Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus

* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
  [MIPS] Remove unused galileo-boars header files
  [MIPS] Rename SERIAL_PORT_DEFNS for EV64120
  [MIPS] Add UART IRQ number for EV64120
  [MIPS] Remove excite_flash.c
  [MIPS] Update i8259 resources.
  [MIPS] Make unwind_stack() can dig into interrupted context
  [MIPS] Stacktrace build-fix and improvement
  [MIPS] QEMU: Add support for little endian mips
  [MIPS] Remove __flush_icache_page
  [MIPS] lockdep: update defconfigs
  [MIPS] lockdep: Add STACKTRACE_SUPPORT and enable LOCKDEP_SUPPORT
  [MIPS] lockdep: fix TRACE_IRQFLAGS_SUPPORT

7 files changed, 78 insertions, 78 deletions

diff --git a/include/asm-mips/cacheflush.h b/include/asm-mips/cacheflush.h
index 36416fdfcf68..9ab59e2bb233 100644
--- a/include/asm-mips/cacheflush.h
+++ b/include/asm-mips/cacheflush.h
@@ -46,8 +46,6 @@ static inline void flush_dcache_page(struct page *page)
 #define flush_dcache_mmap_lock(mapping)         do { } while (0)
 #define flush_dcache_mmap_unlock(mapping)       do { } while (0)
 
-extern void (*__flush_icache_page)(struct vm_area_struct *vma,
-        struct page *page);
 static inline void flush_icache_page(struct vm_area_struct *vma,
         struct page *page)
 {
diff --git a/include/asm-mips/galileo-boards/ev96100.h b/include/asm-mips/galileo-boards/ev96100.h
deleted file mode 100644
index 070dfd84a8e8..000000000000
--- a/include/asm-mips/galileo-boards/ev96100.h
+++ /dev/null
@@ -1,55 +0,0 @@
-/*
- *
- */
-#ifndef _MIPS_EV96100_H
-#define _MIPS_EV96100_H
-
-#include <asm/addrspace.h>
-
-/*
- *   GT64120 config space base address
- */
-#define GT64120_BASE    (KSEG1ADDR(0x14000000))
-#define MIPS_GT_BASE    GT64120_BASE
-
-/*
- *   PCI Bus allocation
- */
-#define GT_PCI_MEM_BASE    0x12000000UL
-#define GT_PCI_MEM_SIZE    0x02000000UL
-#define GT_PCI_IO_BASE     0x10000000UL
-#define GT_PCI_IO_SIZE     0x02000000UL
-#define GT_ISA_IO_BASE     PCI_IO_BASE
-
-/*
- *   Duart I/O ports.
- */
-#define EV96100_COM1_BASE_ADDR  (0xBD000000 + 0x20)
-#define EV96100_COM2_BASE_ADDR  (0xBD000000 + 0x00)
-
-
-/*
- *   EV96100 interrupt controller register base.
- */
-#define EV96100_ICTRL_REGS_BASE (KSEG1ADDR(0x1f000000))
-
-/*
- *   EV96100 UART register base.
- */
-#define EV96100_UART0_REGS_BASE EV96100_COM1_BASE_ADDR
-#define EV96100_UART1_REGS_BASE EV96100_COM2_BASE_ADDR
-#define EV96100_BASE_BAUD       ( 3686400 / 16 )
-
-
-/*
- * Because of an error/peculiarity in the Galileo chip, we need to swap the
- * bytes when running bigendian.
- */
-#define __GT_READ(ofs)                                                  \
-        (*(volatile u32 *)(GT64120_BASE+(ofs)))
-#define __GT_WRITE(ofs, data)                                           \
-        do { *(volatile u32 *)(GT64120_BASE+(ofs)) = (data); } while (0)
-#define GT_READ(ofs)            le32_to_cpu(__GT_READ(ofs))
-#define GT_WRITE(ofs, data)     __GT_WRITE(ofs, cpu_to_le32(data))
-
-#endif /* !(_MIPS_EV96100_H) */
diff --git a/include/asm-mips/galileo-boards/ev96100int.h b/include/asm-mips/galileo-boards/ev96100int.h
deleted file mode 100644
index c58b16d06d6e..000000000000
--- a/include/asm-mips/galileo-boards/ev96100int.h
+++ /dev/null
@@ -1,12 +0,0 @@
-/*
- *
- */
-#ifndef _MIPS_EV96100INT_H
-#define _MIPS_EV96100INT_H
-
-#define EV96100INT_UART_0    6     /* IP 6 */
-#define EV96100INT_TIMER     7     /* IP 7 */
-
-extern void ev96100int_init(void);
-
-#endif /* !(_MIPS_EV96100_H) */
diff --git a/include/asm-mips/irqflags.h b/include/asm-mips/irqflags.h
index 43ca09a3a3d0..46bf5de5ac72 100644
--- a/include/asm-mips/irqflags.h
+++ b/include/asm-mips/irqflags.h
@@ -213,12 +213,37 @@ static inline int raw_irqs_disabled_flags(unsigned long flags)
  * Do the CPU's IRQ-state tracing from assembly code.
  */
 #ifdef CONFIG_TRACE_IRQFLAGS
+/* Reload some registers clobbered by trace_hardirqs_on */
+#ifdef CONFIG_64BIT
+# define TRACE_IRQS_RELOAD_REGS                                         \
+        LONG_L  $11, PT_R11(sp);                                        \
+        LONG_L  $10, PT_R10(sp);                                        \
+        LONG_L  $9, PT_R9(sp);                                          \
+        LONG_L  $8, PT_R8(sp);                                          \
+        LONG_L  $7, PT_R7(sp);                                          \
+        LONG_L  $6, PT_R6(sp);                                          \
+        LONG_L  $5, PT_R5(sp);                                          \
+        LONG_L  $4, PT_R4(sp);                                          \
+        LONG_L  $2, PT_R2(sp)
+#else
+# define TRACE_IRQS_RELOAD_REGS                                         \
+        LONG_L  $7, PT_R7(sp);                                          \
+        LONG_L  $6, PT_R6(sp);                                          \
+        LONG_L  $5, PT_R5(sp);                                          \
+        LONG_L  $4, PT_R4(sp);                                          \
+        LONG_L  $2, PT_R2(sp)
+#endif
 # define TRACE_IRQS_ON                                                  \
+        CLI;    /* make sure trace_hardirqs_on() is called in kernel level */ \
         jal     trace_hardirqs_on
+# define TRACE_IRQS_ON_RELOAD                                           \
+        TRACE_IRQS_ON;                                                  \
+        TRACE_IRQS_RELOAD_REGS
 # define TRACE_IRQS_OFF                                                 \
         jal     trace_hardirqs_off
 #else
 # define TRACE_IRQS_ON
+# define TRACE_IRQS_ON_RELOAD
 # define TRACE_IRQS_OFF
 #endif
 
diff --git a/include/asm-mips/mach-ev64120/mach-gt64120.h b/include/asm-mips/mach-ev64120/mach-gt64120.h
index 13b1443a7a65..7e272ce57ea3 100644
--- a/include/asm-mips/mach-ev64120/mach-gt64120.h
+++ b/include/asm-mips/mach-ev64120/mach-gt64120.h
@@ -42,6 +42,7 @@ extern unsigned long gt64120_base;
 #define EV64120_UART0_REGS_BASE (KSEG1ADDR(EV64120_COM1_BASE_ADDR))
 #define EV64120_UART1_REGS_BASE (KSEG1ADDR(EV64120_COM2_BASE_ADDR))
 #define EV64120_BASE_BAUD ( 3686400 / 16 )
+#define EV64120_UART_IRQ        6
 
 /*
  * PCI interrupts will come in on either the INTA or INTD interrups lines,
diff --git a/include/asm-mips/serial.h b/include/asm-mips/serial.h
index 035637c67e7c..c882e04e1497 100644
--- a/include/asm-mips/serial.h
+++ b/include/asm-mips/serial.h
@@ -55,19 +55,18 @@
  * Galileo EV64120 evaluation board
  */
 #ifdef CONFIG_MIPS_EV64120
-#include <asm/galileo-boards/ev96100.h>
-#include <asm/galileo-boards/ev96100int.h>
-#define EV96100_SERIAL_PORT_DEFNS                                  \
-    { .baud_base = EV96100_BASE_BAUD, .irq = EV96100INT_UART_0, \
+#include <mach-gt64120.h>
+#define EV64120_SERIAL_PORT_DEFNS                                  \
+    { .baud_base = EV64120_BASE_BAUD, .irq = EV64120_UART_IRQ, \
       .flags = STD_COM_FLAGS,  \
-      .iomem_base = EV96100_UART0_REGS_BASE, .iomem_reg_shift = 2, \
+      .iomem_base = EV64120_UART0_REGS_BASE, .iomem_reg_shift = 2, \
       .io_type = SERIAL_IO_MEM }, \
-    { .baud_base = EV96100_BASE_BAUD, .irq = EV96100INT_UART_0, \
+    { .baud_base = EV64120_BASE_BAUD, .irq = EV64120_UART_IRQ, \
       .flags = STD_COM_FLAGS, \
-      .iomem_base = EV96100_UART1_REGS_BASE, .iomem_reg_shift = 2, \
+      .iomem_base = EV64120_UART1_REGS_BASE, .iomem_reg_shift = 2, \
       .io_type = SERIAL_IO_MEM },
 #else
-#define EV96100_SERIAL_PORT_DEFNS
+#define EV64120_SERIAL_PORT_DEFNS
 #endif
 
 #ifdef CONFIG_MIPS_ITE8172
@@ -239,7 +238,7 @@
 
 #define SERIAL_PORT_DFNS                                \
         DDB5477_SERIAL_PORT_DEFNS                       \
-        EV96100_SERIAL_PORT_DEFNS                       \
+        EV64120_SERIAL_PORT_DEFNS                       \
         IP32_SERIAL_PORT_DEFNS                          \
         ITE_SERIAL_PORT_DEFNS                           \
         IVR_SERIAL_PORT_DEFNS                           \
diff --git a/include/asm-mips/stacktrace.h b/include/asm-mips/stacktrace.h
new file mode 100644
index 000000000000..07f873351a86
--- /dev/null
+++ b/include/asm-mips/stacktrace.h
@@ -0,0 +1,44 @@
+#ifndef _ASM_STACKTRACE_H
+#define _ASM_STACKTRACE_H
+
+#include <asm/ptrace.h>
+
+#ifdef CONFIG_KALLSYMS
+extern int raw_show_trace;
+extern unsigned long unwind_stack(struct task_struct *task, unsigned long *sp,
+                                  unsigned long pc, unsigned long *ra);
+#else
+#define raw_show_trace 1
+#define unwind_stack(task, sp, pc, ra)  0
+#endif
+
+static __always_inline void prepare_frametrace(struct pt_regs *regs)
+{
+#ifndef CONFIG_KALLSYMS
+        /*
+         * Remove any garbage that may be in regs (specially func
+         * addresses) to avoid show_raw_backtrace() to report them
+         */
+        memset(regs, 0, sizeof(*regs));
+#endif
+        __asm__ __volatile__(
+                ".set push\n\t"
+                ".set noat\n\t"
+#ifdef CONFIG_64BIT
+                "1: dla $1, 1b\n\t"
+                "sd $1, %0\n\t"
+                "sd $29, %1\n\t"
+                "sd $31, %2\n\t"
+#else
+                "1: la $1, 1b\n\t"
+                "sw $1, %0\n\t"
+                "sw $29, %1\n\t"
+                "sw $31, %2\n\t"
+#endif
+                ".set pop\n\t"
+                : "=m" (regs->cp0_epc),
+                "=m" (regs->regs[29]), "=m" (regs->regs[31])
+                : : "memory");
+}
+
+#endif /* _ASM_STACKTRACE_H */