Merge branch 'depends/tty' into next/headers

Merging in Greg's tty tree including a cleanup patch needed by the OMAP serial
header cleanups.

* depends/tty: (305 commits)
  tty/serial/8250: Make omap hardware workarounds local to 8250.h
  serial/8250/8250_early: Prevent rounding error in uartclk
  serial: samsung: use clk_prepare_enable and clk_disable_unprepare
  TTY: Report warning when low_latency flag is wrongly used
  console: use might_sleep in console_lock
  TTY: move tty buffers to tty_port
  TTY: add port -> tty link
  TTY: tty_buffer, cache pointer to tty->buf
  TTY: move TTY_FLUSH* flags to tty_port
  TTY: n_tty, propagate n_tty_data
  TTY: move ldisc data from tty_struct: locks
  TTY: move ldisc data from tty_struct: read_* and echo_* and canon_* stuff
  TTY: move ldisc data from tty_struct: bitmaps
  TTY: move ldisc data from tty_struct: simple members
  TTY: n_tty, add ldisc data to n_tty
  TTY: audit, stop accessing tty->icount
  TTY: n_tty, remove bogus checks
  TTY: n_tty, simplify read_buf+echo_buf allocation
  TTY: hci_ldisc, remove invalid check in open
  TTY: ldisc, wait for idle ldisc in release
  ...

1 files changed, 77 insertions, 0 deletions

diff --git a/arch/xtensa/include/uapi/asm/ptrace.h b/arch/xtensa/include/uapi/asm/ptrace.h
new file mode 100644
index 000000000000..ee17aa842fdf
--- /dev/null
+++ b/arch/xtensa/include/uapi/asm/ptrace.h
@@ -0,0 +1,77 @@
+/*
+ * include/asm-xtensa/ptrace.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _UAPI_XTENSA_PTRACE_H
+#define _UAPI_XTENSA_PTRACE_H
+
+/*
+ * Kernel stack
+ *
+ *              +-----------------------+  -------- STACK_SIZE
+ *              |     register file     |  |
+ *              +-----------------------+  |
+ *              |    struct pt_regs     |  |
+ *              +-----------------------+  | ------ PT_REGS_OFFSET
+ * double       :  16 bytes spill area  :  |  ^
+ * excetion     :- - - - - - - - - - - -:  |  |
+ * frame        :    struct pt_regs     :  |  |
+ *              :- - - - - - - - - - - -:  |  |
+ *              |                       |  |  |
+ *              |     memory stack      |  |  |
+ *              |                       |  |  |
+ *              ~                       ~  ~  ~
+ *              ~                       ~  ~  ~
+ *              |                       |  |  |
+ *              |                       |  |  |
+ *              +-----------------------+  |  | --- STACK_BIAS
+ *              |  struct task_struct   |  |  |  ^
+ *  current --> +-----------------------+  |  |  |
+ *              |  struct thread_info   |  |  |  |
+ *              +-----------------------+ --------
+ */
+
+#define KERNEL_STACK_SIZE (2 * PAGE_SIZE)
+
+/*  Offsets for exception_handlers[] (3 x 64-entries x 4-byte tables). */
+
+#define EXC_TABLE_KSTK          0x004   /* Kernel Stack */
+#define EXC_TABLE_DOUBLE_SAVE   0x008   /* Double exception save area for a0 */
+#define EXC_TABLE_FIXUP         0x00c   /* Fixup handler */
+#define EXC_TABLE_PARAM         0x010   /* For passing a parameter to fixup */
+#define EXC_TABLE_SYSCALL_SAVE  0x014   /* For fast syscall handler */
+#define EXC_TABLE_FAST_USER     0x100   /* Fast user exception handler */
+#define EXC_TABLE_FAST_KERNEL   0x200   /* Fast kernel exception handler */
+#define EXC_TABLE_DEFAULT       0x300   /* Default C-Handler */
+#define EXC_TABLE_SIZE          0x400
+
+/* Registers used by strace */
+
+#define REG_A_BASE      0x0000
+#define REG_AR_BASE     0x0100
+#define REG_PC          0x0020
+#define REG_PS          0x02e6
+#define REG_WB          0x0248
+#define REG_WS          0x0249
+#define REG_LBEG        0x0200
+#define REG_LEND        0x0201
+#define REG_LCOUNT      0x0202
+#define REG_SAR         0x0203
+
+#define SYSCALL_NR      0x00ff
+
+/* Other PTRACE_ values defined in <linux/ptrace.h> using values 0-9,16,17,24 */
+
+#define PTRACE_GETREGS          12
+#define PTRACE_SETREGS          13
+#define PTRACE_GETXTREGS        18
+#define PTRACE_SETXTREGS        19
+
+
+#endif /* _UAPI_XTENSA_PTRACE_H */