Merge tag 'for-4.21' of git://git.armlinux.org.uk/~rmk/linux-arm

Pull ARM updates from Russell King:
 "Included in this update:

   - Florian Fainelli noticed that userspace segfaults caused by the
     lack of kernel-userspace helpers was hard to diagnose; we now issue
     a warning when userspace tries to use the helpers but the kernel
     has them disabled.

   - Ben Dooks wants compatibility for the old ATAG serial number with
     DT systems.

   - Some cleanup of assembly by Nicolas Pitre.

   - User accessors optimisation from Vincent Whitchurch.

   - More robust kdump on SMP systems from Yufen Wang.

   - Sebastian Andrzej Siewior noticed problems with the SMP "boot_lock"
     on RT kernels, and so we convert the Versatile series of platforms
     to use a raw spinlock instead, consolidating the Versatile
     implementation. We entirely remove the boot_lock on OMAP systems,
     where it's unnecessary. Further patches for other systems will be
     submitted for the following merge window.

   - Start switching old StrongARM-11x0 systems to use gpiolib rather
     than their private GPIO implementation - mostly PCMCIA bits.

   - ARM Kconfig cleanups.

   - Cleanup a mostly harmless mistake in the recent Spectre patch in
     4.20 (which had the effect that data that can be placed into the
     init sections was incorrectly always placed in the rodata section)"

* tag 'for-4.21' of git://git.armlinux.org.uk/~rmk/linux-arm: (25 commits)
  ARM: omap2: remove unnecessary boot_lock
  ARM: versatile: rename and comment SMP implementation
  ARM: versatile: convert boot_lock to raw
  ARM: vexpress/realview: consolidate immitation CPU hotplug
  ARM: fix the cockup in the previous patch
  ARM: sa1100/cerf: switch to using gpio_led_register_device()
  ARM: sa1100/assabet: switch to using gpio leds
  ARM: sa1100/assabet: add gpio keys support for right-hand two buttons
  ARM: sa1111: remove legacy GPIO interfaces
  pcmcia: sa1100*: remove redundant bvd1/bvd2 setting
  ARM: pxa/lubbock: switch PCMCIA to MAX1600 library
  ARM: pxa/mainstone: switch PCMCIA to MAX1600 library and gpiod APIs
  ARM: sa1100/neponset: switch PCMCIA to MAX1600 library and gpiod APIs
  ARM: sa1100/jornada720: switch PCMCIA to gpiod APIs
  pcmcia: add MAX1600 library
  ARM: sa1100: explicitly register sa11x0-pcmcia devices
  ARM: 8813/1: Make aligned 2-byte getuser()/putuser() atomic on ARMv6+
  ARM: 8812/1: Optimise copy_{from/to}_user for !CPU_USE_DOMAINS
  ARM: 8811/1: always list both ldrd/strd registers explicitly
  ARM: 8808/1: kexec:offline panic_smp_self_stop CPU
  ...

48 files changed, 579 insertions, 593 deletions

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index a3f436ba554d..c1227757817b 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -28,14 +28,14 @@ config ARM
 	select ARCH_WANT_IPC_PARSE_VERSION
 	select BUILDTIME_EXTABLE_SORT if MMU
 	select CLONE_BACKWARDS
-	select CPU_PM if (SUSPEND || CPU_IDLE)
+	select CPU_PM if SUSPEND || CPU_IDLE
 	select DCACHE_WORD_ACCESS if HAVE_EFFICIENT_UNALIGNED_ACCESS
 	select DMA_REMAP if MMU
 	select EDAC_SUPPORT
 	select EDAC_ATOMIC_SCRUB
 	select GENERIC_ALLOCATOR
 	select GENERIC_ARCH_TOPOLOGY if ARM_CPU_TOPOLOGY
-	select GENERIC_ATOMIC64 if (CPU_V7M || CPU_V6 || !CPU_32v6K || !AEABI)
+	select GENERIC_ATOMIC64 if CPU_V7M || CPU_V6 || !CPU_32v6K || !AEABI
 	select GENERIC_CLOCKEVENTS_BROADCAST if SMP
 	select GENERIC_CPU_AUTOPROBE
 	select GENERIC_EARLY_IOREMAP
@@ -50,12 +50,12 @@ config ARM
 	select GENERIC_STRNLEN_USER
 	select HANDLE_DOMAIN_IRQ
 	select HARDIRQS_SW_RESEND
-	select HAVE_ARCH_AUDITSYSCALL if (AEABI && !OABI_COMPAT)
+	select HAVE_ARCH_AUDITSYSCALL if AEABI && !OABI_COMPAT
 	select HAVE_ARCH_BITREVERSE if (CPU_32v7M || CPU_32v7) && !CPU_32v6
 	select HAVE_ARCH_JUMP_LABEL if !XIP_KERNEL && !CPU_ENDIAN_BE32 && MMU
 	select HAVE_ARCH_KGDB if !CPU_ENDIAN_BE32 && MMU
 	select HAVE_ARCH_MMAP_RND_BITS if MMU
-	select HAVE_ARCH_SECCOMP_FILTER if (AEABI && !OABI_COMPAT)
+	select HAVE_ARCH_SECCOMP_FILTER if AEABI && !OABI_COMPAT
 	select HAVE_ARCH_THREAD_STRUCT_WHITELIST
 	select HAVE_ARCH_TRACEHOOK
 	select HAVE_ARM_SMCCC if CPU_V7
@@ -64,16 +64,16 @@ config ARM
 	select HAVE_C_RECORDMCOUNT
 	select HAVE_DEBUG_KMEMLEAK
 	select HAVE_DMA_CONTIGUOUS if MMU
-	select HAVE_DYNAMIC_FTRACE if (!XIP_KERNEL) && !CPU_ENDIAN_BE32 && MMU
+	select HAVE_DYNAMIC_FTRACE if !XIP_KERNEL && !CPU_ENDIAN_BE32 && MMU
 	select HAVE_DYNAMIC_FTRACE_WITH_REGS if HAVE_DYNAMIC_FTRACE
 	select HAVE_EFFICIENT_UNALIGNED_ACCESS if (CPU_V6 || CPU_V6K || CPU_V7) && MMU
 	select HAVE_EXIT_THREAD
-	select HAVE_FTRACE_MCOUNT_RECORD if (!XIP_KERNEL)
-	select HAVE_FUNCTION_GRAPH_TRACER if (!THUMB2_KERNEL)
-	select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
+	select HAVE_FTRACE_MCOUNT_RECORD if !XIP_KERNEL
+	select HAVE_FUNCTION_GRAPH_TRACER if !THUMB2_KERNEL
+	select HAVE_FUNCTION_TRACER if !XIP_KERNEL
 	select HAVE_GCC_PLUGINS
 	select HAVE_GENERIC_DMA_COHERENT
-	select HAVE_HW_BREAKPOINT if (PERF_EVENTS && (CPU_V6 || CPU_V6K || CPU_V7))
+	select HAVE_HW_BREAKPOINT if PERF_EVENTS && (CPU_V6 || CPU_V6K || CPU_V7)
 	select HAVE_IDE if PCI || ISA || PCMCIA
 	select HAVE_IRQ_TIME_ACCOUNTING
 	select HAVE_KERNEL_GZIP
@@ -82,15 +82,15 @@ config ARM
 	select HAVE_KERNEL_LZO
 	select HAVE_KERNEL_XZ
 	select HAVE_KPROBES if !XIP_KERNEL && !CPU_ENDIAN_BE32 && !CPU_V7M
-	select HAVE_KRETPROBES if (HAVE_KPROBES)
+	select HAVE_KRETPROBES if HAVE_KPROBES
 	select HAVE_MOD_ARCH_SPECIFIC
 	select HAVE_NMI
-	select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
+	select HAVE_OPROFILE if HAVE_PERF_EVENTS
 	select HAVE_OPTPROBES if !THUMB2_KERNEL
 	select HAVE_PERF_EVENTS
 	select HAVE_PERF_REGS
 	select HAVE_PERF_USER_STACK_DUMP
-	select HAVE_RCU_TABLE_FREE if (SMP && ARM_LPAE)
+	select HAVE_RCU_TABLE_FREE if SMP && ARM_LPAE
 	select HAVE_REGS_AND_STACK_ACCESS_API
 	select HAVE_RSEQ
 	select HAVE_STACKPROTECTOR
@@ -1738,7 +1738,6 @@ config PARAVIRT
 config PARAVIRT_TIME_ACCOUNTING
 	bool "Paravirtual steal time accounting"
 	select PARAVIRT
-	default n
 	help
 	  Select this option to enable fine granularity task steal time
 	  accounting. Time spent executing other tasks in parallel with
diff --git a/arch/arm/boot/compressed/atags_to_fdt.c b/arch/arm/boot/compressed/atags_to_fdt.c
index 41fa7316c52b..330cd3c2eae5 100644
--- a/arch/arm/boot/compressed/atags_to_fdt.c
+++ b/arch/arm/boot/compressed/atags_to_fdt.c
@@ -98,6 +98,24 @@ static void merge_fdt_bootargs(void *fdt, const char *fdt_cmdline)
 	setprop_string(fdt, "/chosen", "bootargs", cmdline);
 }
 
+static void hex_str(char *out, uint32_t value)
+{
+	uint32_t digit;
+	int idx;
+
+	for (idx = 7; idx >= 0; idx--) {
+		digit = value >> 28;
+		value <<= 4;
+		digit &= 0xf;
+		if (digit < 10)
+			digit += '0';
+		else
+			digit += 'A'-10;
+		*out++ = digit;
+	}
+	*out = '\0';
+}
+
 /*
  * Convert and fold provided ATAGs into the provided FDT.
  *
@@ -180,6 +198,11 @@ int atags_to_fdt(void *atag_list, void *fdt, int total_space)
 					initrd_start);
 			setprop_cell(fdt, "/chosen", "linux,initrd-end",
 					initrd_start + initrd_size);
+		} else if (atag->hdr.tag == ATAG_SERIAL) {
+			char serno[16+2];
+			hex_str(serno, atag->u.serialnr.high);
+			hex_str(serno+8, atag->u.serialnr.low);
+			setprop_string(fdt, "/", "serial-number", serno);
 		}
 	}
 
diff --git a/arch/arm/common/sa1111.c b/arch/arm/common/sa1111.c
index a2c878769eaf..45412d21aa6b 100644
--- a/arch/arm/common/sa1111.c
+++ b/arch/arm/common/sa1111.c
@@ -1282,65 +1282,6 @@ int sa1111_get_audio_rate(struct sa1111_dev *sadev)
 }
 EXPORT_SYMBOL(sa1111_get_audio_rate);
 
-void sa1111_set_io_dir(struct sa1111_dev *sadev,
-		       unsigned int bits, unsigned int dir,
-		       unsigned int sleep_dir)
-{
-	struct sa1111 *sachip = sa1111_chip_driver(sadev);
-	unsigned long flags;
-	unsigned int val;
-	void __iomem *gpio = sachip->base + SA1111_GPIO;
-
-#define MODIFY_BITS(port, mask, dir)		\
-	if (mask) {				\
-		val = readl_relaxed(port);	\
-		val &= ~(mask);			\
-		val |= (dir) & (mask);		\
-		writel_relaxed(val, port);	\
-	}
-
-	spin_lock_irqsave(&sachip->lock, flags);
-	MODIFY_BITS(gpio + SA1111_GPIO_PADDR, bits & 15, dir);
-	MODIFY_BITS(gpio + SA1111_GPIO_PBDDR, (bits >> 8) & 255, dir >> 8);
-	MODIFY_BITS(gpio + SA1111_GPIO_PCDDR, (bits >> 16) & 255, dir >> 16);
-
-	MODIFY_BITS(gpio + SA1111_GPIO_PASDR, bits & 15, sleep_dir);
-	MODIFY_BITS(gpio + SA1111_GPIO_PBSDR, (bits >> 8) & 255, sleep_dir >> 8);
-	MODIFY_BITS(gpio + SA1111_GPIO_PCSDR, (bits >> 16) & 255, sleep_dir >> 16);
-	spin_unlock_irqrestore(&sachip->lock, flags);
-}
-EXPORT_SYMBOL(sa1111_set_io_dir);
-
-void sa1111_set_io(struct sa1111_dev *sadev, unsigned int bits, unsigned int v)
-{
-	struct sa1111 *sachip = sa1111_chip_driver(sadev);
-	unsigned long flags;
-	unsigned int val;
-	void __iomem *gpio = sachip->base + SA1111_GPIO;
-
-	spin_lock_irqsave(&sachip->lock, flags);
-	MODIFY_BITS(gpio + SA1111_GPIO_PADWR, bits & 15, v);
-	MODIFY_BITS(gpio + SA1111_GPIO_PBDWR, (bits >> 8) & 255, v >> 8);
-	MODIFY_BITS(gpio + SA1111_GPIO_PCDWR, (bits >> 16) & 255, v >> 16);
-	spin_unlock_irqrestore(&sachip->lock, flags);
-}
-EXPORT_SYMBOL(sa1111_set_io);
-
-void sa1111_set_sleep_io(struct sa1111_dev *sadev, unsigned int bits, unsigned int v)
-{
-	struct sa1111 *sachip = sa1111_chip_driver(sadev);
-	unsigned long flags;
-	unsigned int val;
-	void __iomem *gpio = sachip->base + SA1111_GPIO;
-
-	spin_lock_irqsave(&sachip->lock, flags);
-	MODIFY_BITS(gpio + SA1111_GPIO_PASSR, bits & 15, v);
-	MODIFY_BITS(gpio + SA1111_GPIO_PBSSR, (bits >> 8) & 255, v >> 8);
-	MODIFY_BITS(gpio + SA1111_GPIO_PCSSR, (bits >> 16) & 255, v >> 16);
-	spin_unlock_irqrestore(&sachip->lock, flags);
-}
-EXPORT_SYMBOL(sa1111_set_sleep_io);
-
 /*
  * Individual device operations.
  */
diff --git a/arch/arm/include/asm/assembler.h b/arch/arm/include/asm/assembler.h
index 88286dd483ff..28a48e0d4cca 100644
--- a/arch/arm/include/asm/assembler.h
+++ b/arch/arm/include/asm/assembler.h
@@ -243,13 +243,15 @@
 	.endm
 #endif
 
-#define USER(x...)				\
+#define USERL(l, x...)				\
 9999:	x;					\
 	.pushsection __ex_table,"a";		\
 	.align	3;				\
-	.long	9999b,9001f;			\
+	.long	9999b,l;			\
 	.popsection
 
+#define USER(x...)	USERL(9001f, x)
+
 #ifdef CONFIG_SMP
 #define ALT_SMP(instr...)					\
 9998:	instr
diff --git a/arch/arm/include/asm/hardware/sa1111.h b/arch/arm/include/asm/hardware/sa1111.h
index 798e520e8a49..d134b9a5ff94 100644
--- a/arch/arm/include/asm/hardware/sa1111.h
+++ b/arch/arm/include/asm/hardware/sa1111.h
@@ -433,10 +433,6 @@ int sa1111_check_dma_bug(dma_addr_t addr);
 int sa1111_driver_register(struct sa1111_driver *);
 void sa1111_driver_unregister(struct sa1111_driver *);
 
-void sa1111_set_io_dir(struct sa1111_dev *sadev, unsigned int bits, unsigned int dir, unsigned int sleep_dir);
-void sa1111_set_io(struct sa1111_dev *sadev, unsigned int bits, unsigned int v);
-void sa1111_set_sleep_io(struct sa1111_dev *sadev, unsigned int bits, unsigned int v);
-
 struct sa1111_platform_data {
 	int	irq_base;	/* base for cascaded on-chip IRQs */
 	unsigned disable_devs;
diff --git a/arch/arm/include/asm/uaccess.h b/arch/arm/include/asm/uaccess.h
index 27ed17ec45fe..42aa4a22803c 100644
--- a/arch/arm/include/asm/uaccess.h
+++ b/arch/arm/include/asm/uaccess.h
@@ -349,6 +349,13 @@ do {									\
 #define __get_user_asm_byte(x, addr, err)			\
 	__get_user_asm(x, addr, err, ldrb)
 
+#if __LINUX_ARM_ARCH__ >= 6
+
+#define __get_user_asm_half(x, addr, err)			\
+	__get_user_asm(x, addr, err, ldrh)
+
+#else
+
 #ifndef __ARMEB__
 #define __get_user_asm_half(x, __gu_addr, err)			\
 ({								\
@@ -367,6 +374,8 @@ do {									\
 })
 #endif
 
+#endif /* __LINUX_ARM_ARCH__ >= 6 */
+
 #define __get_user_asm_word(x, addr, err)			\
 	__get_user_asm(x, addr, err, ldr)
 #endif
@@ -442,6 +451,13 @@ do {									\
 #define __put_user_asm_byte(x, __pu_addr, err)			\
 	__put_user_asm(x, __pu_addr, err, strb)
 
+#if __LINUX_ARM_ARCH__ >= 6
+
+#define __put_user_asm_half(x, __pu_addr, err)			\
+	__put_user_asm(x, __pu_addr, err, strh)
+
+#else
+
 #ifndef __ARMEB__
 #define __put_user_asm_half(x, __pu_addr, err)			\
 ({								\
@@ -458,6 +474,8 @@ do {									\
 })
 #endif
 
+#endif /* __LINUX_ARM_ARCH__ >= 6 */
+
 #define __put_user_asm_word(x, __pu_addr, err)			\
 	__put_user_asm(x, __pu_addr, err, str)
 
diff --git a/arch/arm/kernel/head.S b/arch/arm/kernel/head.S
index 6b1148cafffd..4485d0404514 100644
--- a/arch/arm/kernel/head.S
+++ b/arch/arm/kernel/head.S
@@ -398,7 +398,7 @@ ENTRY(secondary_startup)
 	ldmia	r4, {r5, r7, r12}		@ address to jump to after
 	sub	lr, r4, r5			@ mmu has been enabled
 	add	r3, r7, lr
-	ldrd	r4, [r3, #0]			@ get secondary_data.pgdir
+	ldrd	r4, r5, [r3, #0]		@ get secondary_data.pgdir
 ARM_BE8(eor	r4, r4, r5)			@ Swap r5 and r4 in BE:
 ARM_BE8(eor	r5, r4, r5)			@ it can be done in 3 steps
 ARM_BE8(eor	r4, r4, r5)			@ without using a temp reg.
diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
index 12a6172263c0..3bf82232b1be 100644
--- a/arch/arm/kernel/smp.c
+++ b/arch/arm/kernel/smp.c
@@ -724,6 +724,21 @@ void smp_send_stop(void)
 		pr_warn("SMP: failed to stop secondary CPUs\n");
 }
 
+/* In case panic() and panic() called at the same time on CPU1 and CPU2,
+ * and CPU 1 calls panic_smp_self_stop() before crash_smp_send_stop()
+ * CPU1 can't receive the ipi irqs from CPU2, CPU1 will be always online,
+ * kdump fails. So split out the panic_smp_self_stop() and add
+ * set_cpu_online(smp_processor_id(), false).
+ */
+void panic_smp_self_stop(void)
+{
+	pr_debug("CPU %u will stop doing anything useful since another CPU has paniced\n",
+	         smp_processor_id());
+	set_cpu_online(smp_processor_id(), false);
+	while (1)
+		cpu_relax();
+}
+
 /*
  * not supported here
  */
diff --git a/arch/arm/lib/copy_from_user.S b/arch/arm/lib/copy_from_user.S
index 6709a8d33963..0d4c189c7f4f 100644
--- a/arch/arm/lib/copy_from_user.S
+++ b/arch/arm/lib/copy_from_user.S
@@ -34,12 +34,13 @@
  *	Number of bytes NOT copied.
  */
 
+#ifdef CONFIG_CPU_USE_DOMAINS
+
 #ifndef CONFIG_THUMB2_KERNEL
 #define LDR1W_SHIFT	0
 #else
 #define LDR1W_SHIFT	1
 #endif
-#define STR1W_SHIFT	0
 
 	.macro ldr1w ptr reg abort
 	ldrusr	\reg, \ptr, 4, abort=\abort
@@ -57,10 +58,30 @@
 	ldr4w \ptr, \reg5, \reg6, \reg7, \reg8, \abort
 	.endm
 
+#else
+
+#define LDR1W_SHIFT	0
+
+	.macro ldr1w ptr reg abort
+	USERL(\abort, W(ldr) \reg, [\ptr], #4)
+	.endm
+
+	.macro ldr4w ptr reg1 reg2 reg3 reg4 abort
+	USERL(\abort, ldmia \ptr!, {\reg1, \reg2, \reg3, \reg4})
+	.endm
+
+	.macro ldr8w ptr reg1 reg2 reg3 reg4 reg5 reg6 reg7 reg8 abort
+	USERL(\abort, ldmia \ptr!, {\reg1, \reg2, \reg3, \reg4, \reg5, \reg6, \reg7, \reg8})
+	.endm
+
+#endif /* CONFIG_CPU_USE_DOMAINS */
+
 	.macro ldr1b ptr reg cond=al abort
 	ldrusr	\reg, \ptr, 1, \cond, abort=\abort
 	.endm
 
+#define STR1W_SHIFT	0
+
 	.macro str1w ptr reg abort
 	W(str) \reg, [\ptr], #4
 	.endm
diff --git a/arch/arm/lib/copy_to_user.S b/arch/arm/lib/copy_to_user.S
index 970abe521197..97a6ff4b7e3c 100644
--- a/arch/arm/lib/copy_to_user.S
+++ b/arch/arm/lib/copy_to_user.S
@@ -35,11 +35,6 @@
  */
 
 #define LDR1W_SHIFT	0
-#ifndef CONFIG_THUMB2_KERNEL
-#define STR1W_SHIFT	0
-#else
-#define STR1W_SHIFT	1
-#endif
 
 	.macro ldr1w ptr reg abort
 	W(ldr) \reg, [\ptr], #4
@@ -57,6 +52,14 @@
 	ldr\cond\()b \reg, [\ptr], #1
 	.endm
 
+#ifdef CONFIG_CPU_USE_DOMAINS
+
+#ifndef CONFIG_THUMB2_KERNEL
+#define STR1W_SHIFT	0
+#else
+#define STR1W_SHIFT	1
+#endif
+
 	.macro str1w ptr reg abort
 	strusr	\reg, \ptr, 4, abort=\abort
 	.endm
@@ -72,6 +75,20 @@
 	str1w \ptr, \reg8, \abort
 	.endm
 
+#else
+
+#define STR1W_SHIFT	0
+
+	.macro str1w ptr reg abort
+	USERL(\abort, W(str) \reg, [\ptr], #4)
+	.endm
+
+	.macro str8w ptr reg1 reg2 reg3 reg4 reg5 reg6 reg7 reg8 abort
+	USERL(\abort, stmia \ptr!, {\reg1, \reg2, \reg3, \reg4, \reg5, \reg6, \reg7, \reg8})
+	.endm
+
+#endif /* CONFIG_CPU_USE_DOMAINS */
+
 	.macro str1b ptr reg cond=al abort
 	strusr	\reg, \ptr, 1, \cond, abort=\abort
 	.endm
diff --git a/arch/arm/lib/getuser.S b/arch/arm/lib/getuser.S
index 746e7801dcdf..b2e4bc3a635e 100644
--- a/arch/arm/lib/getuser.S
+++ b/arch/arm/lib/getuser.S
@@ -42,6 +42,12 @@ _ASM_NOKPROBE(__get_user_1)
 
 ENTRY(__get_user_2)
 	check_uaccess r0, 2, r1, r2, __get_user_bad
+#if __LINUX_ARM_ARCH__ >= 6
+
+2: TUSER(ldrh)	r2, [r0]
+
+#else
+
 #ifdef CONFIG_CPU_USE_DOMAINS
 rb	.req	ip
 2:	ldrbt	r2, [r0], #1
@@ -56,6 +62,9 @@ rb	.req	r0
 #else
 	orr	r2, rb, r2, lsl #8
 #endif
+
+#endif /* __LINUX_ARM_ARCH__ >= 6 */
+
 	mov	r0, #0
 	ret	lr
 ENDPROC(__get_user_2)
@@ -145,7 +154,9 @@ _ASM_NOKPROBE(__get_user_bad8)
 .pushsection __ex_table, "a"
 	.long	1b, __get_user_bad
 	.long	2b, __get_user_bad
+#if __LINUX_ARM_ARCH__ < 6
 	.long	3b, __get_user_bad
+#endif
 	.long	4b, __get_user_bad
 	.long	5b, __get_user_bad8
 	.long	6b, __get_user_bad8
diff --git a/arch/arm/lib/putuser.S b/arch/arm/lib/putuser.S
index 38d660d3705f..515eeaa9975c 100644
--- a/arch/arm/lib/putuser.S
+++ b/arch/arm/lib/putuser.S
@@ -41,16 +41,13 @@ ENDPROC(__put_user_1)
 
 ENTRY(__put_user_2)
 	check_uaccess r0, 2, r1, ip, __put_user_bad
-	mov	ip, r2, lsr #8
-#ifdef CONFIG_THUMB2_KERNEL
-#ifndef __ARMEB__
-2: TUSER(strb)	r2, [r0]
-3: TUSER(strb)	ip, [r0, #1]
+#if __LINUX_ARM_ARCH__ >= 6
+
+2: TUSER(strh)	r2, [r0]
+
 #else
-2: TUSER(strb)	ip, [r0]
-3: TUSER(strb)	r2, [r0, #1]
-#endif
-#else	/* !CONFIG_THUMB2_KERNEL */
+
+	mov	ip, r2, lsr #8
 #ifndef __ARMEB__
 2: TUSER(strb)	r2, [r0], #1
 3: TUSER(strb)	ip, [r0]
@@ -58,7 +55,8 @@ ENTRY(__put_user_2)
 2: TUSER(strb)	ip, [r0], #1
 3: TUSER(strb)	r2, [r0]
 #endif
-#endif	/* CONFIG_THUMB2_KERNEL */
+
+#endif /* __LINUX_ARM_ARCH__ >= 6 */
 	mov	r0, #0
 	ret	lr
 ENDPROC(__put_user_2)
@@ -91,7 +89,9 @@ ENDPROC(__put_user_bad)
 .pushsection __ex_table, "a"
 	.long	1b, __put_user_bad
 	.long	2b, __put_user_bad
+#if __LINUX_ARM_ARCH__ < 6
 	.long	3b, __put_user_bad
+#endif
 	.long	4b, __put_user_bad
 	.long	5b, __put_user_bad
 	.long	6b, __put_user_bad
diff --git a/arch/arm/mach-omap2/Kconfig b/arch/arm/mach-omap2/Kconfig
index 9f27b486a536..5e33d1a90664 100644
--- a/arch/arm/mach-omap2/Kconfig
+++ b/arch/arm/mach-omap2/Kconfig
@@ -223,7 +223,6 @@ config MACH_NOKIA_N8X0
 config OMAP3_SDRC_AC_TIMING
 	bool "Enable SDRC AC timing register changes"
 	depends on ARCH_OMAP3
-	default n
 	help
 	  If you know that none of your system initiators will attempt to
 	  access SDRAM during CORE DVFS, select Y here.  This should boost
diff --git a/arch/arm/mach-omap2/omap-smp.c b/arch/arm/mach-omap2/omap-smp.c
index 1c73694c871a..10e070368f64 100644
--- a/arch/arm/mach-omap2/omap-smp.c
+++ b/arch/arm/mach-omap2/omap-smp.c
@@ -69,8 +69,6 @@ static const struct omap_smp_config omap5_cfg __initconst = {
 	.startup_addr = omap5_secondary_startup,
 };
 
-static DEFINE_SPINLOCK(boot_lock);
-
 void __iomem *omap4_get_scu_base(void)
 {
 	return cfg.scu_base;
@@ -173,12 +171,6 @@ static void omap4_secondary_init(unsigned int cpu)
 		/* Enable ACR to allow for ICUALLU workaround */
 		omap5_secondary_harden_predictor();
 	}
-
-	/*
-	 * Synchronise with the boot thread.
-	 */
-	spin_lock(&boot_lock);
-	spin_unlock(&boot_lock);
 }
 
 static int omap4_boot_secondary(unsigned int cpu, struct task_struct *idle)
@@ -188,12 +180,6 @@ static int omap4_boot_secondary(unsigned int cpu, struct task_struct *idle)
 	static struct powerdomain *cpu1_pwrdm;
 
 	/*
-	 * Set synchronisation state between this boot processor
-	 * and the secondary one
-	 */
-	spin_lock(&boot_lock);
-
-	/*
 	 * Update the AuxCoreBoot0 with boot state for secondary core.
 	 * omap4_secondary_startup() routine will hold the secondary core till
 	 * the AuxCoreBoot1 register is updated with cpu state
@@ -266,12 +252,6 @@ static int omap4_boot_secondary(unsigned int cpu, struct task_struct *idle)
 
 	arch_send_wakeup_ipi_mask(cpumask_of(cpu));
 
-	/*
-	 * Now the secondary core is starting up let it run its
-	 * calibrations, then wait for it to finish
-	 */
-	spin_unlock(&boot_lock);
-
 	return 0;
 }
 
diff --git a/arch/arm/mach-pxa/Kconfig b/arch/arm/mach-pxa/Kconfig
index b185794549be..dc8e4f4b7ade 100644
--- a/arch/arm/mach-pxa/Kconfig
+++ b/arch/arm/mach-pxa/Kconfig
@@ -46,6 +46,7 @@ config ARCH_LUBBOCK
 
 config MACH_MAINSTONE
 	bool "Intel HCDDBBVA0 Development Platform (aka Mainstone)"
+	select GPIO_REG
 	select PXA27x
 
 config MACH_ZYLONITE
@@ -551,7 +552,6 @@ config TOSA_BT
 config TOSA_USE_EXT_KEYCODES
 	bool "Tosa keyboard: use extended keycodes"
 	depends on MACH_TOSA
-	default n
 	help
 	  Say Y here to enable the tosa keyboard driver to generate extended
 	  (>= 127) keycodes. Be aware, that they can't be correctly interpreted
diff --git a/arch/arm/mach-pxa/include/mach/mainstone.h b/arch/arm/mach-pxa/include/mach/mainstone.h
index e82a7d31104e..474041a83d80 100644
--- a/arch/arm/mach-pxa/include/mach/mainstone.h
+++ b/arch/arm/mach-pxa/include/mach/mainstone.h
@@ -119,6 +119,10 @@
 #define MST_PCMCIA_PWR_VCC_33   0x8	   /* voltage VCC = 3.3V */
 #define MST_PCMCIA_PWR_VCC_50   0x4	   /* voltage VCC = 5.0V */
 
+#define MST_PCMCIA_INPUTS \
+	(MST_PCMCIA_nIRQ | MST_PCMCIA_nSPKR_BVD2 | MST_PCMCIA_nSTSCHG_BVD1 | \
+	 MST_PCMCIA_nVS2 | MST_PCMCIA_nVS1 | MST_PCMCIA_nCD)
+
 /* board specific IRQs */
 #define MAINSTONE_NR_IRQS	IRQ_BOARD_START
 
diff --git a/arch/arm/mach-pxa/lubbock.c b/arch/arm/mach-pxa/lubbock.c
index c576e8462043..a1391e113ef4 100644
--- a/arch/arm/mach-pxa/lubbock.c
+++ b/arch/arm/mach-pxa/lubbock.c
@@ -136,10 +136,26 @@ static struct pxa2xx_udc_mach_info udc_info __initdata = {
 	// no D+ pullup; lubbock can't connect/disconnect in software
 };
 
+/* GPIOs for SA1111 PCMCIA */
+static struct gpiod_lookup_table sa1111_pcmcia_gpio_table = {
+	.dev_id = "1800",
+	.table = {
+		{ "sa1111", 0, "a0vpp", GPIO_ACTIVE_HIGH },
+		{ "sa1111", 1, "a1vpp", GPIO_ACTIVE_HIGH },
+		{ "sa1111", 2, "a0vcc", GPIO_ACTIVE_HIGH },
+		{ "sa1111", 3, "a1vcc", GPIO_ACTIVE_HIGH },
+		{ "lubbock", 14, "b0vcc", GPIO_ACTIVE_HIGH },
+		{ "lubbock", 15, "b1vcc", GPIO_ACTIVE_HIGH },
+		{ },
+	},
+};
+
 static void lubbock_init_pcmcia(void)
 {
 	struct clk *clk;
 
+	gpiod_add_lookup_table(&sa1111_pcmcia_gpio_table);
+
 	/* Add an alias for the SA1111 PCMCIA clock */
 	clk = clk_get_sys("pxa2xx-pcmcia", NULL);
 	if (!IS_ERR(clk)) {
diff --git a/arch/arm/mach-pxa/mainstone.c b/arch/arm/mach-pxa/mainstone.c
index 9e39fc2ad2d9..d6e17d407ac0 100644
--- a/arch/arm/mach-pxa/mainstone.c
+++ b