Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hskinnemoen/avr32-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hskinnemoen/avr32-2.6:
  [AVR32] Fix random segfault with preemption
  [AVR32] Don't use __builtin_xchg()
  [AVR32] ngw100 i2c-gpio tweaks
  [AVR32] Ignore a few irrelevant syscalls
  [AVR32] SMC configuration in clock cycles
  [AVR32] Drop support for redundant "keepinitrd" boot-time parm.
  [AVR32] Make dma_sync_*_for_cpu no-ops
  [AVR32] Remove unneeded 8K alignment of .text section
  [AVR32] Kill a few hardcoded constants in vmlinux.lds
  [AVR32] rename vmlinux.lds
  [AVR32] fix command line parsing in early_parse_fbmem
  [AVR32] checkstack support
  [AVR32] Wire up USBA device
  [AVR32] add multidrive support for pio driver
  [AVR32] /sys/kernel/debug/at32ap_clk
  [AVR32] Move AT32_PM_BASE definition into pm.h

4 files changed, 31 insertions, 11 deletions

diff --git a/arch/avr32/kernel/Makefile b/arch/avr32/kernel/Makefile
index 90e5afff54a2..989fcd1fef7e 100644
--- a/arch/avr32/kernel/Makefile
+++ b/arch/avr32/kernel/Makefile
@@ -11,8 +11,3 @@ obj-y				+= signal.o sys_avr32.o process.o time.o
 obj-y				+= init_task.o switch_to.o cpu.o
 obj-$(CONFIG_MODULES)		+= module.o avr32_ksyms.o
 obj-$(CONFIG_KPROBES)		+= kprobes.o
-
-USE_STANDARD_AS_RULE		:= true
-
-%.lds: %.lds.c FORCE
-	$(call if_changed_dep,cpp_lds_S)
diff --git a/arch/avr32/kernel/entry-avr32b.S b/arch/avr32/kernel/entry-avr32b.S
index 42657f1703b2..ccadfd9b438d 100644
--- a/arch/avr32/kernel/entry-avr32b.S
+++ b/arch/avr32/kernel/entry-avr32b.S
@@ -159,11 +159,18 @@ handle_vmalloc_miss:
 
 	.section .scall.text,"ax",@progbits
 system_call:
+#ifdef CONFIG_PREEMPT
+	mask_interrupts
+#endif
 	pushm	r12		/* r12_orig */
 	stmts	--sp, r0-lr
-	zero_fp
+
 	mfsr	r0, SYSREG_RAR_SUP
 	mfsr	r1, SYSREG_RSR_SUP
+#ifdef CONFIG_PREEMPT
+	unmask_interrupts
+#endif
+	zero_fp
 	stm	--sp, r0-r1
 
 	/* check for syscall tracing */
@@ -638,6 +645,13 @@ irq_level\level:
 	stmts	--sp,r0-lr
 	mfsr	r8, rar_int\level
 	mfsr	r9, rsr_int\level
+
+#ifdef CONFIG_PREEMPT
+	sub	r11, pc, (. - system_call)
+	cp.w	r11, r8
+	breq	4f
+#endif
+
 	pushm	r8-r9
 
 	mov	r11, sp
@@ -668,6 +682,16 @@ irq_level\level:
 	sub	sp, -4		/* ignore r12_orig */
 	rete
 
+#ifdef CONFIG_PREEMPT
+4:	mask_interrupts
+	mfsr	r8, rsr_int\level
+	sbr	r8, 16
+	mtsr	rsr_int\level, r8
+	ldmts	sp++, r0-lr
+	sub	sp, -4		/* ignore r12_orig */
+	rete
+#endif
+
 2:	get_thread_info	r0
 	ld.w	r1, r0[TI_flags]
 	bld	r1, TIF_CPU_GOING_TO_SLEEP
diff --git a/arch/avr32/kernel/setup.c b/arch/avr32/kernel/setup.c
index d08b0bc6b2bb..4b4c1884e1c5 100644
--- a/arch/avr32/kernel/setup.c
+++ b/arch/avr32/kernel/setup.c
@@ -248,7 +248,7 @@ static int __init early_parse_fbmem(char *p)
 
 	fbmem_size = memparse(p, &p);
 	if (*p == '@') {
-		fbmem_start = memparse(p, &p);
+		fbmem_start = memparse(p + 1, &p);
 		ret = add_reserved_region(fbmem_start,
 					  fbmem_start + fbmem_size - 1,
 					  "Framebuffer");
diff --git a/arch/avr32/kernel/vmlinux.lds.c b/arch/avr32/kernel/vmlinux.lds.S
index db0438f35c00..ce9ac9659883 100644
--- a/arch/avr32/kernel/vmlinux.lds.c
+++ b/arch/avr32/kernel/vmlinux.lds.S
@@ -9,6 +9,8 @@
  */
 #define LOAD_OFFSET 0x00000000
 #include <asm-generic/vmlinux.lds.h>
+#include <asm/cache.h>
+#include <asm/thread_info.h>
 
 OUTPUT_FORMAT("elf32-avr32", "elf32-avr32", "elf32-avr32")
 OUTPUT_ARCH(avr32)
@@ -58,11 +60,10 @@ SECTIONS
 			*(.init.ramfs)
 		__initramfs_end = .;
 #endif
-		. = ALIGN(4096);
+		. = ALIGN(PAGE_SIZE);
 		__init_end = .;
 	}
 
-	. = ALIGN(8192);
 	.text		: AT(ADDR(.text) - LOAD_OFFSET) {
 		_evba = .;
 		_text = .;
@@ -96,7 +97,7 @@ SECTIONS
 
 	RODATA
 
-	. = ALIGN(8192);
+	. = ALIGN(THREAD_SIZE);
 
 	.data		: AT(ADDR(.data) - LOAD_OFFSET) {
 		_data = .;
@@ -107,7 +108,7 @@ SECTIONS
 		*(.data.init_task)
 
 		/* Then, the cacheline aligned data */
-		. = ALIGN(32);
+		. = ALIGN(L1_CACHE_BYTES);
 		*(.data.cacheline_aligned)
 
 		/* And the rest... */