net: fddi: skfp: Remove unused function

Clang warns when a variable is assigned to itself.

drivers/net/fddi/skfp/pcmplc.c:1257:6: warning: explicitly assigning
value of variable of type 'int' to itself [-Wself-assign]
        phy = phy ; on_off = on_off ;
        ~~~ ^ ~~~
drivers/net/fddi/skfp/pcmplc.c:1257:21: warning: explicitly assigning
value of variable of type 'int' to itself [-Wself-assign]
        phy = phy ; on_off = on_off ;
                    ~~~~~~ ^ ~~~~~~
2 warnings generated.

Turns out this entire function doesn't actually do anything since
SK_UNUSED is just casting the pointer to void. Remove it to silence
this Clang warning.

Link: https://github.com/ClangBuiltLinux/linux/issues/128Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/fddi/skfp/ecm.c

@@ -30,7 +30,6 @@
  *
  * 	The following external HW dependent functions are referenced :
  * 		sm_pm_bypass_req()
- * 		sm_pm_ls_latch()
  * 		sm_pm_get_ls()
  * 
  * 	The following HW dependent events are required :
@@ -356,8 +355,6 @@ static void ecm_fsm(struct s_smc *smc, int cmd)
 		 */
 		start_ecm_timer(smc,smc->s.ecm_check_poll,0) ;
 		smc->e.ecm_line_state = TRUE ;	/* flag to pcm: report Q/HLS */
-		(void) sm_pm_ls_latch(smc,PA,1) ; /* enable line state latch */
-		(void) sm_pm_ls_latch(smc,PB,1) ; /* enable line state latch */
 		ACTIONS_DONE() ;
 		break ;
 	case EC6_CHECK :

drivers/net/fddi/skfp/h/cmtdef.h

@@ -513,7 +513,6 @@ void pcm_status_state(struct s_smc *smc, int np, int *type, int *state,
 void plc_config_mux(struct s_smc *smc, int mux);
 void sm_lem_evaluate(struct s_smc *smc);
 void mac_update_counter(struct s_smc *smc);
-void sm_pm_ls_latch(struct s_smc *smc, int phy, int on_off);
 void sm_ma_control(struct s_smc *smc, int mode);
 void sm_mac_check_beacon_claim(struct s_smc *smc);
 void config_mux(struct s_smc *smc, int mux);

drivers/net/fddi/skfp/pcmplc.c

@@ -30,7 +30,6 @@
  * 	The following external HW dependent functions are referenced :
  * 		sm_pm_control()
  *		sm_ph_linestate()
- *		sm_pm_ls_latch()
  *
  * 	The following HW dependent events are required :
  *		PC_QLS
@@ -1248,16 +1247,6 @@ static void sm_ph_lem_stop(struct s_smc *smc, int np)
 	CLEAR(PLC(np,PL_INTR_MASK),PL_LE_CTR) ;
 }
 
-/* ARGSUSED */
-void sm_pm_ls_latch(struct s_smc *smc, int phy, int on_off)
-/* int on_off;	en- or disable ident. ls */
-{
-	SK_UNUSED(smc) ;
-
-	phy = phy ; on_off = on_off ;
-}
-
-
 /*
  * PCM pseudo code
  * receive actions are called AFTER the bit n is received,