Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm

* 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm: (272 commits)
  Fix soc_common PCMCIA configuration
  ARM: 5827/1: SA1100: h3100/h3600: emit messages on failed gpio_request
  ARM: 5826/1: SA1100: h3100/h3600: always build htc-egpio driver
  ARM: 5825/1: SA1100: h3600: update defconfig
  ARM: 5824/1: SA1100: reuse h3600 PCMCIA driver on h3100
  ARM: 5823/1: SA1100: h3100/h3600: add support for gpio-keys
  ARM: 5822/1: SA1100: h3100/h3600: clean up #includes
  ARM: 5821/1: SA1100: h3100/h3600: revise copyright boilerplates
  ARM: 5820/1: SA1100: h3100/h3600: split h3600.c
  ARM: 5819/1: SA1100: h3100/h3600: merge h3600.h and h3600_gpio.h into h3xxx.h
  ARM: 5818/1: SA1100: h3100/h3600: drop old GPIO definitions
  ARM: 5817/1: SA1100: h3100/h3600: configure all unused gpios as inputs
  ARM: 5816/1: SA1100: h3600: remove IRQ_GPIO_* definitions
  ARM: 5815/1: SA1100: h3100/h3600: remove now unused assign_h3600_egpio handlers
  ARM: 5814/1: SA1100: h3100/h3600: convert all users of assign_h3600_egpio to gpiolib
  ARM: 5813/1: SA1100: h3100/h3600: add htc-egpio driver
  ARM: 5812/1: SA1100: h3100/h3600: separate machine-specific LCD helpers
  ARM: 5811/2: pcmcia: convert sa1100_h3600 driver to gpiolib
  ARM: 5799/1: SA1100: h3600: stop setting direction for LCD pins
  ARM: 5798/1: SA1100: h3600: remove unused cruft from h3600.h
  ...

9 files changed, 275 insertions, 35 deletions

diff --git a/arch/arm/include/asm/cacheflush.h b/arch/arm/include/asm/cacheflush.h
index 3d0cdd21b882..9fd6d3ab68c0 100644
--- a/arch/arm/include/asm/cacheflush.h
+++ b/arch/arm/include/asm/cacheflush.h
@@ -331,15 +331,15 @@ static inline void outer_flush_range(unsigned long start, unsigned long end)
  * Convert calls to our calling convention.
  */
 #define flush_cache_all()               __cpuc_flush_kern_all()
-#ifndef CONFIG_CPU_CACHE_VIPT
-static inline void flush_cache_mm(struct mm_struct *mm)
+
+static inline void vivt_flush_cache_mm(struct mm_struct *mm)
 {
         if (cpumask_test_cpu(smp_processor_id(), mm_cpumask(mm)))
                 __cpuc_flush_user_all();
 }
 
 static inline void
-flush_cache_range(struct vm_area_struct *vma, unsigned long start, unsigned long end)
+vivt_flush_cache_range(struct vm_area_struct *vma, unsigned long start, unsigned long end)
 {
         if (cpumask_test_cpu(smp_processor_id(), mm_cpumask(vma->vm_mm)))
                 __cpuc_flush_user_range(start & PAGE_MASK, PAGE_ALIGN(end),
@@ -347,7 +347,7 @@ flush_cache_range(struct vm_area_struct *vma, unsigned long start, unsigned long
 }
 
 static inline void
-flush_cache_page(struct vm_area_struct *vma, unsigned long user_addr, unsigned long pfn)
+vivt_flush_cache_page(struct vm_area_struct *vma, unsigned long user_addr, unsigned long pfn)
 {
         if (cpumask_test_cpu(smp_processor_id(), mm_cpumask(vma->vm_mm))) {
                 unsigned long addr = user_addr & PAGE_MASK;
@@ -356,7 +356,7 @@ flush_cache_page(struct vm_area_struct *vma, unsigned long user_addr, unsigned l
 }
 
 static inline void
-flush_ptrace_access(struct vm_area_struct *vma, struct page *page,
+vivt_flush_ptrace_access(struct vm_area_struct *vma, struct page *page,
                          unsigned long uaddr, void *kaddr,
                          unsigned long len, int write)
 {
@@ -365,6 +365,16 @@ flush_ptrace_access(struct vm_area_struct *vma, struct page *page,
                 __cpuc_coherent_kern_range(addr, addr + len);
         }
 }
+
+#ifndef CONFIG_CPU_CACHE_VIPT
+#define flush_cache_mm(mm) \
+                vivt_flush_cache_mm(mm)
+#define flush_cache_range(vma,start,end) \
+                vivt_flush_cache_range(vma,start,end)
+#define flush_cache_page(vma,addr,pfn) \
+                vivt_flush_cache_page(vma,addr,pfn)
+#define flush_ptrace_access(vma,page,ua,ka,len,write) \
+                vivt_flush_ptrace_access(vma,page,ua,ka,len,write)
 #else
 extern void flush_cache_mm(struct mm_struct *mm);
 extern void flush_cache_range(struct vm_area_struct *vma, unsigned long start, unsigned long end);
@@ -410,8 +420,6 @@ extern void flush_ptrace_access(struct vm_area_struct *vma, struct page *page,
  */
 extern void flush_dcache_page(struct page *);
 
-extern void __flush_dcache_page(struct address_space *mapping, struct page *page);
-
 static inline void __flush_icache_all(void)
 {
 #ifdef CONFIG_ARM_ERRATA_411920
diff --git a/arch/arm/include/asm/dma-mapping.h b/arch/arm/include/asm/dma-mapping.h
index ff46dfa68a97..a96300bf83fd 100644
--- a/arch/arm/include/asm/dma-mapping.h
+++ b/arch/arm/include/asm/dma-mapping.h
@@ -15,20 +15,15 @@
  * must not be used by drivers.
  */
 #ifndef __arch_page_to_dma
-
-#if !defined(CONFIG_HIGHMEM)
 static inline dma_addr_t page_to_dma(struct device *dev, struct page *page)
 {
-        return (dma_addr_t)__virt_to_bus((unsigned long)page_address(page));
+        return (dma_addr_t)__pfn_to_bus(page_to_pfn(page));
 }
-#elif defined(__pfn_to_bus)
-static inline dma_addr_t page_to_dma(struct device *dev, struct page *page)
+
+static inline struct page *dma_to_page(struct device *dev, dma_addr_t addr)
 {
-        return (dma_addr_t)__pfn_to_bus(page_to_pfn(page));
+        return pfn_to_page(__bus_to_pfn(addr));
 }
-#else
-#error "this machine class needs to define __arch_page_to_dma to use HIGHMEM"
-#endif
 
 static inline void *dma_to_virt(struct device *dev, dma_addr_t addr)
 {
@@ -45,6 +40,11 @@ static inline dma_addr_t page_to_dma(struct device *dev, struct page *page)
         return __arch_page_to_dma(dev, page);
 }
 
+static inline struct page *dma_to_page(struct device *dev, dma_addr_t addr)
+{
+        return __arch_dma_to_page(dev, addr);
+}
+
 static inline void *dma_to_virt(struct device *dev, dma_addr_t addr)
 {
         return __arch_dma_to_virt(dev, addr);
@@ -257,9 +257,11 @@ extern int dma_needs_bounce(struct device*, dma_addr_t, size_t);
  */
 extern dma_addr_t dma_map_single(struct device *, void *, size_t,
                 enum dma_data_direction);
+extern void dma_unmap_single(struct device *, dma_addr_t, size_t,
+                enum dma_data_direction);
 extern dma_addr_t dma_map_page(struct device *, struct page *,
                 unsigned long, size_t, enum dma_data_direction);
-extern void dma_unmap_single(struct device *, dma_addr_t, size_t,
+extern void dma_unmap_page(struct device *, dma_addr_t, size_t,
                 enum dma_data_direction);
 
 /*
@@ -352,7 +354,6 @@ static inline void dma_unmap_single(struct device *dev, dma_addr_t handle,
 {
         /* nothing to do */
 }
-#endif /* CONFIG_DMABOUNCE */
 
 /**
  * dma_unmap_page - unmap a buffer previously mapped through dma_map_page()
@@ -371,8 +372,9 @@ static inline void dma_unmap_single(struct device *dev, dma_addr_t handle,
 static inline void dma_unmap_page(struct device *dev, dma_addr_t handle,
                 size_t size, enum dma_data_direction dir)
 {
-        dma_unmap_single(dev, handle, size, dir);
+        /* nothing to do */
 }
+#endif /* CONFIG_DMABOUNCE */
 
 /**
  * dma_sync_single_range_for_cpu
diff --git a/arch/arm/include/asm/hardware/cache-tauros2.h b/arch/arm/include/asm/hardware/cache-tauros2.h
new file mode 100644
index 000000000000..538f17ca905b
--- /dev/null
+++ b/arch/arm/include/asm/hardware/cache-tauros2.h
@@ -0,0 +1,11 @@
+/*
+ * arch/arm/include/asm/hardware/cache-tauros2.h
+ *
+ * Copyright (C) 2008 Marvell Semiconductor
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+extern void __init tauros2_init(void);
diff --git a/arch/arm/include/asm/hardware/coresight.h b/arch/arm/include/asm/hardware/coresight.h
new file mode 100644
index 000000000000..f82b25d4f73e
--- /dev/null
+++ b/arch/arm/include/asm/hardware/coresight.h
@@ -0,0 +1,165 @@
+/*
+ * linux/arch/arm/include/asm/hardware/coresight.h
+ *
+ * CoreSight components' registers
+ *
+ * Copyright (C) 2009 Nokia Corporation.
+ * Alexander Shishkin
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __ASM_HARDWARE_CORESIGHT_H
+#define __ASM_HARDWARE_CORESIGHT_H
+
+#define TRACER_ACCESSED_BIT     0
+#define TRACER_RUNNING_BIT      1
+#define TRACER_CYCLE_ACC_BIT    2
+#define TRACER_ACCESSED         BIT(TRACER_ACCESSED_BIT)
+#define TRACER_RUNNING          BIT(TRACER_RUNNING_BIT)
+#define TRACER_CYCLE_ACC        BIT(TRACER_CYCLE_ACC_BIT)
+
+struct tracectx {
+        unsigned int    etb_bufsz;
+        void __iomem    *etb_regs;
+        void __iomem    *etm_regs;
+        unsigned long   flags;
+        int             ncmppairs;
+        int             etm_portsz;
+        struct device   *dev;
+        struct clk      *emu_clk;
+        struct mutex    mutex;
+};
+
+#define TRACER_TIMEOUT 10000
+
+#define etm_writel(t, v, x) \
+        (__raw_writel((v), (t)->etm_regs + (x)))
+#define etm_readl(t, x) (__raw_readl((t)->etm_regs + (x)))
+
+/* CoreSight Management Registers */
+#define CSMR_LOCKACCESS 0xfb0
+#define CSMR_LOCKSTATUS 0xfb4
+#define CSMR_AUTHSTATUS 0xfb8
+#define CSMR_DEVID      0xfc8
+#define CSMR_DEVTYPE    0xfcc
+/* CoreSight Component Registers */
+#define CSCR_CLASS      0xff4
+
+#define CSCR_PRSR       0x314
+
+#define UNLOCK_MAGIC    0xc5acce55
+
+/* ETM control register, "ETM Architecture", 3.3.1 */
+#define ETMR_CTRL               0
+#define ETMCTRL_POWERDOWN       1
+#define ETMCTRL_PROGRAM         (1 << 10)
+#define ETMCTRL_PORTSEL         (1 << 11)
+#define ETMCTRL_DO_CONTEXTID    (3 << 14)
+#define ETMCTRL_PORTMASK1       (7 << 4)
+#define ETMCTRL_PORTMASK2       (1 << 21)
+#define ETMCTRL_PORTMASK        (ETMCTRL_PORTMASK1 | ETMCTRL_PORTMASK2)
+#define ETMCTRL_PORTSIZE(x) ((((x) & 7) << 4) | (!!((x) & 8)) << 21)
+#define ETMCTRL_DO_CPRT         (1 << 1)
+#define ETMCTRL_DATAMASK        (3 << 2)
+#define ETMCTRL_DATA_DO_DATA    (1 << 2)
+#define ETMCTRL_DATA_DO_ADDR    (1 << 3)
+#define ETMCTRL_DATA_DO_BOTH    (ETMCTRL_DATA_DO_DATA | ETMCTRL_DATA_DO_ADDR)
+#define ETMCTRL_BRANCH_OUTPUT   (1 << 8)
+#define ETMCTRL_CYCLEACCURATE   (1 << 12)
+
+/* ETM configuration code register */
+#define ETMR_CONFCODE           (0x04)
+
+/* ETM trace start/stop resource control register */
+#define ETMR_TRACESSCTRL        (0x18)
+
+/* ETM trigger event register */
+#define ETMR_TRIGEVT            (0x08)
+
+/* address access type register bits, "ETM architecture",
+ * table 3-27 */
+/* - access type */
+#define ETMAAT_IFETCH           0
+#define ETMAAT_IEXEC            1
+#define ETMAAT_IEXECPASS        2
+#define ETMAAT_IEXECFAIL        3
+#define ETMAAT_DLOADSTORE       4
+#define ETMAAT_DLOAD            5
+#define ETMAAT_DSTORE           6
+/* - comparison access size */
+#define ETMAAT_JAVA             (0 << 3)
+#define ETMAAT_THUMB            (1 << 3)
+#define ETMAAT_ARM              (3 << 3)
+/* - data value comparison control */
+#define ETMAAT_NOVALCMP         (0 << 5)
+#define ETMAAT_VALMATCH         (1 << 5)
+#define ETMAAT_VALNOMATCH       (3 << 5)
+/* - exact match */
+#define ETMAAT_EXACTMATCH       (1 << 7)
+/* - context id comparator control */
+#define ETMAAT_IGNCONTEXTID     (0 << 8)
+#define ETMAAT_VALUE1           (1 << 8)
+#define ETMAAT_VALUE2           (2 << 8)
+#define ETMAAT_VALUE3           (3 << 8)
+/* - security level control */
+#define ETMAAT_IGNSECURITY      (0 << 10)
+#define ETMAAT_NSONLY           (1 << 10)
+#define ETMAAT_SONLY            (2 << 10)
+
+#define ETMR_COMP_VAL(x)        (0x40 + (x) * 4)
+#define ETMR_COMP_ACC_TYPE(x)   (0x80 + (x) * 4)
+
+/* ETM status register, "ETM Architecture", 3.3.2 */
+#define ETMR_STATUS             (0x10)
+#define ETMST_OVERFLOW          (1 << 0)
+#define ETMST_PROGBIT           (1 << 1)
+#define ETMST_STARTSTOP         (1 << 2)
+#define ETMST_TRIGGER           (1 << 3)
+
+#define etm_progbit(t)          (etm_readl((t), ETMR_STATUS) & ETMST_PROGBIT)
+#define etm_started(t)          (etm_readl((t), ETMR_STATUS) & ETMST_STARTSTOP)
+#define etm_triggered(t)        (etm_readl((t), ETMR_STATUS) & ETMST_TRIGGER)
+
+#define ETMR_TRACEENCTRL2       0x1c
+#define ETMR_TRACEENCTRL        0x24
+#define ETMTE_INCLEXCL          (1 << 24)
+#define ETMR_TRACEENEVT         0x20
+#define ETMCTRL_OPTS            (ETMCTRL_DO_CPRT | \
+                                ETMCTRL_DATA_DO_ADDR | \
+                                ETMCTRL_BRANCH_OUTPUT | \
+                                ETMCTRL_DO_CONTEXTID)
+
+/* ETB registers, "CoreSight Components TRM", 9.3 */
+#define ETBR_DEPTH              0x04
+#define ETBR_STATUS             0x0c
+#define ETBR_READMEM            0x10
+#define ETBR_READADDR           0x14
+#define ETBR_WRITEADDR          0x18
+#define ETBR_TRIGGERCOUNT       0x1c
+#define ETBR_CTRL               0x20
+#define ETBR_FORMATTERCTRL      0x304
+#define ETBFF_ENFTC             1
+#define ETBFF_ENFCONT           (1 << 1)
+#define ETBFF_FONFLIN           (1 << 4)
+#define ETBFF_MANUAL_FLUSH      (1 << 6)
+#define ETBFF_TRIGIN            (1 << 8)
+#define ETBFF_TRIGEVT           (1 << 9)
+#define ETBFF_TRIGFL            (1 << 10)
+
+#define etb_writel(t, v, x) \
+        (__raw_writel((v), (t)->etb_regs + (x)))
+#define etb_readl(t, x) (__raw_readl((t)->etb_regs + (x)))
+
+#define etm_lock(t) do { etm_writel((t), 0, CSMR_LOCKACCESS); } while (0)
+#define etm_unlock(t) \
+        do { etm_writel((t), UNLOCK_MAGIC, CSMR_LOCKACCESS); } while (0)
+
+#define etb_lock(t) do { etb_writel((t), 0, CSMR_LOCKACCESS); } while (0)
+#define etb_unlock(t) \
+        do { etb_writel((t), UNLOCK_MAGIC, CSMR_LOCKACCESS); } while (0)
+
+#endif /* __ASM_HARDWARE_CORESIGHT_H */
+
diff --git a/arch/arm/include/asm/hardware/iop3xx.h b/arch/arm/include/asm/hardware/iop3xx.h
index 8d60ad267e3a..5daea2961d48 100644
--- a/arch/arm/include/asm/hardware/iop3xx.h
+++ b/arch/arm/include/asm/hardware/iop3xx.h
@@ -234,7 +234,13 @@ extern int iop3xx_get_init_atu(void);
 void iop3xx_map_io(void);
 void iop_init_cp6_handler(void);
 void iop_init_time(unsigned long tickrate);
-unsigned long iop_gettimeoffset(void);
+
+static inline u32 read_tmr0(void)
+{
+        u32 val;
+        asm volatile("mrc p6, 0, %0, c0, c1, 0" : "=r" (val));
+        return val;
+}
 
 static inline void write_tmr0(u32 val)
 {
@@ -253,6 +259,11 @@ static inline u32 read_tcr0(void)
         return val;
 }
 
+static inline void write_tcr0(u32 val)
+{
+        asm volatile("mcr p6, 0, %0, c2, c1, 0" : : "r" (val));
+}
+
 static inline u32 read_tcr1(void)
 {
         u32 val;
@@ -260,6 +271,11 @@ static inline u32 read_tcr1(void)
         return val;
 }
 
+static inline void write_tcr1(u32 val)
+{
+        asm volatile("mcr p6, 0, %0, c3, c1, 0" : : "r" (val));
+}
+
 static inline void write_trr0(u32 val)
 {
         asm volatile("mcr p6, 0, %0, c4, c1, 0" : : "r" (val));
diff --git a/arch/arm/include/asm/memory.h b/arch/arm/include/asm/memory.h
index cefedf062138..5421d82a2572 100644
--- a/arch/arm/include/asm/memory.h
+++ b/arch/arm/include/asm/memory.h
@@ -125,8 +125,10 @@
  * private definitions which should NOT be used outside memory.h
  * files.  Use virt_to_phys/phys_to_virt/__pa/__va instead.
  */
+#ifndef __virt_to_phys
 #define __virt_to_phys(x)       ((x) - PAGE_OFFSET + PHYS_OFFSET)
 #define __phys_to_virt(x)       ((x) - PHYS_OFFSET + PAGE_OFFSET)
+#endif
 
 /*
  * Convert a physical address to a Page Frame Number and back
@@ -134,6 +136,12 @@
 #define __phys_to_pfn(paddr)    ((paddr) >> PAGE_SHIFT)
 #define __pfn_to_phys(pfn)      ((pfn) << PAGE_SHIFT)
 
+/*
+ * Convert a page to/from a physical address
+ */
+#define page_to_phys(page)      (__pfn_to_phys(page_to_pfn(page)))
+#define phys_to_page(phys)      (pfn_to_page(__phys_to_pfn(phys)))
+
 #ifndef __ASSEMBLY__
 
 /*
@@ -194,7 +202,8 @@ static inline void *phys_to_virt(unsigned long x)
 #ifndef __virt_to_bus
 #define __virt_to_bus   __virt_to_phys
 #define __bus_to_virt   __phys_to_virt
-#define __pfn_to_bus(x) ((x) << PAGE_SHIFT)
+#define __pfn_to_bus(x) __pfn_to_phys(x)
+#define __bus_to_pfn(x) __phys_to_pfn(x)
 #endif
 
 static inline __deprecated unsigned long virt_to_bus(void *x)
@@ -293,11 +302,6 @@ static inline __deprecated void *bus_to_virt(unsigned long x)
 #endif /* !CONFIG_DISCONTIGMEM */
 
 /*
- * For BIO.  "will die".  Kill me when bio_to_phys() and bvec_to_phys() die.
- */
-#define page_to_phys(page)      (page_to_pfn(page) << PAGE_SHIFT)
-
-/*
  * Optional coherency support.  Currently used only by selected
  * Intel XSC3-based systems.
  */
diff --git a/arch/arm/include/asm/pgtable.h b/arch/arm/include/asm/pgtable.h
index 201ccaa11f61..11397687f42c 100644
--- a/arch/arm/include/asm/pgtable.h
+++ b/arch/arm/include/asm/pgtable.h
@@ -304,13 +304,23 @@ PTE_BIT_FUNC(mkyoung,   |= L_PTE_YOUNG);
 
 static inline pte_t pte_mkspecial(pte_t pte) { return pte; }
 
+#define __pgprot_modify(prot,mask,bits)         \
+        __pgprot((pgprot_val(prot) & ~(mask)) | (bits))
+
 /*
  * Mark the prot value as uncacheable and unbufferable.
  */
 #define pgprot_noncached(prot) \
-        __pgprot((pgprot_val(prot) & ~L_PTE_MT_MASK) | L_PTE_MT_UNCACHED)
+        __pgprot_modify(prot, L_PTE_MT_MASK, L_PTE_MT_UNCACHED)
 #define pgprot_writecombine(prot) \
-        __pgprot((pgprot_val(prot) & ~L_PTE_MT_MASK) | L_PTE_MT_BUFFERABLE)
+        __pgprot_modify(prot, L_PTE_MT_MASK, L_PTE_MT_BUFFERABLE)
+#if __LINUX_ARM_ARCH__ >= 7
+#define pgprot_dmacoherent(prot) \
+        __pgprot_modify(prot, L_PTE_MT_MASK|L_PTE_EXEC, L_PTE_MT_BUFFERABLE)
+#else
+#define pgprot_dmacoherent(prot) \
+        __pgprot_modify(prot, L_PTE_MT_MASK|L_PTE_EXEC, L_PTE_MT_UNCACHED)
+#endif
 
 #define pmd_none(pmd)           (!pmd_val(pmd))
 #define pmd_present(pmd)        (pmd_val(pmd))
diff --git a/arch/arm/include/asm/swab.h b/arch/arm/include/asm/swab.h
index ca2bf2f6d6ea..9997ad20eff1 100644
--- a/arch/arm/include/asm/swab.h
+++ b/arch/arm/include/asm/swab.h
@@ -22,6 +22,24 @@
 #  define __SWAB_64_THRU_32__
 #endif
 
+#if defined(__KERNEL__) && __LINUX_ARM_ARCH__ >= 6
+
+static inline __attribute_const__ __u16 __arch_swab16(__u16 x)
+{
+        __asm__ ("rev16 %0, %1" : "=r" (x) : "r" (x));
+        return x;
+}
+#define __arch_swab16 __arch_swab16
+
+static inline __attribute_const__ __u32 __arch_swab32(__u32 x)
+{
+        __asm__ ("rev %0, %1" : "=r" (x) : "r" (x));
+        return x;
+}
+#define __arch_swab32 __arch_swab32
+
+#else
+
 static inline __attribute_const__ __u32 __arch_swab32(__u32 x)
 {
         __u32 t;
@@ -48,3 +66,4 @@ static inline __attribute_const__ __u32 __arch_swab32(__u32 x)
 
 #endif
 
+#endif
diff --git a/arch/arm/include/asm/system.h b/arch/arm/include/asm/system.h
index d65b2f5bf41f..058e7e90881d 100644
--- a/arch/arm/include/asm/system.h
+++ b/arch/arm/include/asm/system.h
@@ -138,21 +138,26 @@ extern unsigned int user_debug;
 #define dmb() __asm__ __volatile__ ("" : : : "memory")
 #endif
 
-#ifndef CONFIG_SMP
+#if __LINUX_ARM_ARCH__ >= 7 || defined(CONFIG_SMP)
+#define mb()            dmb()
+#define rmb()           dmb()
+#define wmb()           dmb()
+#else
 #define mb()    do { if (arch_is_coherent()) dmb(); else barrier(); } while (0)
 #define rmb()   do { if (arch_is_coherent()) dmb(); else barrier(); } while (0)
 #define wmb()   do { if (arch_is_coherent()) dmb(); else barrier(); } while (0)
+#endif
+
+#ifndef CONFIG_SMP
 #define smp_mb()        barrier()
 #define smp_rmb()       barrier()
 #define smp_wmb()       barrier()
 #else
-#define mb()            dmb()
-#define rmb()           dmb()
-#define wmb()           dmb()
-#define smp_mb()        dmb()
-#define smp_rmb()       dmb()
-#define smp_wmb()       dmb()
+#define smp_mb()        mb()
+#define smp_rmb()       rmb()
+#define smp_wmb()       wmb()
 #endif
+
 #define read_barrier_depends()          do { } while(0)
 #define smp_read_barrier_depends()      do { } while(0)