[PATCH] isdn: cleanup i_rdev udage

[linux-2.6] / drivers / isdn / i4l / isdn_ppp.c

diff --git a/drivers/isdn/i4l/isdn_ppp.c b/drivers/isdn/i4l/isdn_ppp.c
index 1a19a0f894288907c30ea2fbb91790db3d67a584..119412d6bd15d05d253504bada35acbde7b3fc54 100644 (file)
--- a/drivers/isdn/i4l/isdn_ppp.c
+++ b/drivers/isdn/i4l/isdn_ppp.c
@@ -9,7 +9,6 @@
  *
  */
 
-#include <linux/config.h>
 #include <linux/isdn.h>
 #include <linux/poll.h>
 #include <linux/ppp-comp.h>
@@ -109,7 +108,7 @@ isdn_ppp_free(isdn_net_local * lp)
 {
        struct ippp_struct *is;
 
-       if (lp->ppp_slot < 0 || lp->ppp_slot > ISDN_MAX_CHANNELS) {
+       if (lp->ppp_slot < 0 || lp->ppp_slot >= ISDN_MAX_CHANNELS) {
                printk(KERN_ERR "%s: ppp_slot(%d) out of range\n",
                        __FUNCTION__, lp->ppp_slot);
                return 0;
@@ -126,7 +125,7 @@ isdn_ppp_free(isdn_net_local * lp)
        lp->netdev->pb->ref_ct--;
        spin_unlock(&lp->netdev->pb->lock);
 #endif /* CONFIG_ISDN_MPP */
-       if (lp->ppp_slot < 0 || lp->ppp_slot > ISDN_MAX_CHANNELS) {
+       if (lp->ppp_slot < 0 || lp->ppp_slot >= ISDN_MAX_CHANNELS) {
                printk(KERN_ERR "%s: ppp_slot(%d) now invalid\n",
                        __FUNCTION__, lp->ppp_slot);
                return 0;
@@ -279,7 +278,7 @@ isdn_ppp_open(int min, struct file *file)
        int slot;
        struct ippp_struct *is;
 
-       if (min < 0 || min > ISDN_MAX_CHANNELS)
+       if (min < 0 || min >= ISDN_MAX_CHANNELS)
                return -ENODEV;
 
        slot = isdn_ppp_get_slot();
@@ -668,7 +667,7 @@ isdn_ppp_poll(struct file *file, poll_table * wait)
 
        if (is->debug & 0x2)
                printk(KERN_DEBUG "isdn_ppp_poll: minor: %d\n",
-                               MINOR(file->f_dentry->d_inode->i_rdev));
+                               iminor(file->f_dentry->d_inode));
 
        /* just registers wait_queue hook. This doesn't really wait. */
        poll_wait(file, &is->wq, wait);
@@ -782,7 +781,8 @@ isdn_ppp_read(int min, struct file *file, char __user *buf, int count)
        is->first = b;
 
        spin_unlock_irqrestore(&is->buflock, flags);
-       copy_to_user(buf, save_buf, count);
+       if (copy_to_user(buf, save_buf, count))
+               count = -EFAULT;
        kfree(save_buf);
 
        return count;
@@ -973,8 +973,7 @@ void isdn_ppp_receive(isdn_net_dev * net_dev, isdn_net_local * lp, struct sk_buf
        int slot;
        int proto;
 
-       if (net_dev->local->master)
-               BUG(); // we're called with the master device always
+       BUG_ON(net_dev->local->master); // we're called with the master device always
 
        slot = lp->ppp_slot;
        if (slot < 0 || slot >= ISDN_MAX_CHANNELS) {
@@ -1042,7 +1041,7 @@ isdn_ppp_push_higher(isdn_net_dev * net_dev, isdn_net_local * lp, struct sk_buff
        if (lp->master) { // FIXME?
                mlp = (isdn_net_local *) lp->master->priv;
                slot = mlp->ppp_slot;
-               if (slot < 0 || slot > ISDN_MAX_CHANNELS) {
+               if (slot < 0 || slot >= ISDN_MAX_CHANNELS) {
                        printk(KERN_ERR "isdn_ppp_push_higher: master->ppp_slot(%d)\n",
                                lp->ppp_slot);
                        goto drop_packet;
@@ -1264,7 +1263,7 @@ isdn_ppp_xmit(struct sk_buff *skb, struct net_device *netdev)
        /* we have our lp locked from now on */
 
        slot = lp->ppp_slot;
-       if (slot < 0 || slot > ISDN_MAX_CHANNELS) {
+       if (slot < 0 || slot >= ISDN_MAX_CHANNELS) {
                printk(KERN_ERR "isdn_ppp_xmit: lp->ppp_slot(%d)\n",
                        lp->ppp_slot);
                kfree_skb(skb);
@@ -1603,7 +1602,7 @@ static void isdn_ppp_mp_receive(isdn_net_dev * net_dev, isdn_net_local * lp,
        mp = net_dev->pb;
         stats = &mp->stats;
        slot = lp->ppp_slot;
-       if (slot < 0 || slot > ISDN_MAX_CHANNELS) {
+       if (slot < 0 || slot >= ISDN_MAX_CHANNELS) {
                printk(KERN_ERR "%s: lp->ppp_slot(%d)\n",
                        __FUNCTION__, lp->ppp_slot);
                stats->frame_drops++;
@@ -1640,7 +1639,7 @@ static void isdn_ppp_mp_receive(isdn_net_dev * net_dev, isdn_net_local * lp,
        is->last_link_seqno = minseq = newseq;
        for (lpq = net_dev->queue;;) {
                slot = lpq->ppp_slot;
-               if (slot < 0 || slot > ISDN_MAX_CHANNELS) {
+               if (slot < 0 || slot >= ISDN_MAX_CHANNELS) {
                        printk(KERN_ERR "%s: lpq->ppp_slot(%d)\n",
                                __FUNCTION__, lpq->ppp_slot);
                } else {
@@ -2526,8 +2525,7 @@ static struct sk_buff *isdn_ppp_decompress(struct sk_buff *skb,struct ippp_struc
                printk(KERN_DEBUG "ippp: no decompressor defined!\n");
                return skb;
        }
-       if (!stat) // if we have a compressor, stat has been set as well
-               BUG();
+       BUG_ON(!stat); // if we have a compressor, stat has been set as well
 
        if((master && *proto == PPP_COMP) || (!master && *proto == PPP_COMPFRAG) ) {
                // compressed packets are compressed by their protocol type
@@ -2649,7 +2647,7 @@ static void isdn_ppp_receive_ccp(isdn_net_dev *net_dev, isdn_net_local *lp,
 
        printk(KERN_DEBUG "Received CCP frame from peer slot(%d)\n",
                lp->ppp_slot);
-       if (lp->ppp_slot < 0 || lp->ppp_slot > ISDN_MAX_CHANNELS) {
+       if (lp->ppp_slot < 0 || lp->ppp_slot >= ISDN_MAX_CHANNELS) {
                printk(KERN_ERR "%s: lp->ppp_slot(%d) out of range\n",
                        __FUNCTION__, lp->ppp_slot);
                return;
@@ -2659,7 +2657,7 @@ static void isdn_ppp_receive_ccp(isdn_net_dev *net_dev, isdn_net_local *lp,
 
        if(lp->master) {
                int slot = ((isdn_net_local *) (lp->master->priv))->ppp_slot;
-               if (slot < 0 || slot > ISDN_MAX_CHANNELS) {
+               if (slot < 0 || slot >= ISDN_MAX_CHANNELS) {
                        printk(KERN_ERR "%s: slot(%d) out of range\n",
                                __FUNCTION__, slot);
                        return;
@@ -2846,7 +2844,7 @@ static void isdn_ppp_send_ccp(isdn_net_dev *net_dev, isdn_net_local *lp, struct
 
        if (lp->master) {
                slot = ((isdn_net_local *) (lp->master->priv))->ppp_slot;
-               if (slot < 0 || slot > ISDN_MAX_CHANNELS) {
+               if (slot < 0 || slot >= ISDN_MAX_CHANNELS) {
                        printk(KERN_ERR "%s: slot(%d) out of range\n",
                                __FUNCTION__, slot);
                        return;