Merge branches 'fixes', 'misc' and 'sa1111-for-next' into for-next

arch/arm/Kconfig

@@ -2,6 +2,7 @@ config ARM
 	bool
 	default y
 	select ARCH_CLOCKSOURCE_DATA
+	select ARCH_DISCARD_MEMBLOCK if !HAVE_ARCH_PFN_VALID
 	select ARCH_HAS_DEBUG_VIRTUAL
 	select ARCH_HAS_DEVMEM_IS_ALLOWED
 	select ARCH_HAS_ELF_RANDOMIZE

arch/arm/boot/compressed/Makefile

@@ -116,8 +116,11 @@ ccflags-y := -fpic -mno-single-pic-base -fno-builtin -I$(obj)
 asflags-y := -DZIMAGE
 
 # Supply kernel BSS size to the decompressor via a linker symbol.
-KBSS_SZ = $(shell $(CROSS_COMPILE)size $(obj)/../../../../vmlinux | \
-		awk 'END{print $$3}')
+KBSS_SZ = $(shell $(CROSS_COMPILE)nm $(obj)/../../../../vmlinux | \
+		perl -e 'while (<>) { \
+			$$bss_start=hex($$1) if /^([[:xdigit:]]+) B __bss_start$$/; \
+			$$bss_end=hex($$1) if /^([[:xdigit:]]+) B __bss_stop$$/; \
+		}; printf "%d\n", $$bss_end - $$bss_start;')
 LDFLAGS_vmlinux = --defsym _kernel_bss_size=$(KBSS_SZ)
 # Supply ZRELADDR to the decompressor via a linker symbol.
 ifneq ($(CONFIG_AUTO_ZRELADDR),y)

arch/arm/boot/compressed/head.S

@@ -143,6 +143,8 @@ start:
 		.word	_magic_start	@ absolute load/run zImage address
 		.word	_magic_end	@ zImage end address
 		.word	0x04030201	@ endianness flag
+		.word	0x45454545	@ another magic number to indicate
+		.word	_magic_table	@ additional data table
 
 		__EFI_HEADER
 1:

arch/arm/boot/compressed/vmlinux.lds.S

@@ -44,12 +44,22 @@ SECTIONS
     *(.glue_7t)
     *(.glue_7)
   }
+  .table : ALIGN(4) {
+    _table_start = .;
+    LONG(ZIMAGE_MAGIC(2))
+    LONG(ZIMAGE_MAGIC(0x5a534c4b))
+    LONG(ZIMAGE_MAGIC(__piggy_size_addr - _start))
+    LONG(ZIMAGE_MAGIC(_kernel_bss_size))
+    LONG(0)
+    _table_end = .;
+  }
   .rodata : {
     *(.rodata)
     *(.rodata.*)
   }
   .piggydata : {
     *(.piggydata)
+    __piggy_size_addr = . - 4;
   }
 
   . = ALIGN(4);
@@ -97,6 +107,7 @@ SECTIONS
   _magic_sig = ZIMAGE_MAGIC(0x016f2818);
   _magic_start = ZIMAGE_MAGIC(_start);
   _magic_end = ZIMAGE_MAGIC(_edata);
+  _magic_table = ZIMAGE_MAGIC(_table_start - _start);
 
   . = BSS_START;
   __bss_start = .;

arch/arm/include/asm/dma-mapping.h

@@ -189,13 +189,6 @@ extern int arm_dma_mmap(struct device *dev, struct vm_area_struct *vma,
 			void *cpu_addr, dma_addr_t dma_addr, size_t size,
 			unsigned long attrs);
 
-/*
- * This can be called during early boot to increase the size of the atomic
- * coherent DMA pool above the default value of 256KiB. It must be called
- * before postcore_initcall.
- */
-extern void __init init_dma_coherent_pool_size(unsigned long size);
-
 /*
  * For SA-1111, IXP425, and ADI systems  the dma-mapping functions are "magic"
  * and utilize bounce buffers as needed to work around limited DMA windows.

arch/arm/include/asm/highmem.h

@@ -18,7 +18,6 @@
 	} while (0)
 
 extern pte_t *pkmap_page_table;
-extern pte_t *fixmap_page_table;
 
 extern void *kmap_high(struct page *page);
 extern void kunmap_high(struct page *page);

arch/arm/kernel/atags_parse.c

@@ -196,11 +196,8 @@ setup_machine_tags(phys_addr_t __atags_pointer, unsigned int machine_nr)
 			break;
 		}
 
-	if (!mdesc) {
-		early_print("\nError: unrecognized/unsupported machine ID"
-			    " (r1 = 0x%08x).\n\n", machine_nr);
-		dump_machine_table(); /* does not return */
-	}
+	if (!mdesc)
+		return NULL;
 
 	if (__atags_pointer)
 		tags = phys_to_virt(__atags_pointer);

arch/arm/kernel/debug.S

@@ -55,7 +55,9 @@ ENDPROC(printhex4)
 
 ENTRY(printhex2)
 		mov	r1, #2
-printhex:	adr	r2, hexbuf
+printhex:	adr	r2, hexbuf_rel
+		ldr	r3, [r2]
+		add	r2, r2, r3
 		add	r3, r2, r1
 		mov	r1, #0
 		strb	r1, [r3]
@@ -71,7 +73,11 @@ printhex:	adr	r2, hexbuf
 		b	printascii
 ENDPROC(printhex2)
 
-hexbuf:		.space 16
+		.pushsection .bss
+hexbuf_addr:	.space 16
+		.popsection
+		.align
+hexbuf_rel:	.long	hexbuf_addr - .
 
 		.ltorg
 
@@ -79,25 +85,28 @@ hexbuf:		.space 16
 
 ENTRY(printascii)
 		addruart_current r3, r1, r2
-		b	2f
-1:		waituart r2, r3
-		senduart r1, r3
-		busyuart r2, r3
-		teq	r1, #'\n'
-		moveq	r1, #'\r'
-		beq	1b
-2:		teq	r0, #0
+1:		teq	r0, #0
 		ldrneb	r1, [r0], #1
 		teqne	r1, #0
-		bne	1b
-		ret	lr
+		reteq	lr
+2:		teq     r1, #'\n'
+		bne	3f
+		mov	r1, #'\r'
+		waituart r2, r3
+		senduart r1, r3
+		busyuart r2, r3
+		mov	r1, #'\n'
+3:		waituart r2, r3
+		senduart r1, r3
+		busyuart r2, r3
+		b	1b
 ENDPROC(printascii)
 
 ENTRY(printch)
 		addruart_current r3, r1, r2
 		mov	r1, r0
 		mov	r0, #0
-		b	1b
+		b	2b
 ENDPROC(printch)
 
 #ifdef CONFIG_MMU
@@ -124,7 +133,9 @@ ENTRY(printascii)
 ENDPROC(printascii)
 
 ENTRY(printch)
-		adr	r1, hexbuf
+		adr	r1, hexbuf_rel
+		ldr	r2, [r1]
+		add	r1, r1, r2
 		strb	r0, [r1]
 		mov	r0, #0x03		@ SYS_WRITEC
 	ARM(	svc	#0x123456	)

arch/arm/kernel/early_printk.c

@@ -11,16 +11,20 @@
 #include <linux/kernel.h>
 #include <linux/console.h>
 #include <linux/init.h>
+#include <linux/string.h>
 
-extern void printch(int);
+extern void printascii(const char *);
 
 static void early_write(const char *s, unsigned n)
 {
-	while (n-- > 0) {
-		if (*s == '\n')
-			printch('\r');
-		printch(*s);
-		s++;
+	char buf[128];
+	while (n) {
+		unsigned l = min(n, sizeof(buf)-1);
+		memcpy(buf, s, l);
+		buf[l] = 0;
+		s += l;
+		n -= l;
+		printascii(buf);
 	}
 }
 

arch/arm/kernel/entry-common.S

@@ -394,17 +394,8 @@ ENDPROC(sys_fstatfs64_wrapper)
  * offset, we return EINVAL.
  */
 sys_mmap2:
-#if PAGE_SHIFT > 12
-		tst	r5, #PGOFF_MASK
-		moveq	r5, r5, lsr #PAGE_SHIFT - 12
-		streq	r5, [sp, #4]
-		beq	sys_mmap_pgoff
-		mov	r0, #-EINVAL
-		ret	lr
-#else
 		str	r5, [sp, #4]
 		b	sys_mmap_pgoff
-#endif
 ENDPROC(sys_mmap2)
 
 #ifdef CONFIG_OABI_COMPAT

arch/arm/kernel/setup.c

@@ -1069,6 +1069,16 @@ void __init setup_arch(char **cmdline_p)
 	mdesc = setup_machine_fdt(__atags_pointer);
 	if (!mdesc)
 		mdesc = setup_machine_tags(__atags_pointer, __machine_arch_type);
+	if (!mdesc) {
+		early_print("\nError: invalid dtb and unrecognized/unsupported machine ID\n");
+		early_print("  r1=0x%08x, r2=0x%08x\n", __machine_arch_type,
+			    __atags_pointer);
+		if (__atags_pointer)
+			early_print("  r2[]=%*ph\n", 16,
+				    phys_to_virt(__atags_pointer));
+		dump_machine_table();
+	}
+
 	machine_desc = mdesc;
 	machine_name = mdesc->name;
 	dump_stack_set_arch_desc("%s", mdesc->name);

arch/arm/mm/dma-mapping.c

@@ -382,9 +382,9 @@ static void __dma_free_remap(void *cpu_addr, size_t size)
 }
 
 #define DEFAULT_DMA_COHERENT_POOL_SIZE	SZ_256K
-static struct gen_pool *atomic_pool;
+static struct gen_pool *atomic_pool __ro_after_init;
 
-static size_t atomic_pool_size = DEFAULT_DMA_COHERENT_POOL_SIZE;
+static size_t atomic_pool_size __initdata = DEFAULT_DMA_COHERENT_POOL_SIZE;
 
 static int __init early_coherent_pool(char *p)
 {
@@ -393,21 +393,6 @@ static int __init early_coherent_pool(char *p)
 }
 early_param("coherent_pool", early_coherent_pool);
 
-void __init init_dma_coherent_pool_size(unsigned long size)
-{
-	/*
-	 * Catch any attempt to set the pool size too late.
-	 */
-	BUG_ON(atomic_pool);
-
-	/*
-	 * Set architecture specific coherent pool size only if
-	 * it has not been changed by kernel command line parameter.
-	 */
-	if (atomic_pool_size == DEFAULT_DMA_COHERENT_POOL_SIZE)
-		atomic_pool_size = size;
-}
-
 /*
  * Initialise the coherent pool for atomic allocations.
  */
@@ -443,7 +428,7 @@ static int __init atomic_pool_init(void)
 
 		gen_pool_set_algo(atomic_pool,
 				gen_pool_first_fit_order_align,
-				(void *)PAGE_SHIFT);
+				NULL);
 		pr_info("DMA: preallocated %zu KiB pool for atomic coherent allocations\n",
 		       atomic_pool_size / 1024);
 		return 0;

arch/arm/mm/init.c

@@ -580,16 +580,6 @@ void __init mem_init(void)
 	BUILD_BUG_ON(PKMAP_BASE + LAST_PKMAP * PAGE_SIZE > PAGE_OFFSET);
 	BUG_ON(PKMAP_BASE + LAST_PKMAP * PAGE_SIZE	> PAGE_OFFSET);
 #endif
-
-	if (PAGE_SIZE >= 16384 && get_num_physpages() <= 128) {
-		extern int sysctl_overcommit_memory;
-		/*
-		 * On a machine this small we won't get
-		 * anywhere without overcommit, so turn
-		 * it on by default.
-		 */
-		sysctl_overcommit_memory = OVERCOMMIT_ALWAYS;
-	}
 }
 
 #ifdef CONFIG_STRICT_KERNEL_RWX

drivers/pcmcia/sa1111_generic.c

@@ -63,11 +63,12 @@
 #define IDX_IRQ_S1_READY_NINT	(3)
 #define IDX_IRQ_S1_CD_VALID	(4)
 #define IDX_IRQ_S1_BVD1_STSCHG	(5)
+#define NUM_IRQS		(6)
 
 void sa1111_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state)
 {
 	struct sa1111_pcmcia_socket *s = to_skt(skt);
-	unsigned long status = sa1111_readl(s->dev->mapbase + PCSR);
+	u32 status = readl_relaxed(s->dev->mapbase + PCSR);
 
 	switch (skt->nr) {
 	case 0:
@@ -95,7 +96,7 @@ void sa1111_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_sta
 int sa1111_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state)
 {
 	struct sa1111_pcmcia_socket *s = to_skt(skt);
-	unsigned int pccr_skt_mask, pccr_set_mask, val;
+	u32 pccr_skt_mask, pccr_set_mask, val;
 	unsigned long flags;
 
 	switch (skt->nr) {
@@ -123,10 +124,10 @@ int sa1111_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_s
 		pccr_set_mask |= PCCR_S0_FLT|PCCR_S1_FLT;
 
 	local_irq_save(flags);
-	val = sa1111_readl(s->dev->mapbase + PCCR);
+	val = readl_relaxed(s->dev->mapbase + PCCR);
 	val &= ~pccr_skt_mask;
 	val |= pccr_set_mask & pccr_skt_mask;
-	sa1111_writel(val, s->dev->mapbase + PCCR);
+	writel_relaxed(val, s->dev->mapbase + PCCR);
 	local_irq_restore(flags);
 
 	return 0;
@@ -137,12 +138,18 @@ int sa1111_pcmcia_add(struct sa1111_dev *dev, struct pcmcia_low_level *ops,
 {
 	struct sa1111_pcmcia_socket *s;
 	struct clk *clk;
-	int i, ret = 0;
+	int i, ret = 0, irqs[NUM_IRQS];
 
 	clk = devm_clk_get(&dev->dev, NULL);
 	if (IS_ERR(clk))
 		return PTR_ERR(clk);
 
+	for (i = 0; i < NUM_IRQS; i++) {
+		irqs[i] = sa1111_get_irq(dev, i);
+		if (irqs[i] <= 0)
+			return irqs[i] ? : -ENXIO;
+	}
+
 	ops->socket_state = sa1111_pcmcia_socket_state;
 
 	for (i = 0; i < ops->nr; i++) {
@@ -156,16 +163,16 @@ int sa1111_pcmcia_add(struct sa1111_dev *dev, struct pcmcia_low_level *ops,
 		soc_pcmcia_init_one(&s->soc, ops, &dev->dev);
 		s->dev = dev;
 		if (s->soc.nr) {
-			s->soc.socket.pci_irq = dev->irq[IDX_IRQ_S1_READY_NINT];
-			s->soc.stat[SOC_STAT_CD].irq = dev->irq[IDX_IRQ_S1_CD_VALID];
+			s->soc.socket.pci_irq = irqs[IDX_IRQ_S1_READY_NINT];
+			s->soc.stat[SOC_STAT_CD].irq = irqs[IDX_IRQ_S1_CD_VALID];
 			s->soc.stat[SOC_STAT_CD].name = "SA1111 CF card detect";
-			s->soc.stat[SOC_STAT_BVD1].irq = dev->irq[IDX_IRQ_S1_BVD1_STSCHG];
+			s->soc.stat[SOC_STAT_BVD1].irq = irqs[IDX_IRQ_S1_BVD1_STSCHG];
 			s->soc.stat[SOC_STAT_BVD1].name = "SA1111 CF BVD1";
 		} else {
-			s->soc.socket.pci_irq = dev->irq[IDX_IRQ_S0_READY_NINT];
-			s->soc.stat[SOC_STAT_CD].irq = dev->irq[IDX_IRQ_S0_CD_VALID];
+			s->soc.socket.pci_irq = irqs[IDX_IRQ_S0_READY_NINT];
+			s->soc.stat[SOC_STAT_CD].irq = irqs[IDX_IRQ_S0_CD_VALID];
 			s->soc.stat[SOC_STAT_CD].name = "SA1111 PCMCIA card detect";
-			s->soc.stat[SOC_STAT_BVD1].irq = dev->irq[IDX_IRQ_S0_BVD1_STSCHG];
+			s->soc.stat[SOC_STAT_BVD1].irq = irqs[IDX_IRQ_S0_BVD1_STSCHG];
 			s->soc.stat[SOC_STAT_BVD1].name = "SA1111 PCMCIA BVD1";
 		}
 
@@ -201,8 +208,8 @@ static int pcmcia_probe(struct sa1111_dev *dev)
 	/*
 	 * Initialise the suspend state.
 	 */
-	sa1111_writel(PCSSR_S0_SLEEP | PCSSR_S1_SLEEP, base + PCSSR);
-	sa1111_writel(PCCR_S0_FLT | PCCR_S1_FLT, base + PCCR);
+	writel_relaxed(PCSSR_S0_SLEEP | PCSSR_S1_SLEEP, base + PCSSR);
+	writel_relaxed(PCCR_S0_FLT | PCCR_S1_FLT, base + PCCR);
 
 	ret = -ENODEV;
 #ifdef CONFIG_SA1100_BADGE4