proc: Add proc_mkdir_data()

Add proc_mkdir_data() to allow procfs directories to be created that are
annotated at the time of creation with private data rather than doing this
post-creation.  This means no access is then required to the proc_dir_entry
struct to set this.

Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
cc: Neela Syam Kolli <megaraidlinux@lsi.com>
cc: Jerry Chuang <jerry-chuang@realtek.com>
cc: linux-scsi@vger.kernel.org
cc: devel@driverdev.osuosl.org
cc: linux-wireless@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

3 files changed, 5 insertions, 10 deletions

diff --git a/drivers/message/i2o/i2o_proc.c b/drivers/message/i2o/i2o_proc.c
index 70a840f9b283..b7d87cd227a9 100644
--- a/drivers/message/i2o/i2o_proc.c
+++ b/drivers/message/i2o/i2o_proc.c
@@ -1913,14 +1913,12 @@ static void i2o_proc_device_add(struct proc_dir_entry *dir,
 
         osm_debug("adding device /proc/i2o/%s/%s\n", dev->iop->name, buff);
 
-        devdir = proc_mkdir(buff, dir);
+        devdir = proc_mkdir_data(buff, 0, dir, dev);
         if (!devdir) {
                 osm_warn("Could not allocate procdir!\n");
                 return;
         }
 
-        devdir->data = dev;
-
         i2o_proc_create_entries(devdir, generic_dev_entries, dev);
 
         /* Inform core that we want updates about this device's status */
@@ -1954,12 +1952,10 @@ static int i2o_proc_iop_add(struct proc_dir_entry *dir,
 
         osm_debug("adding IOP /proc/i2o/%s\n", c->name);
 
-        iopdir = proc_mkdir(c->name, dir);
+        iopdir = proc_mkdir_data(c->name, 0, dir, c);
         if (!iopdir)
                 return -1;
 
-        iopdir->data = c;
-
         i2o_proc_create_entries(iopdir, i2o_proc_generic_iop_entries, c);
 
         list_for_each_entry(dev, &c->devices, list)
diff --git a/drivers/scsi/megaraid.c b/drivers/scsi/megaraid.c
index a1c90bd34e78..ef3384d39e11 100644
--- a/drivers/scsi/megaraid.c
+++ b/drivers/scsi/megaraid.c
@@ -2818,12 +2818,12 @@ mega_create_proc_entry(int index, struct proc_dir_entry *parent)
 
         sprintf(string, "hba%d", adapter->host->host_no);
 
-        dir = adapter->controller_proc_dir_entry = proc_mkdir(string, parent);
+        dir = adapter->controller_proc_dir_entry =
+                proc_mkdir_data(string, 0, parent, adapter);
         if(!dir) {
                 printk(KERN_WARNING "\nmegaraid: proc_mkdir failed\n");
                 return;
         }
-        dir->data = adapter;
 
         for (f = mega_proc_files; f->name; f++) {
                 de = proc_create_data(f->name, S_IRUSR, dir, &mega_proc_fops,
diff --git a/drivers/staging/rtl8192u/r8192U_core.c b/drivers/staging/rtl8192u/r8192U_core.c
index 433c3df95de0..d81d7d55f25e 100644
--- a/drivers/staging/rtl8192u/r8192U_core.c
+++ b/drivers/staging/rtl8192u/r8192U_core.c
@@ -672,13 +672,12 @@ void rtl8192_proc_init_one(struct net_device *dev)
         struct r8192_priv *priv = (struct r8192_priv *)ieee80211_priv(dev);
 
         if (rtl8192_proc) {
-                priv->dir_dev = proc_mkdir(dev->name, rtl8192_proc);
+                priv->dir_dev = proc_mkdir_data(dev->name, 0, rtl8192_proc, dev);
                 if (!priv->dir_dev) {
                         RT_TRACE(COMP_ERR, "Unable to initialize /proc/net/rtl8192/%s\n",
                                  dev->name);
                         return;
                 }
-                priv->dir_dev->data = dev;
 
                 for (f = rtl8192_proc_files; f->name[0]; f++) {
                         if (!proc_create_data(f->name, S_IFREG | S_IRUGO,