-6.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (95 commits)
  rust: device: Use as_char_ptr() to avoid explicit cast
  rust: device: Replace CString with CStr in property_present()
  devcoredump: Constify 'struct bin_attribute'
  devcoredump: Define 'struct bin_attribute' through macro
  rust: device: Add property_present()
  saner replacement for debugfs_rename()
  orangefs-debugfs: don't mess with ->d_name
  octeontx2: don't mess with ->d_parent or ->d_parent->d_name
  arm_scmi: don't mess with ->d_parent->d_name
  slub: don't mess with ->d_name
  sof-client-ipc-flood-test: don't mess with ->d_name
  qat: don't mess with ->d_name
  xhci: don't mess with ->d_iname
  mtu3: don't mess wiht ->d_iname
  greybus/camera - stop messing with ->d_iname
  mediatek: stop messing with ->d_iname
  netdevsim: don't embed file_operations into your structs
  b43legacy: make use of debugfs_get_aux()
  b43: stop embedding struct file_operations into their objects
  carl9170: stop embedding file_operations into their objects
  ...

3 files changed, 25 insertions, 71 deletions

diff --git a/drivers/usb/host/xhci-debugfs.c b/drivers/usb/host/xhci-debugfs.c
index 4f0c1b96e208..1f5ef174abea 100644
--- a/drivers/usb/host/xhci-debugfs.c
+++ b/drivers/usb/host/xhci-debugfs.c
@@ -232,16 +232,7 @@ static struct xhci_file_map ring_files[] = {
 
 static int xhci_ring_open(struct inode *inode, struct file *file)
 {
-	int			i;
-	struct xhci_file_map	*f_map;
-	const char		*file_name = file_dentry(file)->d_iname;
-
-	for (i = 0; i < ARRAY_SIZE(ring_files); i++) {
-		f_map = &ring_files[i];
-
-		if (strcmp(f_map->name, file_name) == 0)
-			break;
-	}
+	const struct xhci_file_map *f_map = debugfs_get_aux(file);
 
 	return single_open(file, f_map->show, inode->i_private);
 }
@@ -318,16 +309,7 @@ static struct xhci_file_map context_files[] = {
 
 static int xhci_context_open(struct inode *inode, struct file *file)
 {
-	int			i;
-	struct xhci_file_map	*f_map;
-	const char		*file_name = file_dentry(file)->d_iname;
-
-	for (i = 0; i < ARRAY_SIZE(context_files); i++) {
-		f_map = &context_files[i];
-
-		if (strcmp(f_map->name, file_name) == 0)
-			break;
-	}
+	const struct xhci_file_map *f_map = debugfs_get_aux(file);
 
 	return single_open(file, f_map->show, inode->i_private);
 }
@@ -410,7 +392,8 @@ static void xhci_debugfs_create_files(struct xhci_hcd *xhci,
 	int			i;
 
 	for (i = 0; i < nentries; i++)
-		debugfs_create_file(files[i].name, 0444, parent, data, fops);
+		debugfs_create_file_aux(files[i].name, 0444, parent,
+					data, &files[i], fops);
 }
 
 static struct dentry *xhci_debugfs_create_ring_dir(struct xhci_hcd *xhci,
diff --git a/drivers/usb/mtu3/mtu3_debugfs.c b/drivers/usb/mtu3/mtu3_debugfs.c
index 9bd74c505872..c003049bafbf 100644
--- a/drivers/usb/mtu3/mtu3_debugfs.c
+++ b/drivers/usb/mtu3/mtu3_debugfs.c
@@ -257,16 +257,7 @@ static const struct mtu3_file_map mtu3_ep_files[] = {
 
 static int mtu3_ep_open(struct inode *inode, struct file *file)
 {
-	const char *file_name = file_dentry(file)->d_iname;
-	const struct mtu3_file_map *f_map;
-	int i;
-
-	for (i = 0; i < ARRAY_SIZE(mtu3_ep_files); i++) {
-		f_map = &mtu3_ep_files[i];
-
-		if (strcmp(f_map->name, file_name) == 0)
-			break;
-	}
+	const struct mtu3_file_map *f_map = debugfs_get_aux(file);
 
 	return single_open(file, f_map->show, inode->i_private);
 }
@@ -289,17 +280,8 @@ static const struct debugfs_reg32 mtu3_prb_regs[] = {
 
 static int mtu3_probe_show(struct seq_file *sf, void *unused)
 {
-	const char *file_name = file_dentry(sf->file)->d_iname;
 	struct mtu3 *mtu = sf->private;
-	const struct debugfs_reg32 *regs;
-	int i;
-
-	for (i = 0; i < ARRAY_SIZE(mtu3_prb_regs); i++) {
-		regs = &mtu3_prb_regs[i];
-
-		if (strcmp(regs->name, file_name) == 0)
-			break;
-	}
+	const struct debugfs_reg32 *regs = debugfs_get_aux(sf->file);
 
 	seq_printf(sf, "0x%04x - 0x%08x\n", (u32)regs->offset,
 		   mtu3_readl(mtu->ippc_base, (u32)regs->offset));
@@ -315,13 +297,11 @@ static int mtu3_probe_open(struct inode *inode, struct file *file)
 static ssize_t mtu3_probe_write(struct file *file, const char __user *ubuf,
 				size_t count, loff_t *ppos)
 {
-	const char *file_name = file_dentry(file)->d_iname;
 	struct seq_file *sf = file->private_data;
 	struct mtu3 *mtu = sf->private;
-	const struct debugfs_reg32 *regs;
+	const struct debugfs_reg32 *regs = debugfs_get_aux(file);
 	char buf[32];
 	u32 val;
-	int i;
 
 	if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
 		return -EFAULT;
@@ -329,12 +309,6 @@ static ssize_t mtu3_probe_write(struct file *file, const char __user *ubuf,
 	if (kstrtou32(buf, 0, &val))
 		return -EINVAL;
 
-	for (i = 0; i < ARRAY_SIZE(mtu3_prb_regs); i++) {
-		regs = &mtu3_prb_regs[i];
-
-		if (strcmp(regs->name, file_name) == 0)
-			break;
-	}
 	mtu3_writel(mtu->ippc_base, (u32)regs->offset, val);
 
 	return count;
@@ -359,8 +333,8 @@ static void mtu3_debugfs_create_prb_files(struct mtu3 *mtu)
 
 	for (i = 0; i < ARRAY_SIZE(mtu3_prb_regs); i++) {
 		regs = &mtu3_prb_regs[i];
-		debugfs_create_file(regs->name, 0644, dir_prb,
-				    mtu, &mtu3_probe_fops);
+		debugfs_create_file_aux(regs->name, 0644, dir_prb,
+				    mtu, regs, &mtu3_probe_fops);
 	}
 
 	mtu3_debugfs_regset(mtu, mtu->ippc_base, mtu3_prb_regs,
@@ -380,8 +354,8 @@ static void mtu3_debugfs_create_ep_dir(struct mtu3_ep *mep,
 	for (i = 0; i < ARRAY_SIZE(mtu3_ep_files); i++) {
 		files = &mtu3_ep_files[i];
 
-		debugfs_create_file(files->name, 0444, dir_ep,
-				    mep, &mtu3_ep_fops);
+		debugfs_create_file_aux(files->name, 0444, dir_ep,
+				    mep, files, &mtu3_ep_fops);
 	}
 }
 
diff --git a/drivers/usb/typec/class.c b/drivers/usb/typec/class.c
index a137e105cc55..9c76c3d0c6cf 100644
--- a/drivers/usb/typec/class.c
+++ b/drivers/usb/typec/class.c
@@ -230,10 +230,10 @@ static const char * const usb_modes[] = {
 /* ------------------------------------------------------------------------- */
 /* Alternate Modes */
 
-static int altmode_match(struct device *dev, void *data)
+static int altmode_match(struct device *dev, const void *data)
 {
 	struct typec_altmode *adev = to_typec_altmode(dev);
-	struct typec_device_id *id = data;
+	const struct typec_device_id *id = data;
 
 	if (!is_typec_altmode(dev))
 		return 0;
@@ -1284,11 +1284,6 @@ const struct device_type typec_cable_dev_type = {
 	.release = typec_cable_release,
 };
 
-static int cable_match(struct device *dev, void *data)
-{
-	return is_typec_cable(dev);
-}
-
 /**
  * typec_cable_get - Get a reference to the USB Type-C cable
  * @port: The USB Type-C Port the cable is connected to
@@ -1300,7 +1295,8 @@ struct typec_cable *typec_cable_get(struct typec_port *port)
 {
 	struct device *dev;
 
-	dev = device_find_child(&port->dev, NULL, cable_match);
+	dev = device_find_child(&port->dev, &typec_cable_dev_type,
+				device_match_type);
 	if (!dev)
 		return NULL;
 
@@ -2030,16 +2026,12 @@ const struct device_type typec_port_dev_type = {
 /* --------------------------------------- */
 /* Driver callbacks to report role updates */
 
-static int partner_match(struct device *dev, void *data)
-{
-	return is_typec_partner(dev);
-}
-
 static struct typec_partner *typec_get_partner(struct typec_port *port)
 {
 	struct device *dev;
 
-	dev = device_find_child(&port->dev, NULL, partner_match);
+	dev = device_find_child(&port->dev, &typec_partner_dev_type,
+				device_match_type);
 	if (!dev)
 		return NULL;
 
@@ -2172,7 +2164,9 @@ void typec_set_pwr_opmode(struct typec_port *port,
 	sysfs_notify(&port->dev.kobj, NULL, "power_operation_mode");
 	kobject_uevent(&port->dev.kobj, KOBJ_CHANGE);
 
-	partner_dev = device_find_child(&port->dev, NULL, partner_match);
+	partner_dev = device_find_child(&port->dev,
+					&typec_partner_dev_type,
+					device_match_type);
 	if (partner_dev) {
 		struct typec_partner *partner = to_typec_partner(partner_dev);
 
@@ -2336,7 +2330,9 @@ int typec_get_negotiated_svdm_version(struct typec_port *port)
 	enum usb_pd_svdm_ver svdm_version;
 	struct device *partner_dev;
 
-	partner_dev = device_find_child(&port->dev, NULL, partner_match);
+	partner_dev = device_find_child(&port->dev,
+					&typec_partner_dev_type,
+					device_match_type);
 	if (!partner_dev)
 		return -ENODEV;
 
@@ -2363,7 +2359,8 @@ int typec_get_cable_svdm_version(struct typec_port *port)
 	enum usb_pd_svdm_ver svdm_version;
 	struct device *cable_dev;
 
-	cable_dev = device_find_child(&port->dev, NULL, cable_match);
+	cable_dev = device_find_child(&port->dev, &typec_cable_dev_type,
+				      device_match_type);
 	if (!cable_dev)
 		return -ENODEV;