X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fisdn%2Fi4l%2Fisdn_ppp.c;h=119412d6bd15d05d253504bada35acbde7b3fc54;hb=cd6b3956e9923915da789df1c665976b5583cfb0;hp=1a19a0f894288907c30ea2fbb91790db3d67a584;hpb=a9931a6e37c09f6b76a9fa0cbd777c335548692b;p=linux-2.6

diff --git a/drivers/isdn/i4l/isdn_ppp.c b/drivers/isdn/i4l/isdn_ppp.c
index 1a19a0f894..119412d6bd 100644
--- 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;