Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6

* 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6:
  [SPARC/64]: Consolidate of_register_driver
  [SPARC] Videopix Frame Grabber: Convert device_lock_sem to mutex
  [SPARC]: Support for new termios.
  [SPARC64]: Check of_get_property() return in pci_determine_mem_io_space().
  [SPARC64]: Fix boot failures due to bootmem.
  [SPARC64]: Implement atomic backoff.

6 files changed, 59 insertions, 64 deletions

diff --git a/arch/sparc/kernel/of_device.c b/arch/sparc/kernel/of_device.c
index fb2caef79cec..3ea000d15e3a 100644
--- a/arch/sparc/kernel/of_device.c
+++ b/arch/sparc/kernel/of_device.c
@@ -585,24 +585,6 @@ static int __init of_debug(char *str)
 
 __setup("of_debug=", of_debug);
 
-int of_register_driver(struct of_platform_driver *drv, struct bus_type *bus)
-{
-	/* initialize common driver fields */
-	if (!drv->driver.name)
-		drv->driver.name = drv->name;
-	if (!drv->driver.owner)
-		drv->driver.owner = drv->owner;
-	drv->driver.bus = bus;
-
-	/* register with core */
-	return driver_register(&drv->driver);
-}
-
-void of_unregister_driver(struct of_platform_driver *drv)
-{
-	driver_unregister(&drv->driver);
-}
-
 struct of_device* of_platform_device_create(struct device_node *np,
 					    const char *bus_id,
 					    struct device *parent,
@@ -628,6 +610,4 @@ struct of_device* of_platform_device_create(struct device_node *np,
 	return dev;
 }
 
-EXPORT_SYMBOL(of_register_driver);
-EXPORT_SYMBOL(of_unregister_driver);
 EXPORT_SYMBOL(of_platform_device_create);
diff --git a/arch/sparc64/kernel/irq.c b/arch/sparc64/kernel/irq.c
index f3922e5a89f6..2c3bea228159 100644
--- a/arch/sparc64/kernel/irq.c
+++ b/arch/sparc64/kernel/irq.c
@@ -877,7 +877,7 @@ void __cpuinit sun4v_register_mondo_queues(int this_cpu)
 static void __init alloc_one_mondo(unsigned long *pa_ptr, unsigned long qmask)
 {
 	unsigned long size = PAGE_ALIGN(qmask + 1);
-	void *p = __alloc_bootmem_low(size, size, 0);
+	void *p = __alloc_bootmem(size, size, 0);
 	if (!p) {
 		prom_printf("SUN4V: Error, cannot allocate mondo queue.\n");
 		prom_halt();
@@ -889,7 +889,7 @@ static void __init alloc_one_mondo(unsigned long *pa_ptr, unsigned long qmask)
 static void __init alloc_one_kbuf(unsigned long *pa_ptr, unsigned long qmask)
 {
 	unsigned long size = PAGE_ALIGN(qmask + 1);
-	void *p = __alloc_bootmem_low(size, size, 0);
+	void *p = __alloc_bootmem(size, size, 0);
 
 	if (!p) {
 		prom_printf("SUN4V: Error, cannot allocate kbuf page.\n");
@@ -906,7 +906,7 @@ static void __init init_cpu_send_mondo_info(struct trap_per_cpu *tb)
 
 	BUILD_BUG_ON((NR_CPUS * sizeof(u16)) > (PAGE_SIZE - 64));
 
-	page = alloc_bootmem_low_pages(PAGE_SIZE);
+	page = alloc_bootmem_pages(PAGE_SIZE);
 	if (!page) {
 		prom_printf("SUN4V: Error, cannot allocate cpu mondo page.\n");
 		prom_halt();
@@ -953,7 +953,7 @@ void __init init_IRQ(void)
 	kill_prom_timer();
 
 	size = sizeof(struct ino_bucket) * NUM_IVECS;
-	ivector_table = alloc_bootmem_low(size);
+	ivector_table = alloc_bootmem(size);
 	if (!ivector_table) {
 		prom_printf("Fatal error, cannot allocate ivector_table\n");
 		prom_halt();
diff --git a/arch/sparc64/kernel/of_device.c b/arch/sparc64/kernel/of_device.c
index 42d779866fba..fc5c0cc793b8 100644
--- a/arch/sparc64/kernel/of_device.c
+++ b/arch/sparc64/kernel/of_device.c
@@ -869,26 +869,6 @@ static int __init of_debug(char *str)
 
 __setup("of_debug=", of_debug);
 
-int of_register_driver(struct of_platform_driver *drv, struct bus_type *bus)
-{
-	/* initialize common driver fields */
-	if (!drv->driver.name)
-		drv->driver.name = drv->name;
-	if (!drv->driver.owner)
-		drv->driver.owner = drv->owner;
-	drv->driver.bus = bus;
-
-	/* register with core */
-	return driver_register(&drv->driver);
-}
-EXPORT_SYMBOL(of_register_driver);
-
-void of_unregister_driver(struct of_platform_driver *drv)
-{
-	driver_unregister(&drv->driver);
-}
-EXPORT_SYMBOL(of_unregister_driver);
-
 struct of_device* of_platform_device_create(struct device_node *np,
 					    const char *bus_id,
 					    struct device *parent,
diff --git a/arch/sparc64/kernel/pci_common.c b/arch/sparc64/kernel/pci_common.c
index c76bfbb7da08..923e0bcc3bfd 100644
--- a/arch/sparc64/kernel/pci_common.c
+++ b/arch/sparc64/kernel/pci_common.c
@@ -396,6 +396,13 @@ void pci_determine_mem_io_space(struct pci_pbm_info *pbm)
 
 	saw_mem = saw_io = 0;
 	pbm_ranges = of_get_property(pbm->prom_node, "ranges", &i);
+	if (!pbm_ranges) {
+		prom_printf("PCI: Fatal error, missing PBM ranges property "
+			    " for %s\n",
+			    pbm->name);
+		prom_halt();
+	}
+
 	num_pbm_ranges = i / sizeof(*pbm_ranges);
 
 	for (i = 0; i < num_pbm_ranges; i++) {
diff --git a/arch/sparc64/lib/atomic.S b/arch/sparc64/lib/atomic.S
index 9633750167d0..70ac4186f62b 100644
--- a/arch/sparc64/lib/atomic.S
+++ b/arch/sparc64/lib/atomic.S
@@ -1,10 +1,10 @@
-/* $Id: atomic.S,v 1.4 2001/11/18 00:12:56 davem Exp $
- * atomic.S: These things are too big to do inline.
+/* atomic.S: These things are too big to do inline.
  *
- * Copyright (C) 1999 David S. Miller (davem@redhat.com)
+ * Copyright (C) 1999, 2007 David S. Miller (davem@davemloft.net)
  */
 
 #include <asm/asi.h>
+#include <asm/backoff.h>
 
 	.text
 
@@ -16,27 +16,31 @@
 	.globl	atomic_add
 	.type	atomic_add,#function
 atomic_add: /* %o0 = increment, %o1 = atomic_ptr */
+	BACKOFF_SETUP(%o2)
 1:	lduw	[%o1], %g1
 	add	%g1, %o0, %g7
 	cas	[%o1], %g1, %g7
 	cmp	%g1, %g7
-	bne,pn	%icc, 1b
+	bne,pn	%icc, 2f
 	 nop
 	retl
 	 nop
+2:	BACKOFF_SPIN(%o2, %o3, 1b)
 	.size	atomic_add, .-atomic_add
 
 	.globl	atomic_sub
 	.type	atomic_sub,#function
 atomic_sub: /* %o0 = decrement, %o1 = atomic_ptr */
+	BACKOFF_SETUP(%o2)
 1:	lduw	[%o1], %g1
 	sub	%g1, %o0, %g7
 	cas	[%o1], %g1, %g7
 	cmp	%g1, %g7
-	bne,pn	%icc, 1b
+	bne,pn	%icc, 2f
 	 nop
 	retl
 	 nop
+2:	BACKOFF_SPIN(%o2, %o3, 1b)
 	.size	atomic_sub, .-atomic_sub
 
 	/* On SMP we need to use memory barriers to ensure
@@ -60,89 +64,101 @@ atomic_sub: /* %o0 = decrement, %o1 = atomic_ptr */
 	.globl	atomic_add_ret
 	.type	atomic_add_ret,#function
 atomic_add_ret: /* %o0 = increment, %o1 = atomic_ptr */
+	BACKOFF_SETUP(%o2)
 	ATOMIC_PRE_BARRIER
 1:	lduw	[%o1], %g1
 	add	%g1, %o0, %g7
 	cas	[%o1], %g1, %g7
 	cmp	%g1, %g7
-	bne,pn	%icc, 1b
+	bne,pn	%icc, 2f
 	 add	%g7, %o0, %g7
 	sra	%g7, 0, %o0
 	ATOMIC_POST_BARRIER
 	retl
 	 nop
+2:	BACKOFF_SPIN(%o2, %o3, 1b)
 	.size	atomic_add_ret, .-atomic_add_ret
 
 	.globl	atomic_sub_ret
 	.type	atomic_sub_ret,#function
 atomic_sub_ret: /* %o0 = decrement, %o1 = atomic_ptr */
+	BACKOFF_SETUP(%o2)
 	ATOMIC_PRE_BARRIER
 1:	lduw	[%o1], %g1
 	sub	%g1, %o0, %g7
 	cas	[%o1], %g1, %g7
 	cmp	%g1, %g7
-	bne,pn	%icc, 1b
+	bne,pn	%icc, 2f
 	 sub	%g7, %o0, %g7
 	sra	%g7, 0, %o0
 	ATOMIC_POST_BARRIER
 	retl
 	 nop
+2:	BACKOFF_SPIN(%o2, %o3, 1b)
 	.size	atomic_sub_ret, .-atomic_sub_ret
 
 	.globl	atomic64_add
 	.type	atomic64_add,#function
 atomic64_add: /* %o0 = increment, %o1 = atomic_ptr */
+	BACKOFF_SETUP(%o2)
 1:	ldx	[%o1], %g1
 	add	%g1, %o0, %g7
 	casx	[%o1], %g1, %g7
 	cmp	%g1, %g7
-	bne,pn	%xcc, 1b
+	bne,pn	%xcc, 2f
 	 nop
 	retl
 	 nop
+2:	BACKOFF_SPIN(%o2, %o3, 1b)
 	.size	atomic64_add, .-atomic64_add
 
 	.globl	atomic64_sub
 	.type	atomic64_sub,#function
 atomic64_sub: /* %o0 = decrement, %o1 = atomic_ptr */
+	BACKOFF_SETUP(%o2)
 1:	ldx	[%o1], %g1
 	sub	%g1, %o0, %g7
 	casx	[%o1], %g1, %g7
 	cmp	%g1, %g7
-	bne,pn	%xcc, 1b
+	bne,pn	%xcc, 2f
 	 nop
 	retl
 	 nop
+2:	BACKOFF_SPIN(%o2, %o3, 1b)
 	.size	atomic64_sub, .-atomic64_sub
 
 	.globl	atomic64_add_ret
 	.type	atomic64_add_ret,#function
 atomic64_add_ret: /* %o0 = increment, %o1 = atomic_ptr */
+	BACKOFF_SETUP(%o2)
 	ATOMIC_PRE_BARRIER
 1:	ldx	[%o1], %g1
 	add	%g1, %o0, %g7
 	casx	[%o1], %g1, %g7
 	cmp	%g1, %g7
-	bne,pn	%xcc, 1b
+	bne,pn	%xcc, 2f
 	 add	%g7, %o0, %g7
 	mov	%g7, %o0
 	ATOMIC_POST_BARRIER
 	retl
 	 nop
+2:	BACKOFF_SPIN(%o2, %o3, 1b)
 	.size	atomic64_add_ret, .-atomic64_add_ret
 
 	.globl	atomic64_sub_ret
 	.type	atomic64_sub_ret,#function
 atomic64_sub_ret: /* %o0 = decrement, %o1 = atomic_ptr */
+	BACKOFF_SETUP(%o2)
 	ATOMIC_PRE_BARRIER
 1:	ldx	[%o1], %g1
 	sub	%g1, %o0, %g7
 	casx	[%o1], %g1, %g7
 	cmp	%g1, %g7
-	bne,pn	%xcc, 1b
+	bne,pn	%xcc, 2f
 	 sub	%g7, %o0, %g7
 	mov	%g7, %o0
 	ATOMIC_POST_BARRIER
 	retl
 	 nop
+2:	BACKOFF_SPIN(%o2, %o3, 1b)
 	.size	atomic64_sub_ret, .-atomic64_sub_ret
diff --git a/arch/sparc64/lib/bitops.S b/arch/sparc64/lib/bitops.S
index 892431a82131..6b015a6eefb5 100644
--- a/arch/sparc64/lib/bitops.S
+++ b/arch/sparc64/lib/bitops.S
@@ -1,10 +1,10 @@
-/* $Id: bitops.S,v 1.3 2001/11/18 00:12:56 davem Exp $
- * bitops.S: Sparc64 atomic bit operations.
+/* bitops.S: Sparc64 atomic bit operations.
  *
- * Copyright (C) 2000 David S. Miller (davem@redhat.com)
+ * Copyright (C) 2000, 2007 David S. Miller (davem@davemloft.net)
  */
 
 #include <asm/asi.h>
+#include <asm/backoff.h>
 
 	.text
 
@@ -29,6 +29,7 @@
 	.globl	test_and_set_bit
 	.type	test_and_set_bit,#function
 test_and_set_bit:	/* %o0=nr, %o1=addr */
+	BACKOFF_SETUP(%o3)
 	BITOP_PRE_BARRIER
 	srlx	%o0, 6, %g1
 	mov	1, %o2
@@ -40,18 +41,20 @@ test_and_set_bit:	/* %o0=nr, %o1=addr */
 	or	%g7, %o2, %g1
 	casx	[%o1], %g7, %g1
 	cmp	%g7, %g1
-	bne,pn	%xcc, 1b
+	bne,pn	%xcc, 2f
 	 and	%g7, %o2, %g2
 	clr	%o0
 	movrne	%g2, 1, %o0
 	BITOP_POST_BARRIER
 	retl
 	 nop
+2:	BACKOFF_SPIN(%o3, %o4, 1b)
 	.size	test_and_set_bit, .-test_and_set_bit
 
 	.globl	test_and_clear_bit
 	.type	test_and_clear_bit,#function
 test_and_clear_bit:	/* %o0=nr, %o1=addr */
+	BACKOFF_SETUP(%o3)
 	BITOP_PRE_BARRIER
 	srlx	%o0, 6, %g1
 	mov	1, %o2
@@ -63,18 +66,20 @@ test_and_clear_bit:	/* %o0=nr, %o1=addr */
 	andn	%g7, %o2, %g1
 	casx	[%o1], %g7, %g1
 	cmp	%g7, %g1
-	bne,pn	%xcc, 1b
+	bne,pn	%xcc, 2f
 	 and	%g7, %o2, %g2
 	clr	%o0
 	movrne	%g2, 1, %o0
 	BITOP_POST_BARRIER
 	retl
 	 nop
+2:	BACKOFF_SPIN(%o3, %o4, 1b)
 	.size	test_and_clear_bit, .-test_and_clear_bit
 
 	.globl	test_and_change_bit
 	.type	test_and_change_bit,#function
 test_and_change_bit:	/* %o0=nr, %o1=addr */
+	BACKOFF_SETUP(%o3)
 	BITOP_PRE_BARRIER
 	srlx	%o0, 6, %g1
 	mov	1, %o2
@@ -86,18 +91,20 @@ test_and_change_bit:	/* %o0=nr, %o1=addr */
 	xor	%g7, %o2, %g1
 	casx	[%o1], %g7, %g1
 	cmp	%g7, %g1
-	bne,pn	%xcc, 1b
+	bne,pn	%xcc, 2f
 	 and	%g7, %o2, %g2
 	clr	%o0
 	movrne	%g2, 1, %o0
 	BITOP_POST_BARRIER
 	retl
 	 nop
+2:	BACKOFF_SPIN(%o3, %o4, 1b)
 	.size	test_and_change_bit, .-test_and_change_bit
 
 	.globl	set_bit
 	.type	set_bit,#function
 set_bit:		/* %o0=nr, %o1=addr */
+	BACKOFF_SETUP(%o3)
 	srlx	%o0, 6, %g1
 	mov	1, %o2
 	sllx	%g1, 3, %g3
@@ -108,15 +115,17 @@ set_bit:		/* %o0=nr, %o1=addr */
 	or	%g7, %o2, %g1
 	casx	[%o1], %g7, %g1
 	cmp	%g7, %g1
-	bne,pn	%xcc, 1b
+	bne,pn	%xcc, 2f
 	 nop
 	retl
 	 nop
+2:	BACKOFF_SPIN(%o3, %o4, 1b)
 	.size	set_bit, .-set_bit
 
 	.globl	clear_bit
 	.type	clear_bit,#function
 clear_bit:		/* %o0=nr, %o1=addr */
+	BACKOFF_SETUP(%o3)
 	srlx	%o0, 6, %g1
 	mov	1, %o2
 	sllx	%g1, 3, %g3
@@ -127,15 +136,17 @@ clear_bit:		/* %o0=nr, %o1=addr */
 	andn	%g7, %o2, %g1
 	casx	[%o1], %g7, %g1
 	cmp	%g7, %g1
-	bne,pn	%xcc, 1b
+	bne,pn	%xcc, 2f
 	 nop
 	retl
 	 nop
+2:	BACKOFF_SPIN(%o3, %o4, 1b)
 	.size	clear_bit, .-clear_bit
 
 	.globl	change_bit
 	.type	change_bit,#function
 change_bit:		/* %o0=nr, %o1=addr */
+	BACKOFF_SETUP(%o3)
 	srlx	%o0, 6, %g1
 	mov	1, %o2
 	sllx	%g1, 3, %g3
@@ -146,8 +157,9 @@ change_bit:		/* %o0=nr, %o1=addr */
 	xor	%g7, %o2, %g1
 	casx	[%o1], %g7, %g1
 	cmp	%g7, %g1
-	bne,pn	%xcc, 1b
+	bne,pn	%xcc, 2f
 	 nop
 	retl
 	 nop
+2:	BACKOFF_SPIN(%o3, %o4, 1b)
 	.size	change_bit, .-change_bit