Merge branch 'irq-fixes' of git://git.parisc-linux.org/git/linux-2.6

* 'irq-fixes' of git://git.parisc-linux.org/git/linux-2.6:
  [PARISC] More pt_regs removal
  [PARISC] pdc_init no longer exists
  [PARISC] Make firmware calls irqsafe-ish...
  [PA-RISC] Fix boot breakage
  [PARISC] Use set_irq_regs

5 files changed, 177 insertions, 129 deletions

diff --git a/arch/parisc/kernel/drivers.c b/arch/parisc/kernel/drivers.c
index 2b257e4f17d..d6c486e9501 100644
--- a/arch/parisc/kernel/drivers.c
+++ b/arch/parisc/kernel/drivers.c
@@ -424,7 +424,7 @@ struct parisc_device * create_tree_node(char id, struct device *parent)
 	/* make the generic dma mask a pointer to the parisc one */
 	dev->dev.dma_mask = &dev->dma_mask;
 	dev->dev.coherent_dma_mask = dev->dma_mask;
-	if (!device_register(&dev->dev)) {
+	if (device_register(&dev->dev)) {
 		kfree(dev);
 		return NULL;
 	}
@@ -853,9 +853,9 @@ static void print_parisc_device(struct parisc_device *dev)
  */
 void init_parisc_bus(void)
 {
-	if (!bus_register(&parisc_bus_type))
+	if (bus_register(&parisc_bus_type))
 		panic("Could not register PA-RISC bus type\n");
-	if (!device_register(&root))
+	if (device_register(&root))
 		panic("Could not register PA-RISC root device\n");
 	get_device(&root);
 }
diff --git a/arch/parisc/kernel/firmware.c b/arch/parisc/kernel/firmware.c
index c2531ae032c..9158b707c0d 100644
--- a/arch/parisc/kernel/firmware.c
+++ b/arch/parisc/kernel/firmware.c
@@ -160,13 +160,14 @@ void __init set_firmware_width(void)
 {
 #ifdef __LP64__
 	int retval;
+	unsigned long flags;
 
-        spin_lock_irq(&pdc_lock);
+        spin_lock_irqsave(&pdc_lock, flags);
 	retval = mem_pdc_call(PDC_MODEL, PDC_MODEL_CAPABILITIES, __pa(pdc_result), 0);
 	convert_to_wide(pdc_result);
 	if(pdc_result[0] != NARROW_FIRMWARE)
 		parisc_narrow_firmware = 0;
-        spin_unlock_irq(&pdc_lock);
+        spin_unlock_irqrestore(&pdc_lock, flags);
 #endif
 }
 
@@ -196,10 +197,11 @@ void pdc_emergency_unlock(void)
 int pdc_add_valid(unsigned long address)
 {
         int retval;
+	unsigned long flags;
 
-        spin_lock_irq(&pdc_lock);
+        spin_lock_irqsave(&pdc_lock, flags);
         retval = mem_pdc_call(PDC_ADD_VALID, PDC_ADD_VALID_VERIFY, address);
-        spin_unlock_irq(&pdc_lock);
+        spin_unlock_irqrestore(&pdc_lock, flags);
 
         return retval;
 }
@@ -216,15 +218,16 @@ EXPORT_SYMBOL(pdc_add_valid);
 int __init pdc_chassis_info(struct pdc_chassis_info *chassis_info, void *led_info, unsigned long len)
 {
         int retval;
+	unsigned long flags;
 
-        spin_lock_irq(&pdc_lock);
+        spin_lock_irqsave(&pdc_lock, flags);
         memcpy(&pdc_result, chassis_info, sizeof(*chassis_info));
         memcpy(&pdc_result2, led_info, len);
         retval = mem_pdc_call(PDC_CHASSIS, PDC_RETURN_CHASSIS_INFO,
                               __pa(pdc_result), __pa(pdc_result2), len);
         memcpy(chassis_info, pdc_result, sizeof(*chassis_info));
         memcpy(led_info, pdc_result2, len);
-        spin_unlock_irq(&pdc_lock);
+        spin_unlock_irqrestore(&pdc_lock, flags);
 
         return retval;
 }
@@ -239,13 +242,14 @@ int __init pdc_chassis_info(struct pdc_chassis_info *chassis_info, void *led_inf
 int pdc_pat_chassis_send_log(unsigned long state, unsigned long data)
 {
 	int retval = 0;
+	unsigned long flags;
         
 	if (!is_pdc_pat())
 		return -1;
 
-	spin_lock_irq(&pdc_lock);
+	spin_lock_irqsave(&pdc_lock, flags);
 	retval = mem_pdc_call(PDC_PAT_CHASSIS_LOG, PDC_PAT_CHASSIS_WRITE_LOG, __pa(&state), __pa(&data));
-	spin_unlock_irq(&pdc_lock);
+	spin_unlock_irqrestore(&pdc_lock, flags);
 
 	return retval;
 }
@@ -258,10 +262,11 @@ int pdc_pat_chassis_send_log(unsigned long state, unsigned long data)
 int pdc_chassis_disp(unsigned long disp)
 {
 	int retval = 0;
+	unsigned long flags;
 
-	spin_lock_irq(&pdc_lock);
+	spin_lock_irqsave(&pdc_lock, flags);
 	retval = mem_pdc_call(PDC_CHASSIS, PDC_CHASSIS_DISP, disp);
-	spin_unlock_irq(&pdc_lock);
+	spin_unlock_irqrestore(&pdc_lock, flags);
 
 	return retval;
 }
@@ -273,11 +278,12 @@ int pdc_chassis_disp(unsigned long disp)
 int pdc_chassis_warn(unsigned long *warn)
 {
 	int retval = 0;
+	unsigned long flags;
 
-	spin_lock_irq(&pdc_lock);
+	spin_lock_irqsave(&pdc_lock, flags);
 	retval = mem_pdc_call(PDC_CHASSIS, PDC_CHASSIS_WARN, __pa(pdc_result));
 	*warn = pdc_result[0];
-	spin_unlock_irq(&pdc_lock);
+	spin_unlock_irqrestore(&pdc_lock, flags);
 
 	return retval;
 }
@@ -292,15 +298,16 @@ int pdc_chassis_warn(unsigned long *warn)
 int __init pdc_coproc_cfg(struct pdc_coproc_cfg *pdc_coproc_info)
 {
         int retval;
+	unsigned long flags;
 
-        spin_lock_irq(&pdc_lock);
+        spin_lock_irqsave(&pdc_lock, flags);
         retval = mem_pdc_call(PDC_COPROC, PDC_COPROC_CFG, __pa(pdc_result));
         convert_to_wide(pdc_result);
         pdc_coproc_info->ccr_functional = pdc_result[0];
         pdc_coproc_info->ccr_present = pdc_result[1];
         pdc_coproc_info->revision = pdc_result[17];
         pdc_coproc_info->model = pdc_result[18];
-        spin_unlock_irq(&pdc_lock);
+        spin_unlock_irqrestore(&pdc_lock, flags);
 
         return retval;
 }
@@ -320,14 +327,15 @@ int pdc_iodc_read(unsigned long *actcnt, unsigned long hpa, unsigned int index,
 		  void *iodc_data, unsigned int iodc_data_size)
 {
 	int retval;
+	unsigned long flags;
 
-	spin_lock_irq(&pdc_lock);
+	spin_lock_irqsave(&pdc_lock, flags);
 	retval = mem_pdc_call(PDC_IODC, PDC_IODC_READ, __pa(pdc_result), hpa, 
 			      index, __pa(pdc_result2), iodc_data_size);
 	convert_to_wide(pdc_result);
 	*actcnt = pdc_result[0];
 	memcpy(iodc_data, pdc_result2, iodc_data_size);
-	spin_unlock_irq(&pdc_lock);
+	spin_unlock_irqrestore(&pdc_lock, flags);
 
 	return retval;
 }
@@ -346,14 +354,15 @@ int pdc_system_map_find_mods(struct pdc_system_map_mod_info *pdc_mod_info,
 			     struct pdc_module_path *mod_path, long mod_index)
 {
 	int retval;
+	unsigned long flags;
 
-	spin_lock_irq(&pdc_lock);
+	spin_lock_irqsave(&pdc_lock, flags);
 	retval = mem_pdc_call(PDC_SYSTEM_MAP, PDC_FIND_MODULE, __pa(pdc_result), 
 			      __pa(pdc_result2), mod_index);
 	convert_to_wide(pdc_result);
 	memcpy(pdc_mod_info, pdc_result, sizeof(*pdc_mod_info));
 	memcpy(mod_path, pdc_result2, sizeof(*mod_path));
-	spin_unlock_irq(&pdc_lock);
+	spin_unlock_irqrestore(&pdc_lock, flags);
 
 	pdc_mod_info->mod_addr = f_extend(pdc_mod_info->mod_addr);
 	return retval;
@@ -372,13 +381,14 @@ int pdc_system_map_find_addrs(struct pdc_system_map_addr_info *pdc_addr_info,
 			      long mod_index, long addr_index)
 {
 	int retval;
+	unsigned long flags;
 
-	spin_lock_irq(&pdc_lock);
+	spin_lock_irqsave(&pdc_lock, flags);
 	retval = mem_pdc_call(PDC_SYSTEM_MAP, PDC_FIND_ADDRESS, __pa(pdc_result),
 			      mod_index, addr_index);
 	convert_to_wide(pdc_result);
 	memcpy(pdc_addr_info, pdc_result, sizeof(*pdc_addr_info));
-	spin_unlock_irq(&pdc_lock);
+	spin_unlock_irqrestore(&pdc_lock, flags);
 
 	pdc_addr_info->mod_addr = f_extend(pdc_addr_info->mod_addr);
 	return retval;
@@ -393,12 +403,13 @@ int pdc_system_map_find_addrs(struct pdc_system_map_addr_info *pdc_addr_info,
 int pdc_model_info(struct pdc_model *model) 
 {
 	int retval;
+	unsigned long flags;
 
-	spin_lock_irq(&pdc_lock);
+	spin_lock_irqsave(&pdc_lock, flags);
 	retval = mem_pdc_call(PDC_MODEL, PDC_MODEL_INFO, __pa(pdc_result), 0);
 	convert_to_wide(pdc_result);
 	memcpy(model, pdc_result, sizeof(*model));
-	spin_unlock_irq(&pdc_lock);
+	spin_unlock_irqrestore(&pdc_lock, flags);
 
 	return retval;
 }
@@ -414,8 +425,9 @@ int pdc_model_info(struct pdc_model *model)
 int pdc_model_sysmodel(char *name)
 {
         int retval;
+	unsigned long flags;
 
-        spin_lock_irq(&pdc_lock);
+        spin_lock_irqsave(&pdc_lock, flags);
         retval = mem_pdc_call(PDC_MODEL, PDC_MODEL_SYSMODEL, __pa(pdc_result),
                               OS_ID_HPUX, __pa(name));
         convert_to_wide(pdc_result);
@@ -425,7 +437,7 @@ int pdc_model_sysmodel(char *name)
         } else {
                 name[0] = 0;
         }
-        spin_unlock_irq(&pdc_lock);
+        spin_unlock_irqrestore(&pdc_lock, flags);
 
         return retval;
 }
@@ -443,12 +455,13 @@ int pdc_model_sysmodel(char *name)
 int pdc_model_versions(unsigned long *versions, int id)
 {
         int retval;
+	unsigned long flags;
 
-        spin_lock_irq(&pdc_lock);
+        spin_lock_irqsave(&pdc_lock, flags);
         retval = mem_pdc_call(PDC_MODEL, PDC_MODEL_VERSIONS, __pa(pdc_result), id);
         convert_to_wide(pdc_result);
         *versions = pdc_result[0];
-        spin_unlock_irq(&pdc_lock);
+        spin_unlock_irqrestore(&pdc_lock, flags);
 
         return retval;
 }
@@ -463,13 +476,14 @@ int pdc_model_versions(unsigned long *versions, int id)
 int pdc_model_cpuid(unsigned long *cpu_id)
 {
         int retval;
+	unsigned long flags;
 
-        spin_lock_irq(&pdc_lock);
+        spin_lock_irqsave(&pdc_lock, flags);
         pdc_result[0] = 0; /* preset zero (call may not be implemented!) */
         retval = mem_pdc_call(PDC_MODEL, PDC_MODEL_CPU_ID, __pa(pdc_result), 0);
         convert_to_wide(pdc_result);
         *cpu_id = pdc_result[0];
-        spin_unlock_irq(&pdc_lock);
+        spin_unlock_irqrestore(&pdc_lock, flags);
 
         return retval;
 }
@@ -484,13 +498,14 @@ int pdc_model_cpuid(unsigned long *cpu_id)
 int pdc_model_capabilities(unsigned long *capabilities)
 {
         int retval;
+	unsigned long flags;
 
-        spin_lock_irq(&pdc_lock);
+        spin_lock_irqsave(&pdc_lock, flags);
         pdc_result[0] = 0; /* preset zero (call may not be implemented!) */
         retval = mem_pdc_call(PDC_MODEL, PDC_MODEL_CAPABILITIES, __pa(pdc_result), 0);
         convert_to_wide(pdc_result);
         *capabilities = pdc_result[0];
-        spin_unlock_irq(&pdc_lock);
+        spin_unlock_irqrestore(&pdc_lock, flags);
 
         return retval;
 }
@@ -504,12 +519,13 @@ int pdc_model_capabilities(unsigned long *capabilities)
 int pdc_cache_info(struct pdc_cache_info *cache_info)
 {
         int retval;
+	unsigned long flags;
 
-        spin_lock_irq(&pdc_lock);
+        spin_lock_irqsave(&pdc_lock, flags);
         retval = mem_pdc_call(PDC_CACHE, PDC_CACHE_INFO, __pa(pdc_result), 0);
         convert_to_wide(pdc_result);
         memcpy(cache_info, pdc_result, sizeof(*cache_info));
-        spin_unlock_irq(&pdc_lock);
+        spin_unlock_irqrestore(&pdc_lock, flags);
 
         return retval;
 }
@@ -523,13 +539,14 @@ int pdc_cache_info(struct pdc_cache_info *cache_info)
 int pdc_spaceid_bits(unsigned long *space_bits)
 {
 	int retval;
+	unsigned long flags;
 
-	spin_lock_irq(&pdc_lock);
+	spin_lock_irqsave(&pdc_lock, flags);
 	pdc_result[0] = 0;
 	retval = mem_pdc_call(PDC_CACHE, PDC_CACHE_RET_SPID, __pa(pdc_result), 0);
 	convert_to_wide(pdc_result);
 	*space_bits = pdc_result[0];
-	spin_unlock_irq(&pdc_lock);
+	spin_unlock_irqrestore(&pdc_lock, flags);
 
 	return retval;
 }
@@ -544,11 +561,12 @@ int pdc_spaceid_bits(unsigned long *space_bits)
 int pdc_btlb_info(struct pdc_btlb_info *btlb) 
 {
         int retval;
+	unsigned long flags;
 
-        spin_lock_irq(&pdc_lock);
+        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));
-        spin_unlock_irq(&pdc_lock);
+        spin_unlock_irqrestore(&pdc_lock, flags);
 
         if(retval < 0) {
                 btlb->max_size = 0;
@@ -572,13 +590,14 @@ int pdc_mem_map_hpa(struct pdc_memory_map *address,
 		struct pdc_module_path *mod_path)
 {
         int retval;
+	unsigned long flags;
 
-        spin_lock_irq(&pdc_lock);
+        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),
 				__pa(pdc_result2));
         memcpy(address, pdc_result, sizeof(*address));
-        spin_unlock_irq(&pdc_lock);
+        spin_unlock_irqrestore(&pdc_lock, flags);
 
         return retval;
 }
@@ -594,8 +613,9 @@ int pdc_mem_map_hpa(struct pdc_memory_map *address,
 int pdc_lan_station_id(char *lan_addr, unsigned long hpa)
 {
 	int retval;
+	unsigned long flags;
 
-	spin_lock_irq(&pdc_lock);
+	spin_lock_irqsave(&pdc_lock, flags);
 	retval = mem_pdc_call(PDC_LAN_STATION_ID, PDC_LAN_STATION_ID_READ,
 			__pa(pdc_result), hpa);
 	if (retval < 0) {
@@ -604,7 +624,7 @@ int pdc_lan_station_id(char *lan_addr, unsigned long hpa)
 	} else {
 		memcpy(lan_addr, pdc_result, PDC_LAN_STATION_ID_SIZE);
 	}
-	spin_unlock_irq(&pdc_lock);
+	spin_unlock_irqrestore(&pdc_lock, flags);
 
 	return retval;
 }
@@ -623,13 +643,14 @@ EXPORT_SYMBOL(pdc_lan_station_id);
 int pdc_stable_read(unsigned long staddr, void *memaddr, unsigned long count)
 {
        int retval;
+	unsigned long flags;
 
-       spin_lock_irq(&pdc_lock);
+       spin_lock_irqsave(&pdc_lock, flags);
        retval = mem_pdc_call(PDC_STABLE, PDC_STABLE_READ, staddr,
                __pa(pdc_result), count);
        convert_to_wide(pdc_result);
        memcpy(memaddr, pdc_result, count);
-       spin_unlock_irq(&pdc_lock);
+       spin_unlock_irqrestore(&pdc_lock, flags);
 
        return retval;
 }
@@ -648,13 +669,14 @@ EXPORT_SYMBOL(pdc_stable_read);
 int pdc_stable_write(unsigned long staddr, void *memaddr, unsigned long count)
 {
        int retval;
+	unsigned long flags;
 
-       spin_lock_irq(&pdc_lock);
+       spin_lock_irqsave(&pdc_lock, flags);
        memcpy(pdc_result, memaddr, count);
        convert_to_wide(pdc_result);
        retval = mem_pdc_call(PDC_STABLE, PDC_STABLE_WRITE, staddr,
                __pa(pdc_result), count);
-       spin_unlock_irq(&pdc_lock);
+       spin_unlock_irqrestore(&pdc_lock, flags);
 
        return retval;
 }
@@ -672,11 +694,12 @@ EXPORT_SYMBOL(pdc_stable_write);
 int pdc_stable_get_size(unsigned long *size)
 {
        int retval;
+	unsigned long flags;
 
-       spin_lock_irq(&pdc_lock);
+       spin_lock_irqsave(&pdc_lock, flags);
        retval = mem_pdc_call(PDC_STABLE, PDC_STABLE_RETURN_SIZE, __pa(pdc_result));
        *size = pdc_result[0];
-       spin_unlock_irq(&pdc_lock);
+       spin_unlock_irqrestore(&pdc_lock, flags);
 
        return retval;
 }
@@ -691,10 +714,11 @@ EXPORT_SYMBOL(pdc_stable_get_size);
 int pdc_stable_verify_contents(void)
 {
        int retval;
+	unsigned long flags;
 
-       spin_lock_irq(&pdc_lock);
+       spin_lock_irqsave(&pdc_lock, flags);
        retval = mem_pdc_call(PDC_STABLE, PDC_STABLE_VERIFY_CONTENTS);
-       spin_unlock_irq(&pdc_lock);
+       spin_unlock_irqrestore(&pdc_lock, flags);
 
        return retval;
 }
@@ -709,10 +733,11 @@ EXPORT_SYMBOL(pdc_stable_verify_contents);
 int pdc_stable_initialize(void)
 {
        int retval;
+	unsigned long flags;
 
-       spin_lock_irq(&pdc_lock);
+       spin_lock_irqsave(&pdc_lock, flags);
        retval = mem_pdc_call(PDC_STABLE, PDC_STABLE_INITIALIZE);
-       spin_unlock_irq(&pdc_lock);
+       spin_unlock_irqrestore(&pdc_lock, flags);
 
        return retval;
 }
@@ -735,8 +760,9 @@ EXPORT_SYMBOL(pdc_stable_initialize);
 int pdc_get_initiator(struct hardware_path *hwpath, struct pdc_initiator *initiator)
 {
 	int retval;
+	unsigned long flags;
 
-	spin_lock_irq(&pdc_lock);
+	spin_lock_irqsave(&pdc_lock, flags);
 
 /* BCJ-XXXX series boxes. E.G. "9000/785/C3000" */
 #define IS_SPROCKETS() (strlen(boot_cpu_data.pdc.sys_model_name) == 14 && \
@@ -776,7 +802,8 @@ int pdc_get_initiator(struct hardware_path *hwpath, struct pdc_initiator *initia
 	}
 
  out:
-	spin_unlock_irq(&pdc_lock);
+	spin_unlock_irqrestore(&pdc_lock, flags);
+
 	return (retval >= PDC_OK);
 }
 EXPORT_SYMBOL(pdc_get_initiator);
@@ -794,13 +821,14 @@ EXPORT_SYMBOL(pdc_get_initiator);
 int pdc_pci_irt_size(unsigned long *num_entries, unsigned long hpa)
 {
 	int retval;
+	unsigned long flags;
 
-	spin_lock_irq(&pdc_lock);
+	spin_lock_irqsave(&pdc_lock, flags);
 	retval = mem_pdc_call(PDC_PCI_INDEX, PDC_PCI_GET_INT_TBL_SIZE, 
 			      __pa(pdc_result), hpa);
 	convert_to_wide(pdc_result);
 	*num_entries = pdc_result[0];
-	spin_unlock_irq(&pdc_lock);
+	spin_unlock_irqrestore(&pdc_lock, flags);
 
 	return retval;
 }
@@ -817,14 +845,15 @@ int pdc_pci_irt_size(unsigned long *num_entries, unsigned long hpa)
 int pdc_pci_irt(unsigned long num_entries, unsigned long hpa, void *tbl)
 {
 	int retval;
+	unsigned long flags;
 
 	BUG_ON((unsigned long)tbl & 0x7);
 
-	spin_lock_irq(&pdc_lock);
+	spin_lock_irqsave(&pdc_lock, flags);
 	pdc_result[0] = num_entries;
 	retval = mem_pdc_call(PDC_PCI_INDEX, PDC_PCI_GET_INT_TBL, 
 			      __pa(pdc_result), hpa, __pa(tbl));
-	spin_unlock_irq(&pdc_lock);
+	spin_unlock_irqrestore(&pdc_lock, flags);
 
 	return retval;
 }
@@ -842,12 +871,15 @@ int pdc_pci_irt(unsigned long num_entries, unsigned long hpa, void *tbl)
 unsigned int pdc_pci_config_read(void *hpa, unsigned long cfg_addr)
 {
 	int retval;
-	spin_lock_irq(&pdc_lock);
+	unsigned long flags;
+
+	spin_lock_irqsave(&pdc_lock, flags);
 	pdc_result[0] = 0;
 	pdc_result[1] = 0;
 	retval = mem_pdc_call(PDC_PCI_INDEX, PDC_PCI_READ_CONFIG, 
 			      __pa(pdc_result), hpa, cfg_addr&~3UL, 4UL);
-	spin_unlock_irq(&pdc_lock);
+	spin_unlock_irqrestore(&pdc_lock, flags);
+
 	return retval ? ~0 : (unsigned int) pdc_result[0];
 }
 
@@ -863,12 +895,15 @@ unsigned int pdc_pci_config_read(void *hpa, unsigned long cfg_addr)
 void pdc_pci_config_write(void *hpa, unsigned long cfg_addr, unsigned int val)
 {
 	int retval;
-	spin_lock_irq(&pdc_lock);
+	unsigned long flags;
+
+	spin_lock_irqsave(&pdc_lock, flags);
 	pdc_result[0] = 0;
 	retval = mem_pdc_call(PDC_PCI_INDEX, PDC_PCI_WRITE_CONFIG, 
 			      __pa(pdc_result), hpa,
 			      cfg_addr&~3UL, 4UL, (unsigned long) val);
-	spin_unlock_irq(&pdc_lock);
+	spin_unlock_irqrestore(&pdc_lock, flags);
+
 	return retval;
 }
 #endif /* UNTESTED CODE */
@@ -882,12 +917,13 @@ void pdc_pci_config_write(void *hpa, unsigned long cfg_addr, unsigned int val)
 int pdc_tod_read(struct pdc_tod *tod)
 {
         int retval;
+	unsigned long flags;
 
-        spin_lock_irq(&pdc_lock);
+        spin_lock_irqsave(&pdc_lock, flags);
         retval = mem_pdc_call(PDC_TOD, PDC_TOD_READ, __pa(pdc_result), 0);
         convert_to_wide(pdc_result);
         memcpy(tod, pdc_result, sizeof(*tod));
-        spin_unlock_irq(&pdc_lock);
+        spin_unlock_irqrestore(&pdc_lock, flags);
 
         return retval;
 }
@@ -903,10 +939,11 @@ EXPORT_SYMBOL(pdc_tod_read);
 int pdc_tod_set(unsigned long sec, unsigned long usec)
 {
         int retval;
+	unsigned long flags;
 
-        spin_lock_irq(&pdc_lock);
+        spin_lock_irqsave(&pdc_lock, flags);
         retval = mem_pdc_call(PDC_TOD, PDC_TOD_WRITE, sec, usec);
-        spin_unlock_irq(&pdc_lock);
+        spin_unlock_irqrestore(&pdc_lock, flags);
 
         return retval;
 }
@@ -917,13 +954,14 @@ int pdc_mem_mem_table(struct pdc_memory_table_raddr *r_addr,
 		struct pdc_memory_table *tbl, unsigned long entries)
 {
 	int retval;
+	unsigned long flags;
 
-	spin_lock_irq(&pdc_lock);
+	spin_lock_irqsave(&pdc_lock, flags);
 	retval = mem_pdc_call(PDC_MEM, PDC_MEM_TABLE, __pa(pdc_result), __pa(pdc_result2), entries);
 	convert_to_wide(pdc_result);
 	memcpy(r_addr, pdc_result, sizeof(*r_addr));
 	memcpy(tbl, pdc_result2, entries * sizeof(*tbl));
-	spin_unlock_irq(&pdc_lock);
+	spin_unlock_irqrestore(&pdc_lock, flags);
 
 	return retval;
 }
@@ -936,11 +974,12 @@ int pdc_mem_mem_table(struct pdc_memory_table_raddr *r_addr,
 int pdc_do_firm_test_reset(unsigned long ftc_bitmap)
 {
         int retval;
+	unsigned long flags;
 
-        spin_lock_irq(&pdc_lock);
+        spin_lock_irqsave(&pdc_lock, flags);
         retval = mem_pdc_call(PDC_BROADCAST_RESET, PDC_DO_FIRM_TEST_RESET,
                               PDC_FIRM_TEST_MAGIC, ftc_bitmap);
-        spin_unlock_irq(&pdc_lock);
+        spin_unlock_irqrestore(&pdc_lock, flags);
 
         return retval;
 }
@@ -953,10 +992,11 @@ int pdc_do_firm_test_reset(unsigned long ftc_bitmap)
 int pdc_do_reset(void)
 {
         int retval;
+	unsigned long flags;
 
-        spin_lock_irq(&pdc_lock);
+        spin_lock_irqsave(&pdc_lock, flags);
         retval = mem_pdc_call(PDC_BROADCAST_RESET, PDC_DO_RESET);
-        spin_unlock_irq(&pdc_lock);
+        spin_unlock_irqrestore(&pdc_lock, flags);
 
         return retval;
 }
@@ -970,16 +1010,17 @@ int pdc_do_reset(void)
 int __init pdc_soft_power_info(unsigned long *power_reg)
 {
 	int retval;
+	unsigned long flags;
 
 	*power_reg = (unsigned long) (-1);
 	
-	spin_lock_irq(&pdc_lock);
+	spin_lock_irqsave(&pdc_lock, flags);
 	retval = mem_pdc_call(PDC_SOFT_POWER, PDC_SOFT_POWER_INFO, __pa(pdc_result), 0);
 	if (retval == PDC_OK) {
                 convert_to_wide(pdc_result);
                 *power_reg = f_extend(pdc_result[0]);
 	}
-	spin_unlock_irq(&pdc_lock);
+	spin_unlock_irqrestore(&pdc_lock, flags);
 
 	return retval;
 }
@@ -998,9 +1039,12 @@ int __init pdc_soft_power_info(unsigned long *power_reg)
 int pdc_soft_power_button(int sw_control)
 {
 	int retval;
-	spin_lock_irq(&pdc_lock);
+	unsigned long flags;
+
+	spin_lock_irqsave(&pdc_lock, flags);
 	retval = mem_pdc_call(PDC_SOFT_POWER, PDC_SOFT_POWER_ENABLE, __pa(pdc_result), sw_control);
-	spin_unlock_irq(&pdc_lock);
+	spin_unlock_irqrestore(&pdc_lock, flags);
+
 	return retval;
 }
 
@@ -1011,9 +1055,11 @@ int pdc_soft_power_button(int sw_control)
  */
 void pdc_io_reset(void)
 {
-	spin_lock_irq(&pdc_lock);  
+	unsigned long flags;
+
+	spin_lock_irqsave(&pdc_lock, flags);
 	mem_pdc_call(PDC_IO, PDC_IO_RESET, 0);
-	spin_unlock_irq(&pdc_lock);
+	spin_unlock_irqrestore(&pdc_lock, flags);
 }
 
 /*
@@ -1027,9 +1073,11 @@ void pdc_io_reset(void)
  */
 void pdc_io_reset_devices(void)
 {
-	spin_lock_irq(&pdc_lock);  
+	unsigned long flags;
+
+	spin_lock_irqsave(&pdc_lock, flags);
 	mem_pdc_call(PDC_IO, PDC_IO_RESET_DEVICES, 0);
-	spin_unlock_irq(&pdc_lock);
+	spin_unlock_irqrestore(&pdc_lock, flags);
 }
 
 
@@ -1146,10 +1194,11 @@ int pdc_sti_call(unsigned long func, unsigned long flags,
                  unsigned long glob_cfg)
 {
         int retval;
+	unsigned long irqflags;
 
-        spin_lock_irq(&pdc_lock);  
+        spin_lock_irqsave(&pdc_lock, irqflags);  
         retval = real32_call(func, flags, inptr, outputr, glob_cfg);
-        spin_unlock_irq(&pdc_lock);
+        spin_unlock_irqrestore(&pdc_lock, irqflags);
 
         return retval;
 }
@@ -1166,11 +1215,12 @@ EXPORT_SYMBOL(pdc_sti_call);
 int pdc_pat_cell_get_number(struct pdc_pat_cell_num *cell_info)
 {
 	int retval;
+	unsigned long flags;
 
-	spin_lock_irq(&pdc_lock);
+	spin_lock_irqsave(&pdc_lock, flags);
 	retval = mem_pdc_call(PDC_PAT_CELL, PDC_PAT_CELL_GET_NUMBER, __pa(pdc_result));
 	memcpy(cell_info, pdc_result, sizeof(*cell_info));
-	spin_unlock_irq(&pdc_lock);
+	spin_unlock_irqrestore(&pdc_lock, flags);
 
 	return retval;
 }
@@ -1190,16 +1240,17 @@ int pdc_pat_cell_module(unsigned long *actcnt, unsigned long ploc, unsigned long
 			unsigned long view_type, void *mem_addr)
 {
 	int retval;
+	unsigned long flags;
 	static struct pdc_pat_cell_mod_maddr_block result __attribute__ ((aligned (8)));
 
-	spin_lock_irq(&pdc_lock);
+	spin_lock_irqsave(&pdc_lock, flags);
 	retval = mem_pdc_call(PDC_PAT_CELL, PDC_PAT_CELL_MODULE, __pa(pdc_result), 
 			      ploc, mod, view_type, __pa(&result));
 	if(!retval) {
 		*actcnt = pdc_result[0];
 		memcpy(mem_addr, &result, *actcnt);
 	}
-	spin_unlock_irq(&pdc_lock);
+	spin_unlock_irqrestore(&pdc_lock, flags);
 
 	return retval;
 }
@@ -1214,12 +1265,13 @@ int pdc_pat_cell_module(unsigned long *actcnt, unsigned long ploc, unsigned long
 int pdc_pat_cpu_get_number(struct pdc_pat_cpu_num *cpu_info, void *hpa)
 {
 	int retval;
+	unsigned long flags;
 
-	spin_lock_irq(&pdc_lock);
+	spin_lock_irqsave(&pdc_lock, flags);
 	retval = mem_pdc_call(PDC_PAT_CPU, PDC_PAT_CPU_GET_NUMBER,
 			      __pa(&pdc_result), hpa);
 	memcpy(cpu_info, pdc_result, sizeof(*cpu_info));
-	spin_unlock_irq(&pdc_lock);
+	spin_unlock_irqrestore(&pdc_lock, flags);
 
 	return retval;
 }
@@ -1235,12 +1287,13 @@ int pdc_pat_cpu_get_number(struct pdc_pat_cpu_num *cpu_info, void *hpa)
 int pdc_pat_get_irt_size(unsigned long *num_entries, unsigned long cell_num)
 {
 	int retval;
+	unsigned long flags;
 
-	spin_lock_irq(&pdc_lock);
+	spin_lock_irqsave(&pdc_lock, flags);
 	retval = mem_pdc_call(PDC_PAT_IO, PDC_PAT_IO_GET_PCI_ROUTING_TABLE_SIZE,
 			      __pa(pdc_result), cell_num);
 	*num_entries = pdc_result[0];
-	spin_unlock_irq(&pdc_lock);
+	spin_unlock_irqrestore(&pdc_lock, flags);
 
 	return retval;
 }
@@ -1255,11 +1308,12 @@ int pdc_pat_get_irt_size(unsigned long *num_entries, unsigned long cell_num)
 int pdc_pat_get_irt(void *r_addr, unsigned long cell_num)
 {
 	int retval;
+	unsigned long flags;
 
-	spin_lock_irq(&pdc_lock);
+	spin_lock_irqsave(&pdc_lock, flags);
 	retval = mem_pdc_call(PDC_PAT_IO, PDC_PAT_IO_GET_PCI_ROUTING_TABLE,
 			      __pa(r_addr), cell_num);
-	spin_unlock_irq(&pdc_lock);
+	spin_unlock_irqrestore(&pdc_lock, flags);
 
 	return retval;
 }
@@ -1276,13 +1330,14 @@ int pdc_pat_pd_get_addr_map(unsigned long *actual_len, void *mem_addr,
 			    unsigned long count, unsigned long offset)
 {
 	int retval;
+	unsigned long flags;
 
-	spin_lock_irq(&pdc_lock);
+	spin_lock_irqsave(&pdc_lock, flags);
 	retval = mem_pdc_call(PDC_PAT_PD, PDC_PAT_PD_GET_ADDR_MAP, __pa(pdc_result), 
 			      __pa(pdc_result2), count, offset);
 	*actual_len = pdc_result[0];
 	memcpy(mem_addr, pdc_result2, *actual_len);
-	spin_unlock_irq(&pdc_lock);
+	spin_unlock_irqrestore(&pdc_lock, flags);
 
 	return retval;
 }
@@ -1297,7 +1352,9 @@ int pdc_pat_pd_get_addr_map(unsigned long *actual_len, void *mem_addr,
 int pdc_pat_io_pci_cfg_read(unsigned long pci_addr, int pci_size, u32 *mem_addr)
 {
 	int retval;
-	spin_lock_irq(&pdc_lock);
+	unsigned long flags;
+
+	spin_lock_irqsave(&pdc_lock, flags);
 	retval = mem_pdc_call(PDC_PAT_IO, PDC_PAT_IO_PCI_CONFIG_READ,
 					__pa(pdc_result), pci_addr, pci_size);
 	switch(pci_size) {
@@ -1305,7 +1362,7 @@ int pdc_pat_io_pci_cfg_read(unsigned long pci_addr, int pci_size, u32 *mem_addr)
 		case 2: *(u16 *)mem_addr =  (u16) pdc_result[0];
 		case 4: *(u32 *)mem_addr =  (u32) pdc_result[0];
 	}
-	spin_unlock_irq(&pdc_lock);
+	spin_unlock_irqrestore(&pdc_lock, flags);
 
 	return retval;
 }
@@ -1321,11 +1378,12 @@ int pdc_pat_io_pci_cfg_read(unsigned long pci_addr, int pci_size, u32 *mem_addr)
 int pdc_pat_io_pci_cfg_write(unsigned long pci_addr, int pci_size, u32 val)
 {
 	int retval;
+	unsigned long flags;
 
-	spin_lock_irq(&pdc_lock);
+	spin_lock_irqsave(&pdc_lock, flags);
 	retval = mem_pdc_call(PDC_PAT_IO, PDC_PAT_IO_PCI_CONFIG_WRITE,
 				pci_addr, pci_size, val);
-	spin_unlock_irq(&pdc_lock);
+	spin_unlock_irqrestore(&pdc_lock, flags);
 
 	return retval;
 }
diff --git a/arch/parisc/kernel/irq.c b/arch/parisc/kernel/irq.c
index 2ece7c7939f..b39c5b9aff4 100644
--- a/arch/parisc/kernel/irq.c
+++ b/arch/parisc/kernel/irq.c
@@ -347,12 +347,14 @@ static inline int eirr_to_irq(unsigned long eirr)
 /* ONLY called from entry.S:intr_extint() */
 void do_cpu_irq_mask(struct pt_regs *regs)
 {
+	struct pt_regs *old_regs;
 	unsigned long eirr_val;
 	int irq, cpu = smp_processor_id();
 #ifdef CONFIG_SMP
 	cpumask_t dest;
 #endif
 
+	old_regs = set_irq_regs(regs);
 	local_irq_disable();
 	irq_enter();
 
@@ -379,6 +381,7 @@ void do_cpu_irq_mask(struct pt_regs *regs)
 
  out:
 	irq_exit();
+	set_irq_regs(old_regs);
 	return;
 
  set_out:
diff --git a/arch/parisc/kernel/smp.c b/arch/parisc/kernel/smp.c
index faad338f310..4a23a97b06c 100644
--- a/arch/parisc/kernel/smp.c
+++ b/arch/parisc/kernel/smp.c
@@ -154,7 +154,7 @@ halt_processor(void)
 
 
 irqreturn_t
-ipi_interrupt(int irq, void *dev_id, struct pt_regs *regs) 
+ipi_interrupt(int irq, void *dev_id) 
 {
 	int this_cpu = smp_processor_id();
 	struct cpuinfo_parisc *p = &cpu_data[this_cpu];
@@ -414,19 +414,6 @@ smp_flush_tlb_all(void)
 	on_each_cpu(flush_tlb_all_local, NULL, 1, 1);
 }
 
-
-void 
-smp_do_timer(struct pt_regs *regs)
-{
-	int cpu = smp_processor_id();
-	struct cpuinfo_parisc *data = &cpu_data[cpu];
-
-        if (!--data->prof_counter) {
-		data->prof_counter = data->prof_multiplier;
-		update_process_times(user_mode(regs));
-	}
-}
-
 /*
  * Called by secondaries to update state and initialize CPU registers.
  */
diff --git a/arch/parisc/kernel/time.c b/arch/parisc/kernel/time.c
index b44839203e6..bad7d1eb62b 100644
--- a/arch/parisc/kernel/time.c
+++ b/arch/parisc/kernel/time.c
@@ -34,10 +34,6 @@
 
 static unsigned long clocktick __read_mostly;	/* timer cycles per tick */
 
-#ifdef CONFIG_SMP
-extern void smp_do_timer(struct pt_regs *regs);
-#endif
-
 /*
  * We keep time on PA-RISC Linux by using the Interval Timer which is
  * a pair of registers; one is read-only and one is write-only; both
@@ -55,13 +51,14 @@ extern void smp_do_timer(struct pt_regs *regs);
  * held off for an arbitrarily long period of time by interrupts being
  * disabled, so we may miss one or more ticks.
  */
-irqreturn_t timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+irqreturn_t timer_interrupt(int irq, void *dev_id)
 {
 	unsigned long now;
 	unsigned long next_tick;
 	unsigned long cycles_elapsed, ticks_elapsed;
 	unsigned long cycles_remainder;
 	unsigned int cpu = smp_processor_id();
+	struct cpuinfo_parisc *cpuinfo = &cpu_data[cpu];
 
 	/* gcc can optimize for "read-only" case with a local clocktick */
 	unsigned long cpt = clocktick;
@@ -69,7 +66,7 @@ irqreturn_t timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
 	profile_tick(CPU_PROFILING);
 
 	/* Initialize next_tick to the expected tick time. */
-	next_tick = cpu_data[cpu].it_value;
+	next_tick = cpuinfo->it_value;
 
 	/* Get current interval timer.
 	 * CR16 reads as 64 bits in CPU wide mode.
@@ -120,7 +117,7 @@ irqreturn_t timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
 	 */
 	next_tick = now + cycles_remainder;
 
-	cpu_data[cpu].it_value = next_tick;
+	cpuinfo->it_value = next_tick;
 
 	/* Skip one clocktick on purpose if we are likely to miss next_tick.
 	 * We want to avoid the new next_tick being less than CR16.
@@ -131,18 +128,19 @@ irqreturn_t timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
 		next_tick += cpt;
 
 	/* Program the IT when to deliver the next interrupt. */
-        /* Only bottom 32-bits of next_tick are written to cr16.  */
+	/* Only bottom 32-bits of next_tick are written to cr16.  */
 	mtctl(next_tick, 16);
 
 
 	/* Done mucking with unreliable delivery of interrupts.
 	 * Go do system house keeping.
 	 */
-#ifdef CONFIG_SMP
-	smp_do_timer(regs);
-#else
-	update_process_times(user_mode(regs));
-#endif
+
+	if (!--cpuinfo->prof_counter) {
+		cpuinfo->prof_counter = cpuinfo->prof_multiplier;
+		update_process_times(user_mode(get_irq_regs()));
+	}
+
 	if (cpu == 0) {
 		write_seqlock(&xtime_lock);
 		do_timer(ticks_elapsed);
@@ -319,13 +317,15 @@ void __init time_init(void)
 
 	start_cpu_itimer();	/* get CPU 0 started */
 
-	if(pdc_tod_read(&tod_data) == 0) {
-		write_seqlock_irq(&xtime_lock);
+	if (pdc_tod_read(&tod_data) == 0) {
+		unsigned long flags;
+
+		write_seqlock_irqsave(&xtime_lock, flags);
 		xtime.tv_sec = tod_data.tod_sec;
 		xtime.tv_nsec = tod_data.tod_usec * 1000;
 		set_normalized_timespec(&wall_to_monotonic,
 		                        -xtime.tv_sec, -xtime.tv_nsec);
-		write_sequnlock_irq(&xtime_lock);
+		write_sequnlock_irqrestore(&xtime_lock, flags);
 	} else {
 		printk(KERN_ERR "Error reading tod clock\n");
 	        xtime.tv_sec = 0;