Merge master.kernel.org:/home/rmk/linux-2.6-arm

* master.kernel.org:/home/rmk/linux-2.6-arm:
  ARM: 5965/1: Fix soft lockup in at91 udc driver
  ARM: 6006/1: ARM: Use the correct NOP size in memmove for Thumb-2 kernel builds
  ARM: 6005/1: arm: kprobes: fix register corruption with jprobes
  ARM: 6003/1: removing compilation warning from pl061.h
  ARM: 6001/1: removing compilation warning comming from clkdev.h
  ARM: 6000/1: removing compilation warning comming from <asm/irq.h>
  ARM: 5999/1: Including device.h and resource.h header files in linux/amba/bus.h
  ARM: 5997/1: ARM: Correct the VFPv3 detection
  ARM: 5996/1: ARM: Change the mandatory barriers implementation (4/4)
  ARM: 5995/1: ARM: Add L2x0 outer_sync() support (3/4)
  ARM: 5994/1: ARM: Add outer_cache_fns.sync function pointer (2/4)
  ARM: 5993/1: ARM: Move the outer_cache definitions into a separate file (1/4)

diff --git a/arch/arm/include/asm/cacheflush.h b/arch/arm/include/asm/cacheflush.h
index 72da7e045c6b306e4d2d40bbad1db22a603f4ed7..0d08d4170b64d08f2206ce292489a917a8cb0e99 100644 (file)
--- a/arch/arm/include/asm/cacheflush.h
+++ b/arch/arm/include/asm/cacheflush.h
@@ -15,6 +15,7 @@
 #include <asm/glue.h>
 #include <asm/shmparam.h>
 #include <asm/cachetype.h>
+#include <asm/outercache.h>
 
 #define CACHE_COLOUR(vaddr)    ((vaddr & (SHMLBA - 1)) >> PAGE_SHIFT)
 
@@ -219,12 +220,6 @@ struct cpu_cache_fns {
        void (*dma_flush_range)(const void *, const void *);
 };
 
-struct outer_cache_fns {
-       void (*inv_range)(unsigned long, unsigned long);
-       void (*clean_range)(unsigned long, unsigned long);
-       void (*flush_range)(unsigned long, unsigned long);
-};
-
 /*
  * Select the calling method
  */
@@ -281,37 +276,6 @@ extern void dmac_flush_range(const void *, const void *);
 
 #endif
 
-#ifdef CONFIG_OUTER_CACHE
-
-extern struct outer_cache_fns outer_cache;
-
-static inline void outer_inv_range(unsigned long start, unsigned long end)
-{
-       if (outer_cache.inv_range)
-               outer_cache.inv_range(start, end);
-}
-static inline void outer_clean_range(unsigned long start, unsigned long end)
-{
-       if (outer_cache.clean_range)
-               outer_cache.clean_range(start, end);
-}
-static inline void outer_flush_range(unsigned long start, unsigned long end)
-{
-       if (outer_cache.flush_range)
-               outer_cache.flush_range(start, end);
-}
-
-#else
-
-static inline void outer_inv_range(unsigned long start, unsigned long end)
-{ }
-static inline void outer_clean_range(unsigned long start, unsigned long end)
-{ }
-static inline void outer_flush_range(unsigned long start, unsigned long end)
-{ }
-
-#endif
-
 /*
  * Copy user data from/to a page which is mapped into a different
  * processes address space.  Really, we want to allow our "user

diff --git a/arch/arm/include/asm/clkdev.h b/arch/arm/include/asm/clkdev.h
index 7a0690da5e63235b6a8b1345adc2f396b29287c8..b56c1389b6fa49da16bb940a04931480a4466c84 100644 (file)
--- a/arch/arm/include/asm/clkdev.h
+++ b/arch/arm/include/asm/clkdev.h
@@ -13,6 +13,7 @@
 #define __ASM_CLKDEV_H
 
 struct clk;
+struct device;
 
 struct clk_lookup {
        struct list_head        node;

diff --git a/arch/arm/include/asm/irq.h b/arch/arm/include/asm/irq.h
index 328f14a8b79034a3d71e713780a0d8caed9279d6..237282f7c762f3056b2ce76ab1a0e18d75a1499c 100644 (file)
--- a/arch/arm/include/asm/irq.h
+++ b/arch/arm/include/asm/irq.h
@@ -17,6 +17,7 @@
 
 #ifndef __ASSEMBLY__
 struct irqaction;
+struct pt_regs;
 extern void migrate_irqs(void);
 
 extern void asm_do_IRQ(unsigned int, struct pt_regs *);

diff --git a/arch/arm/include/asm/outercache.h b/arch/arm/include/asm/outercache.h
new file mode 100644 (file)
index 0000000..25f76ba
--- /dev/null
+++ b/arch/arm/include/asm/outercache.h
@@ -0,0 +1,75 @@
+/*
+ * arch/arm/include/asm/outercache.h
+ *
+ * Copyright (C) 2010 ARM Ltd.
+ * Written by Catalin Marinas <catalin.marinas@arm.com>
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#ifndef __ASM_OUTERCACHE_H
+#define __ASM_OUTERCACHE_H
+
+struct outer_cache_fns {
+       void (*inv_range)(unsigned long, unsigned long);
+       void (*clean_range)(unsigned long, unsigned long);
+       void (*flush_range)(unsigned long, unsigned long);
+#ifdef CONFIG_OUTER_CACHE_SYNC
+       void (*sync)(void);
+#endif
+};
+
+#ifdef CONFIG_OUTER_CACHE
+
+extern struct outer_cache_fns outer_cache;
+
+static inline void outer_inv_range(unsigned long start, unsigned long end)
+{
+       if (outer_cache.inv_range)
+               outer_cache.inv_range(start, end);
+}
+static inline void outer_clean_range(unsigned long start, unsigned long end)
+{
+       if (outer_cache.clean_range)
+               outer_cache.clean_range(start, end);
+}
+static inline void outer_flush_range(unsigned long start, unsigned long end)
+{
+       if (outer_cache.flush_range)
+               outer_cache.flush_range(start, end);
+}
+
+#else
+
+static inline void outer_inv_range(unsigned long start, unsigned long end)
+{ }
+static inline void outer_clean_range(unsigned long start, unsigned long end)
+{ }
+static inline void outer_flush_range(unsigned long start, unsigned long end)
+{ }
+
+#endif
+
+#ifdef CONFIG_OUTER_CACHE_SYNC
+static inline void outer_sync(void)
+{
+       if (outer_cache.sync)
+               outer_cache.sync();
+}
+#else
+static inline void outer_sync(void)
+{ }
+#endif
+
+#endif /* __ASM_OUTERCACHE_H */

diff --git a/arch/arm/include/asm/system.h b/arch/arm/include/asm/system.h
index ca88e6a84707350bad0b1ab3bd7eefcd116be506..4ace45ec3ef84f5d15d72db4b96f89a5e87fa3be 100644 (file)
--- a/arch/arm/include/asm/system.h
+++ b/arch/arm/include/asm/system.h
@@ -60,6 +60,8 @@
 #include <linux/linkage.h>
 #include <linux/irqflags.h>
 
+#include <asm/outercache.h>
+
 #define __exception    __attribute__((section(".exception.text")))
 
 struct thread_info;
@@ -137,10 +139,12 @@ extern unsigned int user_debug;
 #define dmb() __asm__ __volatile__ ("" : : : "memory")
 #endif
 
-#if __LINUX_ARM_ARCH__ >= 7 || defined(CONFIG_SMP)
-#define mb()           dmb()
+#ifdef CONFIG_ARCH_HAS_BARRIERS
+#include <mach/barriers.h>
+#elif __LINUX_ARM_ARCH__ >= 7 || defined(CONFIG_SMP)
+#define mb()           do { dsb(); outer_sync(); } while (0)
 #define rmb()          dmb()
-#define wmb()          dmb()
+#define wmb()          mb()
 #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)
@@ -152,9 +156,9 @@ extern unsigned int user_debug;
 #define smp_rmb()      barrier()
 #define smp_wmb()      barrier()
 #else
-#define smp_mb()       mb()
-#define smp_rmb()      rmb()
-#define smp_wmb()      wmb()
+#define smp_mb()       dmb()
+#define smp_rmb()      dmb()
+#define smp_wmb()      dmb()
 #endif
 
 #define read_barrier_depends()         do { } while(0)

diff --git a/arch/arm/kernel/kprobes.c b/arch/arm/kernel/kprobes.c
index 60c62c377fa91bffe0de06e14a3b8a4187343240..610e0f561c328da554d2f514780ff718b0601b82 100644 (file)
--- a/arch/arm/kernel/kprobes.c
+++ b/arch/arm/kernel/kprobes.c
@@ -393,6 +393,14 @@ void __kprobes jprobe_return(void)
                /*
                 * Setup an empty pt_regs. Fill SP and PC fields as
                 * they're needed by longjmp_break_handler.
+                *
+                * We allocate some slack between the original SP and start of
+                * our fabricated regs. To be precise we want to have worst case
+                * covered which is STMFD with all 16 regs so we allocate 2 *
+                * sizeof(struct_pt_regs)).
+                *
+                * This is to prevent any simulated instruction from writing
+                * over the regs when they are accessing the stack.
                 */
                "sub    sp, %0, %1              \n\t"
                "ldr    r0, ="__stringify(JPROBE_MAGIC_ADDR)"\n\t"
@@ -410,7 +418,7 @@ void __kprobes jprobe_return(void)
                "ldmia  sp, {r0 - pc}           \n\t"
                :
                : "r" (kcb->jprobe_saved_regs.ARM_sp),
-                 "I" (sizeof(struct pt_regs)),
+                 "I" (sizeof(struct pt_regs) * 2),
                  "J" (offsetof(struct pt_regs, ARM_sp)),
                  "J" (offsetof(struct pt_regs, ARM_pc)),
                  "J" (offsetof(struct pt_regs, ARM_cpsr))

diff --git a/arch/arm/lib/memmove.S b/arch/arm/lib/memmove.S
index 5025c863713d60decb20d5924109bef0a7c48ef9..938fc14f962d35693cc96c9d3f8899ae1b5bd193 100644 (file)
--- a/arch/arm/lib/memmove.S
+++ b/arch/arm/lib/memmove.S
@@ -74,7 +74,7 @@ ENTRY(memmove)
                rsb     ip, ip, #32
                addne   pc, pc, ip              @ C is always clear here
                b       7f
-6:             nop
+6:             W(nop)
                W(ldr)  r3, [r1, #-4]!
                W(ldr)  r4, [r1, #-4]!
                W(ldr)  r5, [r1, #-4]!
@@ -85,7 +85,7 @@ ENTRY(memmove)
 
                add     pc, pc, ip
                nop
-               nop
+               W(nop)
                W(str)  r3, [r0, #-4]!
                W(str)  r4, [r0, #-4]!
                W(str)  r5, [r0, #-4]!

diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig
index c4ed9f93f646be93fbdcc048a326c5d7db995bcd..5bd7c89a604515273212ea304a02353ab9af5c39 100644 (file)
--- a/arch/arm/mm/Kconfig
+++ b/arch/arm/mm/Kconfig
@@ -736,6 +736,12 @@ config NEEDS_SYSCALL_FOR_CMPXCHG
 config OUTER_CACHE
        bool
 
+config OUTER_CACHE_SYNC
+       bool
+       help
+         The outer cache has a outer_cache_fns.sync function pointer
+         that can be used to drain the write buffer of the outer cache.
+
 config CACHE_FEROCEON_L2
        bool "Enable the Feroceon L2 cache controller"
        depends on ARCH_KIRKWOOD || ARCH_MV78XX0
@@ -757,6 +763,7 @@ config CACHE_L2X0
                   REALVIEW_EB_A9MP || ARCH_MX35 || ARCH_MX31 || MACH_REALVIEW_PBX || ARCH_NOMADIK || ARCH_OMAP4
        default y
        select OUTER_CACHE
+       select OUTER_CACHE_SYNC
        help
          This option enables the L2x0 PrimeCell.
 
@@ -781,3 +788,9 @@ config ARM_L1_CACHE_SHIFT
        int
        default 6 if ARM_L1_CACHE_SHIFT_6
        default 5
+
+config ARCH_HAS_BARRIERS
+       bool
+       help
+         This option allows the use of custom mandatory barriers
+         included via the mach/barriers.h file.

diff --git a/arch/arm/mm/cache-l2x0.c b/arch/arm/mm/cache-l2x0.c
index 07334632d3e2761293e1880b2486a2e85c3437e4..21ad68ba22bab8a3acd859cbba4df0fc36c93b72 100644 (file)
--- a/arch/arm/mm/cache-l2x0.c
+++ b/arch/arm/mm/cache-l2x0.c
@@ -93,6 +93,15 @@ static inline void l2x0_flush_line(unsigned long addr)
 }
 #endif
 
+static void l2x0_cache_sync(void)
+{
+       unsigned long flags;
+
+       spin_lock_irqsave(&l2x0_lock, flags);
+       cache_sync();
+       spin_unlock_irqrestore(&l2x0_lock, flags);
+}
+
 static inline void l2x0_inv_all(void)
 {
        unsigned long flags;
@@ -225,6 +234,7 @@ void __init l2x0_init(void __iomem *base, __u32 aux_val, __u32 aux_mask)
        outer_cache.inv_range = l2x0_inv_range;
        outer_cache.clean_range = l2x0_clean_range;
        outer_cache.flush_range = l2x0_flush_range;
+       outer_cache.sync = l2x0_cache_sync;
 
        printk(KERN_INFO "L2X0 cache controller enabled\n");
 }

diff --git a/arch/arm/vfp/vfpmodule.c b/arch/arm/vfp/vfpmodule.c
index 7f3f59fcaa2199dda10eebd5b7bfa62348643342..a420cb9493282c547e0edaae74255d9311374869 100644 (file)
--- a/arch/arm/vfp/vfpmodule.c
+++ b/arch/arm/vfp/vfpmodule.c
@@ -545,7 +545,7 @@ static int __init vfp_init(void)
                 */
                elf_hwcap |= HWCAP_VFP;
 #ifdef CONFIG_VFPv3
-               if (VFP_arch >= 3) {
+               if (VFP_arch >= 2) {
                        elf_hwcap |= HWCAP_VFPv3;
 
                        /*

diff --git a/drivers/usb/gadget/at91_udc.c b/drivers/usb/gadget/at91_udc.c
index 12ac9cd32a07562ec665f04636b75a263f68d9a8..df1bae9b048e4585f13f4b06ff720c497e667c54 100644 (file)
--- a/drivers/usb/gadget/at91_udc.c
+++ b/drivers/usb/gadget/at91_udc.c
@@ -1370,6 +1370,12 @@ static irqreturn_t at91_udc_irq (int irq, void *_udc)
 {
        struct at91_udc         *udc = _udc;
        u32                     rescans = 5;
+       int                     disable_clock = 0;
+
+       if (!udc->clocked) {
+               clk_on(udc);
+               disable_clock = 1;
+       }
 
        while (rescans--) {
                u32 status;
@@ -1458,6 +1464,9 @@ static irqreturn_t at91_udc_irq (int irq, void *_udc)
                }
        }
 
+       if (disable_clock)
+               clk_off(udc);
+
        return IRQ_HANDLED;
 }
 

diff --git a/include/linux/amba/bus.h b/include/linux/amba/bus.h
index 6816be6c3f7798bd64ec1d05a27d95f4b9e27c80..8b1038607831360ed621ddb5542c9f686338758e 100644 (file)
--- a/include/linux/amba/bus.h
+++ b/include/linux/amba/bus.h
@@ -14,6 +14,9 @@
 #ifndef ASMARM_AMBA_H
 #define ASMARM_AMBA_H
 
+#include <linux/device.h>
+#include <linux/resource.h>
+
 #define AMBA_NR_IRQS   2
 
 struct amba_device {

diff --git a/include/linux/amba/pl061.h b/include/linux/amba/pl061.h
index b4fbd9862606c76fc8accc05c18d0f2a1d4ab6ec..5ddd9ad4b19c9c381d77ab5c24a01031b4127ba3 100644 (file)
--- a/include/linux/amba/pl061.h
+++ b/include/linux/amba/pl061.h
@@ -1,3 +1,5 @@
+#include <linux/types.h>
+
 /* platform data for the PL061 GPIO driver */
 
 struct pl061_platform_data {