proc: Supply a function to remove a proc entry by PDE

Supply a function (proc_remove()) to remove a proc entry (and any subtree
rooted there) by proc_dir_entry pointer rather than by name and (optionally)
root dir entry pointer.  This allows us to eliminate all remaining pde->name
accesses outside of procfs.

Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Grant Likely <grant.likely@linaro.or>
cc: linux-acpi@vger.kernel.org
cc: openipmi-developer@lists.sourceforge.net
cc: devicetree-discuss@lists.ozlabs.org
cc: linux-pci@vger.kernel.org
cc: netdev@vger.kernel.org
cc: netfilter-devel@vger.kernel.org
cc: alsa-devel@alsa-project.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

5 files changed, 10 insertions, 38 deletions

diff --git a/drivers/acpi/sbs.c b/drivers/acpi/sbs.c
index a296e08d76b6..b6241eeb1132 100644
--- a/drivers/acpi/sbs.c
+++ b/drivers/acpi/sbs.c
@@ -521,19 +521,6 @@ acpi_sbs_add_fs(struct proc_dir_entry **dir,
 	return 0;
 }
 
-static void
-acpi_sbs_remove_fs(struct proc_dir_entry **dir,
-			   struct proc_dir_entry *parent_dir)
-{
-	if (*dir) {
-		remove_proc_entry(ACPI_SBS_FILE_INFO, *dir);
-		remove_proc_entry(ACPI_SBS_FILE_STATE, *dir);
-		remove_proc_entry(ACPI_SBS_FILE_ALARM, *dir);
-		remove_proc_entry((*dir)->name, parent_dir);
-		*dir = NULL;
-	}
-}
-
 /* Smart Battery Interface */
 static struct proc_dir_entry *acpi_battery_dir = NULL;
 
@@ -836,8 +823,8 @@ static void acpi_battery_remove(struct acpi_sbs *sbs, int id)
 		power_supply_unregister(&battery->bat);
 	}
 #ifdef CONFIG_ACPI_PROCFS_POWER
-	if (battery->proc_entry)
-		acpi_sbs_remove_fs(&battery->proc_entry, acpi_battery_dir);
+	proc_remove(battery->proc_entry);
+	battery->proc_entry = NULL;
 #endif
 }
 
@@ -873,8 +860,8 @@ static void acpi_charger_remove(struct acpi_sbs *sbs)
 	if (sbs->charger.dev)
 		power_supply_unregister(&sbs->charger);
 #ifdef CONFIG_ACPI_PROCFS_POWER
-	if (sbs->charger_entry)
-		acpi_sbs_remove_fs(&sbs->charger_entry, acpi_ac_dir);
+	proc_remove(sbs->charger_entry);
+	sbs->charger_entry = NULL;
 #endif
 }
 
diff --git a/drivers/char/ipmi/ipmi_msghandler.c b/drivers/char/ipmi/ipmi_msghandler.c
index 1420bbbe1a61..4d439d2fcfd6 100644
--- a/drivers/char/ipmi/ipmi_msghandler.c
+++ b/drivers/char/ipmi/ipmi_msghandler.c
@@ -4541,7 +4541,7 @@ static void __exit cleanup_ipmi(void)
 	del_timer_sync(&ipmi_timer);
 
 #ifdef CONFIG_PROC_FS
-	remove_proc_entry(proc_ipmi_root->name, NULL);
+	proc_remove(proc_ipmi_root);
 #endif /* CONFIG_PROC_FS */
 
 	driver_unregister(&ipmidriver.driver);
diff --git a/drivers/misc/sgi-gru/gruprocfs.c b/drivers/misc/sgi-gru/gruprocfs.c
index 950dbe9ecb36..797d7962cc88 100644
--- a/drivers/misc/sgi-gru/gruprocfs.c
+++ b/drivers/misc/sgi-gru/gruprocfs.c
@@ -355,7 +355,7 @@ static void delete_proc_files(void)
 		for (p = proc_files; p->name; p++)
 			if (p->entry)
 				remove_proc_entry(p->name, proc_gru);
-		remove_proc_entry("gru", proc_gru->parent);
+		proc_remove(proc_gru);
 	}
 }
 
diff --git a/drivers/of/base.c b/drivers/of/base.c
index 321d3ef05006..9c704369eda8 100644
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -1452,16 +1452,7 @@ int of_attach_node(struct device_node *np)
 #ifdef CONFIG_PROC_DEVICETREE
 static void of_remove_proc_dt_entry(struct device_node *dn)
 {
-	struct device_node *parent = dn->parent;
-	struct property *prop = dn->properties;
-
-	while (prop) {
-		remove_proc_entry(prop->name, dn->pde);
-		prop = prop->next;
-	}
-
-	if (dn->pde)
-		remove_proc_entry(dn->pde->name, parent->pde);
+	proc_remove(dn->pde);
 }
 #else
 static void of_remove_proc_dt_entry(struct device_node *dn)
diff --git a/drivers/pci/proc.c b/drivers/pci/proc.c
index 7cde7c131fd0..08126087ec31 100644
--- a/drivers/pci/proc.c
+++ b/drivers/pci/proc.c
@@ -427,20 +427,14 @@ int pci_proc_attach_device(struct pci_dev *dev)
 
 int pci_proc_detach_device(struct pci_dev *dev)
 {
-	struct proc_dir_entry *e;
-
-	if ((e = dev->procent)) {
-		remove_proc_entry(e->name, dev->bus->procdir);
-		dev->procent = NULL;
-	}
+	proc_remove(dev->procent);
+	dev->procent = NULL;
 	return 0;
 }
 
 int pci_proc_detach_bus(struct pci_bus* bus)
 {
-	struct proc_dir_entry *de = bus->procdir;
-	if (de)
-		remove_proc_entry(de->name, proc_bus_pci_dir);
+	proc_remove(bus->procdir);
 	return 0;
 }