12 files changed, 32 insertions, 48 deletions

diff --git a/arch/arm/kernel/apm.c b/arch/arm/kernel/apm.c
index 766b6c05c6db..2bed290fec76 100644
--- a/arch/arm/kernel/apm.c
+++ b/arch/arm/kernel/apm.c
@@ -357,10 +357,8 @@ static int apm_open(struct inode * inode, struct file * filp)
 {
 	struct apm_user *as;
 
-	as = (struct apm_user *)kmalloc(sizeof(*as), GFP_KERNEL);
+	as = (struct apm_user *)kzalloc(sizeof(*as), GFP_KERNEL);
 	if (as) {
-		memset(as, 0, sizeof(*as));
-
 		/*
 		 * XXX - this is a tiny bit broken, when we consider BSD
 		 * process accounting. If the device is opened by root, we
diff --git a/arch/arm/kernel/bios32.c b/arch/arm/kernel/bios32.c
index c4923fac8dff..de606dfa8db9 100644
--- a/arch/arm/kernel/bios32.c
+++ b/arch/arm/kernel/bios32.c
@@ -540,12 +540,10 @@ static void __init pcibios_init_hw(struct hw_pci *hw)
 	int nr, busnr;
 
 	for (nr = busnr = 0; nr < hw->nr_controllers; nr++) {
-		sys = kmalloc(sizeof(struct pci_sys_data), GFP_KERNEL);
+		sys = kzalloc(sizeof(struct pci_sys_data), GFP_KERNEL);
 		if (!sys)
 			panic("PCI: unable to allocate sys data!");
 
-		memset(sys, 0, sizeof(struct pci_sys_data));
-
 		sys->hw      = hw;
 		sys->busnr   = busnr;
 		sys->swizzle = hw->swizzle;
diff --git a/arch/arm/kernel/debug.S b/arch/arm/kernel/debug.S
index caaa919ab47a..da280bae3d07 100644
--- a/arch/arm/kernel/debug.S
+++ b/arch/arm/kernel/debug.S
@@ -11,7 +11,6 @@
  */
 #include <linux/config.h>
 #include <linux/linkage.h>
-#include <asm/hardware.h>
 
 		.text
 
diff --git a/arch/arm/kernel/ecard.c b/arch/arm/kernel/ecard.c
index 74ea29c3205e..00aa225e8d95 100644
--- a/arch/arm/kernel/ecard.c
+++ b/arch/arm/kernel/ecard.c
@@ -807,14 +807,12 @@ static struct expansion_card *__init ecard_alloc_card(int type, int slot)
 	unsigned long base;
 	int i;
 
-	ec = kmalloc(sizeof(ecard_t), GFP_KERNEL);
+	ec = kzalloc(sizeof(ecard_t), GFP_KERNEL);
 	if (!ec) {
 		ec = ERR_PTR(-ENOMEM);
 		goto nomem;
 	}
 
-	memset(ec, 0, sizeof(ecard_t));
-
 	ec->slot_no = slot;
 	ec->type = type;
 	ec->irq = NO_IRQ;
diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S
index ec48d70c6d8b..355914ffb192 100644
--- a/arch/arm/kernel/entry-armv.S
+++ b/arch/arm/kernel/entry-armv.S
@@ -484,7 +484,6 @@ call_fpe:
 	movcss	r7, r5, lsr #(TIF_USING_IWMMXT + 1)
 	bcs	iwmmxt_task_enable
 #endif
-	enable_irq
 	add	pc, pc, r8, lsr #6
 	mov	r0, r0
 
@@ -511,6 +510,7 @@ call_fpe:
 	mov	pc, lr				@ CP#15 (Control)
 
 do_fpe:
+	enable_irq
 	ldr	r4, .LCfp
 	add	r10, r10, #TI_FPSTATE		@ r10 = workspace
 	ldr	pc, [r4]			@ Call FP module USR entry point
diff --git a/arch/arm/kernel/entry-header.S b/arch/arm/kernel/entry-header.S
index 55c99cdab7d6..f1c2fd5b63e4 100644
--- a/arch/arm/kernel/entry-header.S
+++ b/arch/arm/kernel/entry-header.S
@@ -37,24 +37,6 @@
 #endif
 	.endm
 
-#if __LINUX_ARM_ARCH__ >= 6
-	.macro	disable_irq
-	cpsid	i
-	.endm
-
-	.macro	enable_irq
-	cpsie	i
-	.endm
-#else
-	.macro	disable_irq
-	msr	cpsr_c, #PSR_I_BIT | SVC_MODE
-	.endm
-
-	.macro	enable_irq
-	msr	cpsr_c, #SVC_MODE
-	.endm
-#endif
-
 	.macro	get_thread_info, rd
 	mov	\rd, sp, lsr #13
 	mov	\rd, \rd, lsl #13
diff --git a/arch/arm/kernel/head.S b/arch/arm/kernel/head.S
index 1aca1775b28f..53b6901f70a6 100644
--- a/arch/arm/kernel/head.S
+++ b/arch/arm/kernel/head.S
@@ -28,10 +28,9 @@
 #define PROCINFO_INITFUNC	12
 
 #define MACHINFO_TYPE		0
-#define MACHINFO_PHYSRAM	4
-#define MACHINFO_PHYSIO		8
-#define MACHINFO_PGOFFIO	12
-#define MACHINFO_NAME		16
+#define MACHINFO_PHYSIO		4
+#define MACHINFO_PGOFFIO	8
+#define MACHINFO_NAME		12
 
 #define KERNEL_RAM_ADDR	(PAGE_OFFSET + TEXT_OFFSET)
 
@@ -82,6 +81,7 @@
 ENTRY(stext)
 	msr	cpsr_c, #PSR_F_BIT | PSR_I_BIT | MODE_SVC @ ensure svc mode
 						@ and irqs disabled
+	mrc	p15, 0, r9, c0, c0		@ get processor id
 	bl	__lookup_processor_type		@ r5=procinfo r9=cpuid
 	movs	r10, r5				@ invalid processor (r5=0)?
 	beq	__error_p			@ yes, error 'p'
@@ -156,6 +156,7 @@ ENTRY(secondary_startup)
 	 * as it has already been validated by the primary processor.
 	 */
 	msr	cpsr_c, #PSR_F_BIT | PSR_I_BIT | MODE_SVC
+	mrc	p15, 0, r9, c0, c0		@ get processor id
 	bl	__lookup_processor_type
 	movs	r10, r5				@ invalid processor?
 	moveq	r0, #'p'			@ yes, error 'p'
@@ -450,19 +451,19 @@ __error:
  * (and therefore, we are not in the correct address space).  We have to
  * calculate the offset.
  *
+ *	r9 = cpuid
  * Returns:
  *	r3, r4, r6 corrupted
  *	r5 = proc_info pointer in physical address space
- *	r9 = cpuid
+ *	r9 = cpuid (preserved)
  */
 	.type	__lookup_processor_type, %function
 __lookup_processor_type:
 	adr	r3, 3f
-	ldmda	r3, {r5, r6, r9}
-	sub	r3, r3, r9			@ get offset between virt&phys
+	ldmda	r3, {r5 - r7}
+	sub	r3, r3, r7			@ get offset between virt&phys
 	add	r5, r5, r3			@ convert virt addresses to
 	add	r6, r6, r3			@ physical address space
-	mrc	p15, 0, r9, c0, c0		@ get processor id
 1:	ldmia	r5, {r3, r4}			@ value, mask
 	and	r4, r4, r9			@ mask wanted bits
 	teq	r3, r4
@@ -477,10 +478,11 @@ __lookup_processor_type:
  * This provides a C-API version of the above function.
  */
 ENTRY(lookup_processor_type)
-	stmfd	sp!, {r4 - r6, r9, lr}
+	stmfd	sp!, {r4 - r7, r9, lr}
+	mov	r9, r0
 	bl	__lookup_processor_type
 	mov	r0, r5
-	ldmfd	sp!, {r4 - r6, r9, pc}
+	ldmfd	sp!, {r4 - r7, r9, pc}
 
 /*
  * Look in include/asm-arm/procinfo.h and arch/arm/kernel/arch.[ch] for
diff --git a/arch/arm/kernel/irq.c b/arch/arm/kernel/irq.c
index 1d50d2b98f55..2d5896b36181 100644
--- a/arch/arm/kernel/irq.c
+++ b/arch/arm/kernel/irq.c
@@ -305,14 +305,19 @@ report_bad_irq(unsigned int irq, struct pt_regs *regs, struct irqdesc *desc, int
 	static int count = 100;
 	struct irqaction *action;
 
-	if (!count || noirqdebug)
+	if (noirqdebug)
 		return;
 
-	count--;
-
 	if (ret != IRQ_HANDLED && ret != IRQ_NONE) {
+		if (!count)
+			return;
+		count--;
 		printk("irq%u: bogus retval mask %x\n", irq, ret);
 	} else {
+		desc->irqs_unhandled++;
+		if (desc->irqs_unhandled <= 99900)
+			return;
+		desc->irqs_unhandled = 0;
 		printk("irq%u: nobody cared\n", irq);
 	}
 	show_regs(regs);
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index 08974cbe9824..b7cd280bfd63 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -278,7 +278,7 @@ int cpu_architecture(void)
  * These functions re-use the assembly code in head.S, which
  * already provide the required functionality.
  */
-extern struct proc_info_list *lookup_processor_type(void);
+extern struct proc_info_list *lookup_processor_type(unsigned int);
 extern struct machine_desc *lookup_machine_type(unsigned int);
 
 static void __init setup_processor(void)
@@ -290,7 +290,7 @@ static void __init setup_processor(void)
 	 * types.  The linker builds this table for us from the
 	 * entries in arch/arm/mm/proc-*.S
 	 */
-	list = lookup_processor_type();
+	list = lookup_processor_type(processor_id);
 	if (!list) {
 		printk("CPU configuration botched (ID %08x), unable "
 		       "to continue.\n", processor_id);
diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
index 02aa300c4633..1370d726dc10 100644
--- a/arch/arm/kernel/smp.c
+++ b/arch/arm/kernel/smp.c
@@ -337,9 +337,6 @@ void __init smp_prepare_boot_cpu(void)
 	unsigned int cpu = smp_processor_id();
 
 	per_cpu(cpu_data, cpu).idle = current;
-
-	cpu_set(cpu, cpu_present_map);
-	cpu_set(cpu, cpu_online_map);
 }
 
 static void send_ipi_message(cpumask_t callmap, enum ipi_msg_type msg)
diff --git a/arch/arm/kernel/sys_arm.c b/arch/arm/kernel/sys_arm.c
index a491de2d9024..8170af471439 100644
--- a/arch/arm/kernel/sys_arm.c
+++ b/arch/arm/kernel/sys_arm.c
@@ -234,7 +234,12 @@ asmlinkage int sys_ipc(uint call, int first, int second, int third,
  */
 asmlinkage int sys_fork(struct pt_regs *regs)
 {
+#ifdef CONFIG_MMU
 	return do_fork(SIGCHLD, regs->ARM_sp, regs, 0, NULL, NULL);
+#else
+	/* can not support in nommu mode */
+	return(-EINVAL);
+#endif
 }
 
 /* Clone a task - this clones the calling program thread.
diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c
index 03924bcc6129..d566d5f4574d 100644
--- a/arch/arm/kernel/traps.c
+++ b/arch/arm/kernel/traps.c
@@ -506,7 +506,7 @@ asmlinkage int arm_syscall(int no, struct pt_regs *regs)
 		if (!pmd_present(*pmd))
 			goto bad_access;
 		pte = pte_offset_map_lock(mm, pmd, addr, &ptl);
-		if (!pte_present(*pte) || !pte_write(*pte)) {
+		if (!pte_present(*pte) || !pte_dirty(*pte)) {
 			pte_unmap_unlock(pte, ptl);
 			goto bad_access;
 		}