drm: merge in Linus mainline

11 files changed, 89 insertions, 50 deletions

diff --git a/arch/arm/kernel/apm.c b/arch/arm/kernel/apm.c
index b0bbd1e62eb..a2843be0555 100644
--- a/arch/arm/kernel/apm.c
+++ b/arch/arm/kernel/apm.c
@@ -20,6 +20,7 @@
 #include <linux/apm_bios.h>
 #include <linux/sched.h>
 #include <linux/pm.h>
+#include <linux/pm_legacy.h>
 #include <linux/device.h>
 #include <linux/kernel.h>
 #include <linux/list.h>
diff --git a/arch/arm/kernel/armksyms.c b/arch/arm/kernel/armksyms.c
index 7a3261f0bf7..9997098009a 100644
--- a/arch/arm/kernel/armksyms.c
+++ b/arch/arm/kernel/armksyms.c
@@ -120,7 +120,6 @@ EXPORT_SYMBOL(__arch_strncpy_from_user);
 EXPORT_SYMBOL(__get_user_1);
 EXPORT_SYMBOL(__get_user_2);
 EXPORT_SYMBOL(__get_user_4);
-EXPORT_SYMBOL(__get_user_8);
 
 EXPORT_SYMBOL(__put_user_1);
 EXPORT_SYMBOL(__put_user_2);
diff --git a/arch/arm/kernel/calls.S b/arch/arm/kernel/calls.S
index 2ad4aa2a153..55076a75e5b 100644
--- a/arch/arm/kernel/calls.S
+++ b/arch/arm/kernel/calls.S
@@ -131,7 +131,7 @@ __syscall_start:
 		.long	sys_wait4
 /* 115 */	.long	sys_swapoff
 		.long	sys_sysinfo
-		.long	sys_ipc_wrapper
+		.long	sys_ipc
 		.long	sys_fsync
 		.long	sys_sigreturn_wrapper
 /* 120 */	.long	sys_clone_wrapper
@@ -254,7 +254,7 @@ __syscall_start:
 		.long	sys_fremovexattr
 		.long	sys_tkill
 		.long	sys_sendfile64
-/* 240 */	.long	sys_futex_wrapper
+/* 240 */	.long	sys_futex
 		.long	sys_sched_setaffinity
 		.long	sys_sched_getaffinity
 		.long	sys_io_setup
@@ -284,7 +284,7 @@ __syscall_start:
 		.long	sys_fstatfs64
 		.long	sys_tgkill
 		.long	sys_utimes
-/* 270 */	.long	sys_arm_fadvise64_64_wrapper
+/* 270 */	.long	sys_arm_fadvise64_64
 		.long	sys_pciconfig_iobase
 		.long	sys_pciconfig_read
 		.long	sys_pciconfig_write
@@ -333,7 +333,7 @@ __syscall_start:
 		.long	sys_inotify_init
 		.long	sys_inotify_add_watch
 		.long	sys_inotify_rm_watch
-		.long	sys_mbind_wrapper
+		.long	sys_mbind
 /* 320 */	.long	sys_get_mempolicy
 		.long	sys_set_mempolicy
 __syscall_end:
diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S
index d9fb819bf7c..2a8d27e18fa 100644
--- a/arch/arm/kernel/entry-armv.S
+++ b/arch/arm/kernel/entry-armv.S
@@ -614,6 +614,47 @@ __kuser_helper_start:
 /*
  * Reference prototype:
  *
+ *	void __kernel_memory_barrier(void)
+ *
+ * Input:
+ *
+ *	lr = return address
+ *
+ * Output:
+ *
+ *	none
+ *
+ * Clobbered:
+ *
+ *	the Z flag might be lost
+ *
+ * Definition and user space usage example:
+ *
+ *	typedef void (__kernel_dmb_t)(void);
+ *	#define __kernel_dmb (*(__kernel_dmb_t *)0xffff0fa0)
+ *
+ * Apply any needed memory barrier to preserve consistency with data modified
+ * manually and __kuser_cmpxchg usage.
+ *
+ * This could be used as follows:
+ *
+ * #define __kernel_dmb() \
+ *         asm volatile ( "mov r0, #0xffff0fff; mov lr, pc; sub pc, r0, #95" \
+ *	        : : : "lr","cc" )
+ */
+
+__kuser_memory_barrier:				@ 0xffff0fa0
+
+#if __LINUX_ARM_ARCH__ >= 6 && defined(CONFIG_SMP)
+	mcr	p15, 0, r0, c7, c10, 5	@ dmb
+#endif
+	mov	pc, lr
+
+	.align	5
+
+/*
+ * Reference prototype:
+ *
  *	int __kernel_cmpxchg(int oldval, int newval, int *ptr)
  *
  * Input:
@@ -642,6 +683,8 @@ __kuser_helper_start:
  * The C flag is also set if *ptr was changed to allow for assembly
  * optimization in the calling code.
  *
+ * Note: this routine already includes memory barriers as needed.
+ *
  * For example, a user space atomic_add implementation could look like this:
  *
  * #define atomic_add(ptr, val) \
@@ -698,10 +741,16 @@ __kuser_cmpxchg:				@ 0xffff0fc0
 
 #else
 
+#ifdef CONFIG_SMP
+	mcr	p15, 0, r0, c7, c10, 5	@ dmb
+#endif
 	ldrex	r3, [r2]
 	subs	r3, r3, r0
 	strexeq	r3, r1, [r2]
 	rsbs	r0, r3, #0
+#ifdef CONFIG_SMP
+	mcr	p15, 0, r0, c7, c10, 5	@ dmb
+#endif
 	mov	pc, lr
 
 #endif
diff --git a/arch/arm/kernel/entry-common.S b/arch/arm/kernel/entry-common.S
index 066597f4345..e2b42997ad3 100644
--- a/arch/arm/kernel/entry-common.S
+++ b/arch/arm/kernel/entry-common.S
@@ -48,8 +48,7 @@ work_pending:
 	mov	r0, sp				@ 'regs'
 	mov	r2, why				@ 'syscall'
 	bl	do_notify_resume
-	disable_irq				@ disable interrupts
-	b	no_work_pending
+	b	ret_slow_syscall		@ Check work again
 
 work_resched:
 	bl	schedule
@@ -146,7 +145,7 @@ ENTRY(vector_swi)
 #endif
 	enable_irq
 
-	str	r4, [sp, #-S_OFF]!		@ push fifth arg
+	stmdb	sp!, {r4, r5}			@ push fifth and sixth args
 
 	get_thread_info tsk
 	ldr	ip, [tsk, #TI_FLAGS]		@ check for syscall tracing
@@ -205,7 +204,7 @@ ENTRY(sys_call_table)
  * Special system call wrappers
  */
 @ r0 = syscall number
-@ r5 = syscall table
+@ r8 = syscall table
 		.type	sys_syscall, #function
 sys_syscall:
 		eor	scno, r0, #__NR_SYSCALL_BASE
@@ -256,22 +255,6 @@ sys_sigaltstack_wrapper:
 		ldr	r2, [sp, #S_OFF + S_SP]
 		b	do_sigaltstack
 
-sys_futex_wrapper:
-		str	r5, [sp, #4]		@ push sixth arg
-		b	sys_futex
-
-sys_arm_fadvise64_64_wrapper:
-		str	r5, [sp, #4]		@ push r5 to stack
-		b	sys_arm_fadvise64_64
-
-sys_mbind_wrapper:
-		str	r5, [sp, #4]
-		b	sys_mbind
-
-sys_ipc_wrapper:
-		str	r5, [sp, #4]		@ push sixth arg
-		b	sys_ipc
-
 /*
  * Note: off_4k (r5) is always units of 4K.  If we can't do the requested
  * offset, we return EINVAL.
diff --git a/arch/arm/kernel/head.S b/arch/arm/kernel/head.S
index 8d8748407cb..d7d69fd7039 100644
--- a/arch/arm/kernel/head.S
+++ b/arch/arm/kernel/head.S
@@ -17,7 +17,6 @@
 
 #include <asm/assembler.h>
 #include <asm/domain.h>
-#include <asm/mach-types.h>
 #include <asm/procinfo.h>
 #include <asm/ptrace.h>
 #include <asm/asm-offsets.h>
@@ -83,7 +82,7 @@ ENTRY(stext)
 						@ and irqs disabled
 	bl	__lookup_processor_type		@ r5=procinfo r9=cpuid
 	movs	r10, r5				@ invalid processor (r5=0)?
-	beq	__error_p				@ yes, error 'p'
+	beq	__error_p			@ yes, error 'p'
 	bl	__lookup_machine_type		@ r5=machinfo
 	movs	r8, r5				@ invalid machine (r5=0)?
 	beq	__error_a			@ yes, error 'a'
@@ -343,16 +342,12 @@ __create_page_tables:
 	bne	1b
 #if defined(CONFIG_ARCH_NETWINDER) || defined(CONFIG_ARCH_CATS)
 	/*
-	 * If we're using the NetWinder, we need to map in
-	 * the 16550-type serial port for the debug messages
+	 * If we're using the NetWinder or CATS, we also need to map
+	 * in the 16550-type serial port for the debug messages
 	 */
-	teq	r1, #MACH_TYPE_NETWINDER
-	teqne	r1, #MACH_TYPE_CATS
-	bne	1f
 	add	r0, r4, #0xff000000 >> 18
 	orr	r3, r7, #0x7c000000
 	str	r3, [r0]
-1:
 #endif
 #ifdef CONFIG_ARCH_RPC
 	/*
diff --git a/arch/arm/kernel/module.c b/arch/arm/kernel/module.c
index 6055e1427ba..055bf5d2889 100644
--- a/arch/arm/kernel/module.c
+++ b/arch/arm/kernel/module.c
@@ -101,6 +101,8 @@ apply_relocate(Elf32_Shdr *sechdrs, const char *strtab, unsigned int symindex,
 			break;
 
 		case R_ARM_PC24:
+		case R_ARM_CALL:
+		case R_ARM_JUMP24:
 			offset = (*(u32 *)loc & 0x00ffffff) << 2;
 			if (offset & 0x02000000)
 				offset -= 0x04000000;
diff --git a/arch/arm/kernel/ptrace.c b/arch/arm/kernel/ptrace.c
index 9a340e790da..2b84f78d7b0 100644
--- a/arch/arm/kernel/ptrace.c
+++ b/arch/arm/kernel/ptrace.c
@@ -242,6 +242,15 @@ get_branch_address(struct task_struct *child, unsigned long pc, unsigned long in
 		 */
 		long aluop1, aluop2, ccbit;
 
+	        if ((insn & 0x0fffffd0) == 0x012fff10) {
+		        /*
+			 * bx or blx
+			 */
+			alt = get_user_reg(child, insn & 15);
+			break;
+		}
+
+
 		if ((insn & 0xf000) != 0xf000)
 			break;
 
diff --git a/arch/arm/kernel/signal.c b/arch/arm/kernel/signal.c
index a917e3dd366..765922bcf9e 100644
--- a/arch/arm/kernel/signal.c
+++ b/arch/arm/kernel/signal.c
@@ -595,23 +595,22 @@ handle_signal(unsigned long sig, struct k_sigaction *ka,
 	 */
 	ret |= !valid_user_regs(regs);
 
-	/*
-	 * Block the signal if we were unsuccessful.
-	 */
 	if (ret != 0) {
-		spin_lock_irq(&tsk->sighand->siglock);
-		sigorsets(&tsk->blocked, &tsk->blocked,
-			  &ka->sa.sa_mask);
-		if (!(ka->sa.sa_flags & SA_NODEFER))
-			sigaddset(&tsk->blocked, sig);
-		recalc_sigpending();
-		spin_unlock_irq(&tsk->sighand->siglock);
+		force_sigsegv(sig, tsk);
+		return;
 	}
 
-	if (ret == 0)
-		return;
+	/*
+	 * Block the signal if we were successful.
+	 */
+	spin_lock_irq(&tsk->sighand->siglock);
+	sigorsets(&tsk->blocked, &tsk->blocked,
+		  &ka->sa.sa_mask);
+	if (!(ka->sa.sa_flags & SA_NODEFER))
+		sigaddset(&tsk->blocked, sig);
+	recalc_sigpending();
+	spin_unlock_irq(&tsk->sighand->siglock);
 
-	force_sigsegv(sig, tsk);
 }
 
 /*
diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
index e55ea952f7a..373c0959bc2 100644
--- a/arch/arm/kernel/smp.c
+++ b/arch/arm/kernel/smp.c
@@ -256,9 +256,7 @@ void __cpuexit cpu_die(void)
 asmlinkage void __cpuinit secondary_start_kernel(void)
 {
 	struct mm_struct *mm = &init_mm;
-	unsigned int cpu;
-
-	cpu = smp_processor_id();
+	unsigned int cpu = smp_processor_id();
 
 	printk("CPU%u: Booted secondary processor\n", cpu);
 
diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S
index 80c8e4c8cef..9a47770114d 100644
--- a/arch/arm/kernel/vmlinux.lds.S
+++ b/arch/arm/kernel/vmlinux.lds.S
@@ -172,6 +172,10 @@ SECTIONS
 	.comment 0 : { *(.comment) }
 }
 
-/* those must never be empty */
+/*
+ * These must never be empty
+ * If you have to comment these two assert statements out, your
+ * binutils is too old (for other reasons as well)
+ */
 ASSERT((__proc_info_end - __proc_info_begin), "missing CPU support")
 ASSERT((__arch_info_end - __arch_info_begin), "no machine record defined")