Merge branch 'upstream-fixes'

4 files changed, 32 insertions, 6 deletions

diff --git a/include/asm-ia64/ia32.h b/include/asm-ia64/ia32.h
index 8e746b2413a..f8044a1169c 100644
--- a/include/asm-ia64/ia32.h
+++ b/include/asm-ia64/ia32.h
@@ -13,6 +13,8 @@
 
 # ifdef CONFIG_IA32_SUPPORT
 
+#define IA32_PAGE_OFFSET	0xc0000000
+
 extern void ia32_cpu_init (void);
 extern void ia32_mem_init (void);
 extern void ia32_gdt_init (void);
diff --git a/include/asm-ia64/local.h b/include/asm-ia64/local.h
index 1dbd584ad85..dc519092ef4 100644
--- a/include/asm-ia64/local.h
+++ b/include/asm-ia64/local.h
@@ -17,8 +17,8 @@ typedef struct {
 #define local_set(l, i)	atomic64_set(&(l)->val, i)
 #define local_inc(l)	atomic64_inc(&(l)->val)
 #define local_dec(l)	atomic64_dec(&(l)->val)
-#define local_add(l)	atomic64_add(&(l)->val)
-#define local_sub(l)	atomic64_sub(&(l)->val)
+#define local_add(i, l)	atomic64_add((i), &(l)->val)
+#define local_sub(i, l)	atomic64_sub((i), &(l)->val)
 
 /* Non-atomic variants, i.e., preemption disabled and won't be touched in interrupt, etc.  */
 
diff --git a/include/asm-ia64/sn/pcidev.h b/include/asm-ia64/sn/pcidev.h
index 49711d00ad0..f65d222ca5e 100644
--- a/include/asm-ia64/sn/pcidev.h
+++ b/include/asm-ia64/sn/pcidev.h
@@ -3,15 +3,27 @@
  * License.  See the file "COPYING" in the main directory of this archive
  * for more details.
  *
- * Copyright (C) 1992 - 1997, 2000-2004 Silicon Graphics, Inc. All rights reserved.
+ * Copyright (C) 1992 - 1997, 2000-2005 Silicon Graphics, Inc. All rights reserved.
  */
 #ifndef _ASM_IA64_SN_PCI_PCIDEV_H
 #define _ASM_IA64_SN_PCI_PCIDEV_H
 
 #include <linux/pci.h>
 
-#define SN_PCIDEV_INFO(pci_dev) \
-        ((struct pcidev_info *)(pci_dev)->sysdata)
+/*
+ * In ia64, pci_dev->sysdata must be a *pci_controller. To provide access to
+ * the pcidev_info structs for all devices under a controller, we extend the
+ * definition of pci_controller, via sn_pci_controller, to include a list
+ * of pcidev_info.
+ */
+struct sn_pci_controller {
+	struct pci_controller pci_controller;
+	struct list_head pcidev_info;
+};
+
+#define SN_PCI_CONTROLLER(dev) ((struct sn_pci_controller *) dev->sysdata)
+
+#define SN_PCIDEV_INFO(dev)	sn_pcidev_info_get(dev)
 
 #define SN_PCIBUS_BUSSOFT_INFO(pci_bus) \
 	(struct pcibus_info *)((struct pcibus_bussoft *)(PCI_CONTROLLER((pci_bus))->platform_data))
@@ -53,11 +65,13 @@ struct pcidev_info {
 	struct sn_irq_info	*pdi_sn_irq_info;
 	struct sn_pcibus_provider *pdi_provider;	/* sn pci ops */
 	struct pci_dev 		*host_pci_dev;		/* host bus link */
+	struct list_head	pdi_list;		/* List of pcidev_info */
 };
 
 extern void sn_irq_fixup(struct pci_dev *pci_dev,
 			 struct sn_irq_info *sn_irq_info);
 extern void sn_irq_unfixup(struct pci_dev *pci_dev);
+extern struct pcidev_info * sn_pcidev_info_get(struct pci_dev *);
 extern void sn_pci_controller_fixup(int segment, int busnum,
  				    struct pci_bus *bus);
 extern void sn_bus_store_sysdata(struct pci_dev *dev);
diff --git a/include/asm-ia64/spinlock.h b/include/asm-ia64/spinlock.h
index 5b78611411c..0c91a76c5ea 100644
--- a/include/asm-ia64/spinlock.h
+++ b/include/asm-ia64/spinlock.h
@@ -201,6 +201,16 @@ static inline void __raw_write_unlock(raw_rwlock_t *x)
 
 #endif /* !ASM_SUPPORTED */
 
-#define __raw_read_trylock(lock) generic__raw_read_trylock(lock)
+static inline int __raw_read_trylock(raw_rwlock_t *x)
+{
+	union {
+		raw_rwlock_t lock;
+		__u32 word;
+	} old, new;
+	old.lock = new.lock = *x;
+	old.lock.write_lock = new.lock.write_lock = 0;
+	++new.lock.read_counter;
+	return (u32)ia64_cmpxchg4_acq((__u32 *)(x), new.word, old.word) == old.word;
+}
 
 #endif /*  _ASM_IA64_SPINLOCK_H */