[ATM]: atm_pcr_goal() doesn't modify its argument's contents -- mark it as const

Signed-off-by: Mitchell Blank Jr <[e-mail]>
Signed-off-by: Chas Williams <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

include/linux/atmdev.h

···
 int atm_charge(struct atm_vcc *vcc,int truesize);
 struct sk_buff *atm_alloc_charge(struct atm_vcc *vcc,int pdu_size,
     gfp_t gfp_flags);
-int atm_pcr_goal(struct atm_trafprm *tp);
+int atm_pcr_goal(const struct atm_trafprm *tp);
 
 void vcc_release_async(struct atm_vcc *vcc, int reply);
 

net/atm/atm_misc.c

···
  */
 
 
-int atm_pcr_goal(struct atm_trafprm *tp)
+int atm_pcr_goal(const struct atm_trafprm *tp)
 {
-	if (tp->pcr && tp->pcr != ATM_MAX_PCR) return -tp->pcr;
-	if (tp->min_pcr && !tp->pcr) return tp->min_pcr;
-	if (tp->max_pcr != ATM_MAX_PCR) return -tp->max_pcr;
+	if (tp->pcr && tp->pcr != ATM_MAX_PCR)
+		return -tp->pcr;
+	if (tp->min_pcr && !tp->pcr)
+		return tp->min_pcr;
+	if (tp->max_pcr != ATM_MAX_PCR)
+		return -tp->max_pcr;
 	return 0;
 }