1 files changed, 187 insertions, 188 deletions

diff --git a/drivers/isdn/i4l/isdn_bsdcomp.c b/drivers/isdn/i4l/isdn_bsdcomp.c
index aa0b6a6f5ef4..c59e8d2c0675 100644
--- a/drivers/isdn/i4l/isdn_bsdcomp.c
+++ b/drivers/isdn/i4l/isdn_bsdcomp.c
@@ -7,7 +7,7 @@
  */
 
 /*
- * Update: The Berkeley copyright was changed, and the change 
+ * Update: The Berkeley copyright was changed, and the change
  * is retroactive to all "true" BSD software (ie everything
  * from UCB as opposed to other peoples code that just carried
  * the same license). The new copyright doesn't clash with the
@@ -69,7 +69,6 @@
 #include <linux/signal.h>	/* used in new tty drivers */
 #include <linux/bitops.h>
 
-#include <asm/system.h>
 #include <asm/byteorder.h>
 #include <asm/types.h>
 
@@ -121,7 +120,7 @@ struct bsd_db {
 	unsigned char  maxbits;		/* maximum bits/code */
 	unsigned char  debug;		/* non-zero if debug desired */
 	unsigned char  unit;		/* ppp unit number */
-	u16 seqno;          		/* sequence # of next packet */
+	u16 seqno;			/* sequence # of next packet */
 	unsigned int   mru;		/* size of receive (decompress) bufr */
 	unsigned int   maxmaxcode;	/* largest valid code */
 	unsigned int   max_ent;		/* largest code in use */
@@ -157,16 +156,16 @@ struct bsd_db {
 #define MAXCODE(b)	((1 << (b)) - 1)
 #define BADCODEM1	MAXCODE(MAX_BSD_BITS)
 
-#define BSD_HASH(prefix,suffix,hshift) ((((unsigned long)(suffix))<<(hshift)) \
-					 ^ (unsigned long)(prefix))
-#define BSD_KEY(prefix,suffix)		((((unsigned long)(suffix)) << 16) \
+#define BSD_HASH(prefix, suffix, hshift) ((((unsigned long)(suffix)) << (hshift)) \
+					  ^ (unsigned long)(prefix))
+#define BSD_KEY(prefix, suffix)		((((unsigned long)(suffix)) << 16) \
 					 + (unsigned long)(prefix))
 
 #define CHECK_GAP	10000		/* Ratio check interval */
 
 #define RATIO_SCALE_LOG	8
-#define RATIO_SCALE	(1<<RATIO_SCALE_LOG)
-#define RATIO_MAX	(0x7fffffff>>RATIO_SCALE_LOG)
+#define RATIO_SCALE	(1 << RATIO_SCALE_LOG)
+#define RATIO_MAX	(0x7fffffff >> RATIO_SCALE_LOG)
 
 /*
  * clear the dictionary
@@ -175,7 +174,7 @@ struct bsd_db {
 static void bsd_clear(struct bsd_db *db)
 {
 	db->clear_count++;
-	db->max_ent      = FIRST-1;
+	db->max_ent      = FIRST - 1;
 	db->n_bits       = BSD_INIT_BITS;
 	db->bytes_out    = 0;
 	db->in_count     = 0;
@@ -197,56 +196,56 @@ static void bsd_clear(struct bsd_db *db)
  * the absence of CLEAR codes (while packets are incompressible), they
  * must compute the same ratio.
  */
-static int bsd_check (struct bsd_db *db)	/* 1=output CLEAR */
+static int bsd_check(struct bsd_db *db)	/* 1=output CLEAR */
 {
-    unsigned int new_ratio;
-
-    if (db->in_count >= db->checkpoint)
-      {
-	/* age the ratio by limiting the size of the counts */
-	if (db->in_count >= RATIO_MAX || db->bytes_out >= RATIO_MAX)
-	  {
-	    db->in_count  -= (db->in_count  >> 2);
-	    db->bytes_out -= (db->bytes_out >> 2);
-	  }
-	
-	db->checkpoint = db->in_count + CHECK_GAP;
-	
-	if (db->max_ent >= db->maxmaxcode)
-	  {
-	    /* Reset the dictionary only if the ratio is worse,
-	     * or if it looks as if it has been poisoned
-	     * by incompressible data.
-	     *
-	     * This does not overflow, because
-	     *	db->in_count <= RATIO_MAX.
-	     */
-
-	    new_ratio = db->in_count << RATIO_SCALE_LOG;
-	    if (db->bytes_out != 0)
-	      {
-		new_ratio /= db->bytes_out;
-	      }
-	    
-	    if (new_ratio < db->ratio || new_ratio < 1 * RATIO_SCALE)
-	      {
-		bsd_clear (db);
-		return 1;
-	      }
-	    db->ratio = new_ratio;
-	  }
-      }
-    return 0;
+	unsigned int new_ratio;
+
+	if (db->in_count >= db->checkpoint)
+	{
+		/* age the ratio by limiting the size of the counts */
+		if (db->in_count >= RATIO_MAX || db->bytes_out >= RATIO_MAX)
+		{
+			db->in_count  -= (db->in_count  >> 2);
+			db->bytes_out -= (db->bytes_out >> 2);
+		}
+
+		db->checkpoint = db->in_count + CHECK_GAP;
+
+		if (db->max_ent >= db->maxmaxcode)
+		{
+			/* Reset the dictionary only if the ratio is worse,
+			 * or if it looks as if it has been poisoned
+			 * by incompressible data.
+			 *
+			 * This does not overflow, because
+			 *	db->in_count <= RATIO_MAX.
+			 */
+
+			new_ratio = db->in_count << RATIO_SCALE_LOG;
+			if (db->bytes_out != 0)
+			{
+				new_ratio /= db->bytes_out;
+			}
+
+			if (new_ratio < db->ratio || new_ratio < 1 * RATIO_SCALE)
+			{
+				bsd_clear(db);
+				return 1;
+			}
+			db->ratio = new_ratio;
+		}
+	}
+	return 0;
 }
 
 /*
  * Return statistics.
  */
 
-static void bsd_stats (void *state, struct compstat *stats)
+static void bsd_stats(void *state, struct compstat *stats)
 {
 	struct bsd_db *db = (struct bsd_db *) state;
-    
+
 	stats->unc_bytes    = db->uncomp_bytes;
 	stats->unc_packets  = db->uncomp_count;
 	stats->comp_bytes   = db->comp_bytes;
@@ -260,9 +259,9 @@ static void bsd_stats (void *state, struct compstat *stats)
 /*
  * Reset state, as on a CCP ResetReq.
  */
-static void bsd_reset (void *state,unsigned char code, unsigned char id,
-			unsigned char *data, unsigned len,
-			struct isdn_ppp_resetparams *rsparm)
+static void bsd_reset(void *state, unsigned char code, unsigned char id,
+		      unsigned char *data, unsigned len,
+		      struct isdn_ppp_resetparams *rsparm)
 {
 	struct bsd_db *db = (struct bsd_db *) state;
 
@@ -274,7 +273,7 @@ static void bsd_reset (void *state,unsigned char code, unsigned char id,
 /*
  * Release the compression structure
  */
-static void bsd_free (void *state)
+static void bsd_free(void *state)
 {
 	struct bsd_db *db = (struct bsd_db *) state;
 
@@ -302,7 +301,7 @@ static void bsd_free (void *state)
 /*
  * Allocate space for a (de) compressor.
  */
-static void *bsd_alloc (struct isdn_ppp_comp_data *data)
+static void *bsd_alloc(struct isdn_ppp_comp_data *data)
 {
 	int bits;
 	unsigned int hsize, hshift, maxmaxcode;
@@ -310,27 +309,27 @@ static void *bsd_alloc (struct isdn_ppp_comp_data *data)
 	int decomp;
 
 	static unsigned int htab[][2] = {
-		{ 5003 , 4 } , { 5003 , 4 } , { 5003 , 4 } , { 5003 , 4 } , 
-		{ 9001 , 5 } , { 18013 , 6 } , { 35023 , 7 } , { 69001 , 8 } 
+		{ 5003 , 4 } , { 5003 , 4 } , { 5003 , 4 } , { 5003 , 4 } ,
+		{ 9001 , 5 } , { 18013 , 6 } , { 35023 , 7 } , { 69001 , 8 }
 	};
-		
+
 	if (data->optlen != 1 || data->num != CI_BSD_COMPRESS
-		|| BSD_VERSION(data->options[0]) != BSD_CURRENT_VERSION)
+	    || BSD_VERSION(data->options[0]) != BSD_CURRENT_VERSION)
 		return NULL;
 
 	bits = BSD_NBITS(data->options[0]);
 
-	if(bits < 9 || bits > 15)
+	if (bits < 9 || bits > 15)
 		return NULL;
 
-	hsize = htab[bits-9][0];
-	hshift = htab[bits-9][1];
-	
+	hsize = htab[bits - 9][0];
+	hshift = htab[bits - 9][1];
+
 	/*
 	 * Allocate the main control structure for this instance.
 	 */
 	maxmaxcode = MAXCODE(bits);
-	db = kzalloc (sizeof (struct bsd_db),GFP_KERNEL);
+	db = kzalloc(sizeof(struct bsd_db), GFP_KERNEL);
 	if (!db)
 		return NULL;
 
@@ -343,7 +342,7 @@ static void *bsd_alloc (struct isdn_ppp_comp_data *data)
 	 */
 	db->dict = vmalloc(hsize * sizeof(struct bsd_dict));
 	if (!db->dict) {
-		bsd_free (db);
+		bsd_free(db);
 		return NULL;
 	}
 
@@ -356,7 +355,7 @@ static void *bsd_alloc (struct isdn_ppp_comp_data *data)
 	else {
 		db->lens = vmalloc((maxmaxcode + 1) * sizeof(db->lens[0]));
 		if (!db->lens) {
-			bsd_free (db);
+			bsd_free(db);
 			return (NULL);
 		}
 	}
@@ -364,41 +363,41 @@ static void *bsd_alloc (struct isdn_ppp_comp_data *data)
 	/*
 	 * Initialize the data information for the compression code
 	 */
-	db->totlen     = sizeof (struct bsd_db) + (sizeof (struct bsd_dict) * hsize);
-	db->hsize      = hsize;
-	db->hshift     = hshift;
+	db->totlen = sizeof(struct bsd_db) + (sizeof(struct bsd_dict) * hsize);
+	db->hsize = hsize;
+	db->hshift = hshift;
 	db->maxmaxcode = maxmaxcode;
-	db->maxbits    = bits;
+	db->maxbits = bits;
 
-	return (void *) db;
+	return (void *)db;
 }
 
 /*
  * Initialize the database.
  */
-static int bsd_init (void *state, struct isdn_ppp_comp_data *data, int unit, int debug)
+static int bsd_init(void *state, struct isdn_ppp_comp_data *data, int unit, int debug)
 {
 	struct bsd_db *db = state;
 	int indx;
 	int decomp;
 
-	if(!state || !data) {
-		printk(KERN_ERR "isdn_bsd_init: [%d] ERR, state %lx data %lx\n",unit,(long)state,(long)data);
+	if (!state || !data) {
+		printk(KERN_ERR "isdn_bsd_init: [%d] ERR, state %lx data %lx\n", unit, (long)state, (long)data);
 		return 0;
 	}
 
 	decomp = db->xmit ? 0 : 1;
-    
+
 	if (data->optlen != 1 || data->num != CI_BSD_COMPRESS
-		|| (BSD_VERSION(data->options[0]) != BSD_CURRENT_VERSION)
-		|| (BSD_NBITS(data->options[0]) != db->maxbits)
-		|| (decomp && db->lens == NULL)) {
-		printk(KERN_ERR "isdn_bsd: %d %d %d %d %lx\n",data->optlen,data->num,data->options[0],decomp,(unsigned long)db->lens);
+	    || (BSD_VERSION(data->options[0]) != BSD_CURRENT_VERSION)
+	    || (BSD_NBITS(data->options[0]) != db->maxbits)
+	    || (decomp && db->lens == NULL)) {
+		printk(KERN_ERR "isdn_bsd: %d %d %d %d %lx\n", data->optlen, data->num, data->options[0], decomp, (unsigned long)db->lens);
 		return 0;
 	}
 
 	if (decomp)
-		for(indx=LAST;indx>=0;indx--)
+		for (indx = LAST; indx >= 0; indx--)
 			db->lens[indx] = 1;
 
 	indx = db->hsize;
@@ -411,9 +410,9 @@ static int bsd_init (void *state, struct isdn_ppp_comp_data *data, int unit, int
 	db->mru  = 0;
 
 	db->debug = 1;
-    
-	bsd_reset(db,0,0,NULL,0,NULL);
-    
+
+	bsd_reset(db, 0, 0, NULL, 0, NULL);
+
 	return 1;
 }
 
@@ -421,37 +420,37 @@ static int bsd_init (void *state, struct isdn_ppp_comp_data *data, int unit, int
  * Obtain pointers to the various structures in the compression tables
  */
 
-#define dict_ptrx(p,idx) &(p->dict[idx])
-#define lens_ptrx(p,idx) &(p->lens[idx])
+#define dict_ptrx(p, idx) &(p->dict[idx])
+#define lens_ptrx(p, idx) &(p->lens[idx])
 
 #ifdef DEBUG
 static unsigned short *lens_ptr(struct bsd_db *db, int idx)
 {
 	if ((unsigned int) idx > (unsigned int) db->maxmaxcode) {
-		printk (KERN_DEBUG "<9>ppp: lens_ptr(%d) > max\n", idx);
+		printk(KERN_DEBUG "<9>ppp: lens_ptr(%d) > max\n", idx);
 		idx = 0;
 	}
-	return lens_ptrx (db, idx);
+	return lens_ptrx(db, idx);
 }
 
 static struct bsd_dict *dict_ptr(struct bsd_db *db, int idx)
 {
 	if ((unsigned int) idx >= (unsigned int) db->hsize) {
-		printk (KERN_DEBUG "<9>ppp: dict_ptr(%d) > max\n", idx);
+		printk(KERN_DEBUG "<9>ppp: dict_ptr(%d) > max\n", idx);
 		idx = 0;
 	}
-	return dict_ptrx (db, idx);
+	return dict_ptrx(db, idx);
 }
 
 #else
-#define lens_ptr(db,idx) lens_ptrx(db,idx)
-#define dict_ptr(db,idx) dict_ptrx(db,idx)
+#define lens_ptr(db, idx) lens_ptrx(db, idx)
+#define dict_ptr(db, idx) dict_ptrx(db, idx)
 #endif
 
 /*
  * compress a packet
  */
-static int bsd_compress (void *state, struct sk_buff *skb_in, struct sk_buff *skb_out,int proto)
+static int bsd_compress(void *state, struct sk_buff *skb_in, struct sk_buff *skb_out, int proto)
 {
 	struct bsd_db *db;
 	int hshift;
@@ -463,31 +462,31 @@ static int bsd_compress (void *state, struct sk_buff *skb_in, struct sk_buff *sk
 	unsigned long fcode;
 	struct bsd_dict *dictp;
 	unsigned char c;
-	int hval,disp,ilen,mxcode;
+	int hval, disp, ilen, mxcode;
 	unsigned char *rptr = skb_in->data;
 	int isize = skb_in->len;
 
-#define OUTPUT(ent)			\
-  {					\
-    bitno -= n_bits;			\
-    accm |= ((ent) << bitno);		\
-    do	{				\
-        if(skb_out && skb_tailroom(skb_out) > 0) 	\
-      		*(skb_put(skb_out,1)) = (unsigned char) (accm>>24); \
-	accm <<= 8;			\
-	bitno += 8;			\
-    } while (bitno <= 24);		\
-  }
+#define OUTPUT(ent)							\
+	{								\
+		bitno -= n_bits;					\
+		accm |= ((ent) << bitno);				\
+		do	{						\
+			if (skb_out && skb_tailroom(skb_out) > 0)	\
+				*(skb_put(skb_out, 1)) = (unsigned char)(accm >> 24); \
+			accm <<= 8;					\
+			bitno += 8;					\
+		} while (bitno <= 24);					\
+	}
 
 	/*
 	 * If the protocol is not in the range we're interested in,
 	 * just return without compressing the packet.  If it is,
 	 * the protocol becomes the first byte to compress.
 	 */
-	printk(KERN_DEBUG "bsd_compress called with %x\n",proto);
-	
+	printk(KERN_DEBUG "bsd_compress called with %x\n", proto);
+
 	ent = proto;
-	if (proto < 0x21 || proto > 0xf9 || !(proto & 0x1) )
+	if (proto < 0x21 || proto > 0xf9 || !(proto & 0x1))
 		return 0;
 
 	db      = (struct bsd_db *) state;
@@ -496,25 +495,25 @@ static int bsd_compress (void *state, struct sk_buff *skb_in, struct sk_buff *sk
 	n_bits  = db->n_bits;
 	bitno   = 32;
 	accm    = 0;
-	mxcode  = MAXCODE (n_bits);
-	
+	mxcode  = MAXCODE(n_bits);
+
 	/* This is the PPP header information */
-	if(skb_out && skb_tailroom(skb_out) >= 2) {
-		char *v = skb_put(skb_out,2);
+	if (skb_out && skb_tailroom(skb_out) >= 2) {
+		char *v = skb_put(skb_out, 2);
 		/* we only push our own data on the header,
-		  AC,PC and protos is pushed by caller  */
+		   AC,PC and protos is pushed by caller  */
 		v[0] = db->seqno >> 8;
 		v[1] = db->seqno;
 	}
 
-	ilen   = ++isize; /* This is off by one, but that is what is in draft! */
+	ilen = ++isize; /* This is off by one, but that is what is in draft! */
 
 	while (--ilen > 0) {
-		c     = *rptr++;
-		fcode = BSD_KEY  (ent, c);
-		hval  = BSD_HASH (ent, c, hshift);
-		dictp = dict_ptr (db, hval);
-	
+		c = *rptr++;
+		fcode = BSD_KEY(ent, c);
+		hval = BSD_HASH(ent, c, hshift);
+		dictp = dict_ptr(db, hval);
+
 		/* Validate and then check the entry. */
 		if (dictp->codem1 >= max_ent)
 			goto nomatch;
@@ -523,7 +522,7 @@ static int bsd_compress (void *state, struct sk_buff *skb_in, struct sk_buff *sk
 			ent = dictp->codem1 + 1;
 			continue;	/* found (prefix,suffix) */
 		}
-	
+
 		/* continue probing until a match or invalid entry */
 		disp = (hval == 0) ? 1 : hval;
 
@@ -531,17 +530,17 @@ static int bsd_compress (void *state, struct sk_buff *skb_in, struct sk_buff *sk
 			hval += disp;
 			if (hval >= db->hsize)
 				hval -= db->hsize;
-			dictp = dict_ptr (db, hval);
+			dictp = dict_ptr(db, hval);
 			if (dictp->codem1 >= max_ent)
 				goto nomatch;
 		} while (dictp->fcode != fcode);
 
 		ent = dictp->codem1 + 1;	/* finally found (prefix,suffix) */
 		continue;
-	
-nomatch:
+
+	nomatch:
 		OUTPUT(ent);		/* output the prefix */
-	
+
 		/* code -> hashtable */
 		if (max_ent < db->maxmaxcode) {
 			struct bsd_dict *dictp2;
@@ -551,16 +550,16 @@ nomatch:
 			/* expand code size if needed */
 			if (max_ent >= mxcode) {
 				db->n_bits = ++n_bits;
-				mxcode = MAXCODE (n_bits);
+				mxcode = MAXCODE(n_bits);
 			}
-	    
-			/* 
+
+			/*
 			 * Invalidate old hash table entry using
 			 * this code, and then take it over.
 			 */
-			dictp2 = dict_ptr (db, max_ent + 1);
+			dictp2 = dict_ptr(db, max_ent + 1);
 			indx   = dictp2->cptr;
-			dictp3 = dict_ptr (db, indx);
+			dictp3 = dict_ptr(db, indx);
 
 			if (dictp3->codem1 == max_ent)
 				dictp3->codem1 = BADCODEM1;
@@ -571,17 +570,17 @@ nomatch:
 			db->max_ent    = ++max_ent;
 
 			if (db->lens) {
-				unsigned short *len1 = lens_ptr (db, max_ent);
-				unsigned short *len2 = lens_ptr (db, ent);
+				unsigned short *len1 = lens_ptr(db, max_ent);
+				unsigned short *len2 = lens_ptr(db, ent);
 				*len1 = *len2 + 1;
 			}
 		}
 		ent = c;
 	}
-    
+
 	OUTPUT(ent);		/* output the last code */
 
-	if(skb_out)
+	if (skb_out)
 		db->bytes_out    += skb_out->len; /* Do not count bytes from here */
 	db->uncomp_bytes += isize;
 	db->in_count     += isize;
@@ -596,15 +595,15 @@ nomatch:
 	 */
 
 	if (bsd_check(db))
-		OUTPUT (CLEAR);
+		OUTPUT(CLEAR);
 
 	/*
 	 * Pad dribble bits of last code with ones.
 	 * Do not emit a completely useless byte of ones.
 	 */
-	if (bitno < 32 && skb_out && skb_tailroom(skb_out) > 0) 
-		*(skb_put(skb_out,1)) = (unsigned char) ((accm | (0xff << (bitno-8))) >> 24);
-    
+	if (bitno < 32 && skb_out && skb_tailroom(skb_out) > 0)
+		*(skb_put(skb_out, 1)) = (unsigned char)((accm | (0xff << (bitno - 8))) >> 24);
+
 	/*
 	 * Increase code size if we would have without the packet
 	 * boundary because the decompressor will do so.
@@ -613,7 +612,7 @@ nomatch:
 		db->n_bits++;
 
 	/* If output length is too large then this is an incompressible frame. */
-	if (!skb_out || (skb_out && skb_out->len >= skb_in->len) ) {
+	if (!skb_out || (skb_out && skb_out->len >= skb_in->len)) {
 		++db->incomp_count;
 		db->incomp_bytes += isize;
 		return 0;
@@ -631,16 +630,16 @@ nomatch:
  * Update the "BSD Compress" dictionary on the receiver for
  * incompressible data by pretending to compress the incoming data.
  */
-static void bsd_incomp (void *state, struct sk_buff *skb_in,int proto)
+static void bsd_incomp(void *state, struct sk_buff *skb_in, int proto)
 {
-	bsd_compress (state, skb_in, NULL, proto);
+	bsd_compress(state, skb_in, NULL, proto);
 }
 
 /*
  * Decompress "BSD Compress".
  */
-static int bsd_decompress (void *state, struct sk_buff *skb_in, struct sk_buff *skb_out,
-			   struct isdn_ppp_resetparams *rsparm)
+static int bsd_decompress(void *state, struct sk_buff *skb_in, struct sk_buff *skb_out,
+			  struct isdn_ppp_resetparams *rsparm)
 {
 	struct bsd_db *db;
 	unsigned int max_ent;
@@ -653,7 +652,7 @@ static int bsd_decompress (void *state, struct sk_buff *skb_in, struct sk_buff *
 	unsigned int incode;
 	unsigned int oldcode;
 	unsigned int finchar;
-	unsigned char *p,*ibuf;
+	unsigned char *p, *ibuf;
 	int ilen;
 	int codelen;
 	int extra;
@@ -667,20 +666,20 @@ static int bsd_decompress (void *state, struct sk_buff *skb_in, struct sk_buff *
 
 	printk(KERN_DEBUG "bsd_decompress called\n");
 
-	if(!skb_in || !skb_out) {
+	if (!skb_in || !skb_out) {
 		printk(KERN_ERR "bsd_decompress called with NULL parameter\n");
 		return DECOMP_ERROR;
 	}
-    
+
 	/*
 	 * Get the sequence number.
 	 */
-	if( (p = skb_pull(skb_in,2)) == NULL) {
+	if ((p = skb_pull(skb_in, 2)) == NULL) {
 		return DECOMP_ERROR;
 	}
-	p-=2;
-	seq   = (p[0] << 8) + p[1];
-	ilen  = skb_in->len;
+	p -= 2;
+	seq = (p[0] << 8) + p[1];
+	ilen = skb_in->len;
 	ibuf = skb_in->data;
 
 	/*
@@ -690,7 +689,7 @@ static int bsd_decompress (void *state, struct sk_buff *skb_in, struct sk_buff *
 	if (seq != db->seqno) {
 		if (db->debug) {
 			printk(KERN_DEBUG "bsd_decomp%d: bad sequence # %d, expected %d\n",
-				db->unit, seq, db->seqno - 1);
+			       db->unit, seq, db->seqno - 1);
 		}
 		return DECOMP_ERROR;
 	}
@@ -698,11 +697,11 @@ static int bsd_decompress (void *state, struct sk_buff *skb_in, struct sk_buff *
 	++db->seqno;
 	db->bytes_out += ilen;
 
-	if(skb_tailroom(skb_out) > 0)
-		*(skb_put(skb_out,1)) = 0;
+	if (skb_tailroom(skb_out) > 0)
+		*(skb_put(skb_out, 1)) = 0;
 	else
 		return DECOMP_ERR_NOMEM;
-    
+
 	oldcode = CLEAR;
 
 	/*
@@ -734,7 +733,7 @@ static int bsd_decompress (void *state, struct sk_buff *skb_in, struct sk_buff *
 		/*
 		 * The dictionary must only be cleared at the end of a packet.
 		 */
-	
+
 		if (incode == CLEAR) {
 			if (ilen > 0) {
 				if (db->debug)
@@ -746,16 +745,16 @@ static int bsd_decompress (void *state, struct sk_buff *skb_in, struct sk_buff *
 		}
 
 		if ((incode > max_ent + 2) || (incode > db->maxmaxcode)
-			|| (incode > max_ent && oldcode == CLEAR)) {
+		    || (incode > max_ent && oldcode == CLEAR)) {
 			if (db->debug) {
 				printk(KERN_DEBUG "bsd_decomp%d: bad code 0x%x oldcode=0x%x ",
-					db->unit, incode, oldcode);
+				       db->unit, incode, oldcode);
 				printk(KERN_DEBUG "max_ent=0x%x skb->Len=%d seqno=%d\n",
-					max_ent, skb_out->len, db->seqno);
+				       max_ent, skb_out->len, db->seqno);
 			}
 			return DECOMP_FATALERROR;	/* probably a bug */
 		}
-	
+
 		/* Special case for KwKwK string. */
 		if (incode > max_ent) {
 			finchar = oldcode;
@@ -765,13 +764,13 @@ static int bsd_decompress (void *state, struct sk_buff *skb_in, struct sk_buff *
 			extra   = 0;
 		}
 
-		codelen = *(lens_ptr (db, finchar));
-		if( skb_tailroom(skb_out) < codelen + extra) {
+		codelen = *(lens_ptr(db, finchar));
+		if (skb_tailroom(skb_out) < codelen + extra) {
 			if (db->debug) {
 				printk(KERN_DEBUG "bsd_decomp%d: ran out of mru\n", db->unit);
 #ifdef DEBUG
 				printk(KERN_DEBUG "  len=%d, finchar=0x%x, codelen=%d,skblen=%d\n",
-					ilen, finchar, codelen, skb_out->len);
+				       ilen, finchar, codelen, skb_out->len);
 #endif
 			}
 			return DECOMP_FATALERROR;
@@ -781,21 +780,21 @@ static int bsd_decompress (void *state, struct sk_buff *skb_in, struct sk_buff *
 		 * Decode this code and install it in the decompressed buffer.
 		 */
 
-		p     = skb_put(skb_out,codelen);
+		p = skb_put(skb_out, codelen);
 		p += codelen;
 		while (finchar > LAST) {
-			struct bsd_dict *dictp2 = dict_ptr (db, finchar);
-	    
-			dictp = dict_ptr (db, dictp2->cptr);
+			struct bsd_dict *dictp2 = dict_ptr(db, finchar);
+
+			dictp = dict_ptr(db, dictp2->cptr);
 
 #ifdef DEBUG
-			if (--codelen <= 0 || dictp->codem1 != finchar-1) {
+			if (--codelen <= 0 || dictp->codem1 != finchar - 1) {
 				if (codelen <= 0) {
 					printk(KERN_ERR "bsd_decomp%d: fell off end of chain ", db->unit);
 					printk(KERN_ERR "0x%x at 0x%x by 0x%x, max_ent=0x%x\n", incode, finchar, dictp2->cptr, max_ent);
 				} else {
-					if (dictp->codem1 != finchar-1) {
-						printk(KERN_ERR "bsd_decomp%d: bad code chain 0x%x finchar=0x%x ",db->unit, incode, finchar);
+					if (dictp->codem1 != finchar - 1) {
+						printk(KERN_ERR "bsd_decomp%d: bad code chain 0x%x finchar=0x%x ", db->unit, incode, finchar);
 						printk(KERN_ERR "oldcode=0x%x cptr=0x%x codem1=0x%x\n", oldcode, dictp2->cptr, dictp->codem1);
 					}
 				}
@@ -810,15 +809,15 @@ static int bsd_decompress (void *state, struct sk_buff *skb_in, struct sk_buff *
 			}
 		}
 		*--p = finchar;
-	
+
 #ifdef DEBUG
 		if (--codelen != 0)
 			printk(KERN_ERR "bsd_decomp%d: short by %d after code 0x%x, max_ent=0x%x\n", db->unit, codelen, incode, max_ent);
 #endif
-	
+
 		if (extra)		/* the KwKwK case again */
-			*(skb_put(skb_out,1)) = finchar;
-	
+			*(skb_put(skb_out, 1)) = finchar;
+
 		/*
 		 * If not first code in a packet, and
 		 * if not out of code space, then allocate a new code.
@@ -828,14 +827,14 @@ static int bsd_decompress (void *state, struct sk_buff *skb_in, struct sk_buff *
 		 */
 		if (oldcode != CLEAR && max_ent < db->maxmaxcode) {
 			struct bsd_dict *dictp2, *dictp3;
-			u16  *lens1,  *lens2;
+			u16 *lens1, *lens2;
 			unsigned long fcode;
 			int hval, disp, indx;
-	    
-			fcode = BSD_KEY(oldcode,finchar);
-			hval  = BSD_HASH(oldcode,finchar,db->hshift);
-			dictp = dict_ptr (db, hval);
-	    
+
+			fcode = BSD_KEY(oldcode, finchar);
+			hval  = BSD_HASH(oldcode, finchar, db->hshift);
+			dictp = dict_ptr(db, hval);
+
 			/* look for a free hash table entry */
 			if (dictp->codem1 < max_ent) {
 				disp = (hval == 0) ? 1 : hval;
@@ -843,18 +842,18 @@ static int bsd_decompress (void *state, struct sk_buff *skb_in, struct sk_buff *
 					hval += disp;
 					if (hval >= db->hsize)
 						hval -= db->hsize;
-					dictp = dict_ptr (db, hval);
+					dictp = dict_ptr(db, hval);
 				} while (dictp->codem1 < max_ent);
 			}
-	    
+
 			/*
 			 * Invalidate previous hash table entry
 			 * assigned this code, and then take it over
 			 */
 
-			dictp2 = dict_ptr (db, max_ent + 1);
+			dictp2 = dict_ptr(db, max_ent + 1);
 			indx   = dictp2->cptr;
-			dictp3 = dict_ptr (db, indx);
+			dictp3 = dict_ptr(db, indx);
 
 			if (dictp3->codem1 == max_ent)
 				dictp3->codem1 = BADCODEM1;
@@ -865,10 +864,10 @@ static int bsd_decompress (void *state, struct sk_buff *skb_in, struct sk_buff *
 			db->max_ent    = ++max_ent;
 
 			/* Update the length of this string. */
-			lens1  = lens_ptr (db, max_ent);
-			lens2  = lens_ptr (db, oldcode);
+			lens1  = lens_ptr(db, max_ent);
+			lens2  = lens_ptr(db, oldcode);
 			*lens1 = *lens2 + 1;
-	    
+
 			/* Expand code size if needed. */
 			if (max_ent >= MAXCODE(n_bits) && max_ent < db->maxmaxcode) {
 				db->n_bits = ++n_bits;
@@ -886,7 +885,7 @@ static int bsd_decompress (void *state, struct sk_buff *skb_in, struct sk_buff *
 	if (bsd_check(db)) {
 		if (db->debug)
 			printk(KERN_DEBUG "bsd_decomp%d: peer should have cleared dictionary on %d\n",
-				db->unit, db->seqno - 1);
+			       db->unit, db->seqno - 1);
 	}
 	return skb_out->len;
 }
@@ -914,15 +913,15 @@ static struct isdn_ppp_compressor ippp_bsd_compress = {
 
 static int __init isdn_bsdcomp_init(void)
 {
-	int answer = isdn_ppp_register_compressor (&ippp_bsd_compress);
+	int answer = isdn_ppp_register_compressor(&ippp_bsd_compress);
 	if (answer == 0)
-		printk (KERN_INFO "PPP BSD Compression module registered\n");
+		printk(KERN_INFO "PPP BSD Compression module registered\n");
 	return answer;
 }
 
 static void __exit isdn_bsdcomp_exit(void)
 {
-	isdn_ppp_unregister_compressor (&ippp_bsd_compress);
+	isdn_ppp_unregister_compressor(&ippp_bsd_compress);
 }
 
 module_init(isdn_bsdcomp_init);