parisc: firmware: Simplify calling non-PA20 functions

Instead of usig #ifdefs, simply return PDC_BAD_PROC for functions
which aren't available on 64-bit CPUs.
Signed-off-by: Helge Deller <deller@gmx.de>

arch/parisc/include/asm/pdc.h

@@ -44,13 +44,11 @@ int pdc_model_capabilities(unsigned long *capabilities);
 int pdc_model_platform_info(char *orig_prod_num, char *current_prod_num, char *serial_no);
 int pdc_cache_info(struct pdc_cache_info *cache);
 int pdc_spaceid_bits(unsigned long *space_bits);
-#ifndef CONFIG_PA20
 int pdc_btlb_info(struct pdc_btlb_info *btlb);
 int pdc_btlb_insert(unsigned long long vpage, unsigned long physpage, unsigned long len,
                     unsigned long entry_info, unsigned long slot);
 int pdc_btlb_purge_all(void);
 int pdc_mem_map_hpa(struct pdc_memory_map *r_addr, struct pdc_module_path *mod_path);
-#endif /* !CONFIG_PA20 */
 int pdc_pim_toc11(struct pdc_toc_pim_11 *ret);
 int pdc_pim_toc20(struct pdc_toc_pim_20 *ret);
 int pdc_lan_station_id(char *lan_addr, unsigned long net_hpa);

arch/parisc/kernel/firmware.c

@@ -687,7 +687,6 @@ int pdc_spaceid_bits(unsigned long *space_bits)
 	return retval;
 }
 
-#ifndef CONFIG_PA20
 /**
  * pdc_btlb_info - Return block TLB information.
  * @btlb: The return buffer.
@@ -699,6 +698,9 @@ int pdc_btlb_info(struct pdc_btlb_info *btlb)
 	int retval;
 	unsigned long flags;
 
+	if (IS_ENABLED(CONFIG_PA20))
+		return PDC_BAD_PROC;
+
 	spin_lock_irqsave(&pdc_lock, flags);
 	retval = mem_pdc_call(PDC_BLOCK_TLB, PDC_BTLB_INFO, __pa(pdc_result), 0);
 	memcpy(btlb, pdc_result, sizeof(*btlb));
@@ -716,6 +718,9 @@ int pdc_btlb_insert(unsigned long long vpage, unsigned long physpage, unsigned l
 	int retval;
 	unsigned long flags;
 
+	if (IS_ENABLED(CONFIG_PA20))
+		return PDC_BAD_PROC;
+
 	spin_lock_irqsave(&pdc_lock, flags);
 	retval = mem_pdc_call(PDC_BLOCK_TLB, PDC_BTLB_INSERT, (unsigned long) (vpage >> 32),
 			      (unsigned long) vpage, physpage, len, entry_info, slot);
@@ -728,6 +733,9 @@ int pdc_btlb_purge_all(void)
 	int retval;
 	unsigned long flags;
 
+	if (IS_ENABLED(CONFIG_PA20))
+		return PDC_BAD_PROC;
+
 	spin_lock_irqsave(&pdc_lock, flags);
 	retval = mem_pdc_call(PDC_BLOCK_TLB, PDC_BTLB_PURGE_ALL);
 	spin_unlock_irqrestore(&pdc_lock, flags);
@@ -752,6 +760,9 @@ int pdc_mem_map_hpa(struct pdc_memory_map *address,
         int retval;
 	unsigned long flags;
 
+	if (IS_ENABLED(CONFIG_PA20))
+		return PDC_BAD_PROC;
+
         spin_lock_irqsave(&pdc_lock, flags);
         memcpy(pdc_result2, mod_path, sizeof(*mod_path));
         retval = mem_pdc_call(PDC_MEM_MAP, PDC_MEM_MAP_HPA, __pa(pdc_result),
@@ -761,7 +772,6 @@ int pdc_mem_map_hpa(struct pdc_memory_map *address,
 
         return retval;
 }
-#endif	/* !CONFIG_PA20 */
 
 /**
  * pdc_lan_station_id - Get the LAN address.