Merge ARM fixes

11 files changed, 46 insertions, 121 deletions

diff --git a/arch/um/include/chan_kern.h b/arch/um/include/chan_kern.h
index 9003a343e148..c4b41bb1035f 100644
--- a/arch/um/include/chan_kern.h
+++ b/arch/um/include/chan_kern.h
@@ -30,14 +30,13 @@ struct chan {
 extern void chan_interrupt(struct list_head *chans, struct delayed_work *task,
                            struct tty_struct *tty, int irq);
 extern int parse_chan_pair(char *str, struct line *line, int device,
-                           const struct chan_opts *opts);
+                           const struct chan_opts *opts, char **error_out);
 extern int open_chan(struct list_head *chans);
 extern int write_chan(struct list_head *chans, const char *buf, int len,
                              int write_irq);
 extern int console_write_chan(struct list_head *chans, const char *buf, 
                               int len);
-extern int console_open_chan(struct line *line, struct console *co,
-                             const struct chan_opts *opts);
+extern int console_open_chan(struct line *line, struct console *co);
 extern void deactivate_chan(struct list_head *chans, int irq);
 extern void reactivate_chan(struct list_head *chans, int irq);
 extern void chan_enable_winch(struct list_head *chans, struct tty_struct *tty);
diff --git a/arch/um/include/chan_user.h b/arch/um/include/chan_user.h
index a795547a1dbd..38f16d812e7c 100644
--- a/arch/um/include/chan_user.h
+++ b/arch/um/include/chan_user.h
@@ -1,4 +1,4 @@
-/* 
+/*
  * Copyright (C) 2000, 2001 Jeff Dike (jdike@karaya.com)
  * Licensed under the GPL
  */
@@ -9,11 +9,11 @@
 #include "init.h"
 
 struct chan_opts {
-        void (*announce)(char *dev_name, int dev);
+        void (*const announce)(char *dev_name, int dev);
         char *xterm_title;
-        int raw;
-        unsigned long tramp_stack;
-        int in_kernel;
+        const int raw;
+        const unsigned long tramp_stack;
+        const int in_kernel;
 };
 
 enum chan_init_pri { INIT_STATIC, INIT_ALL, INIT_ONE };
@@ -54,14 +54,3 @@ __uml_help(fn, prefix "[0-9]*=<channel description>\n" \
 );
 
 #endif
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only.  This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
diff --git a/arch/um/include/kern_util.h b/arch/um/include/kern_util.h
index cec9fcc57bf5..173af029d12b 100644
--- a/arch/um/include/kern_util.h
+++ b/arch/um/include/kern_util.h
@@ -61,7 +61,6 @@ extern int set_signals(int enable);
 extern void force_sigbus(void);
 extern int pid_to_processor_id(int pid);
 extern void deliver_signals(void *t);
-extern int next_syscall_index(int max);
 extern int next_trap_index(int max);
 extern void default_idle(void);
 extern void finish_fork(void);
@@ -88,7 +87,6 @@ extern void timer_irq(union uml_pt_regs *regs);
 extern void unprotect_stack(unsigned long stack);
 extern void do_uml_exitcalls(void);
 extern int attach_debugger(int idle_pid, int pid, int stop);
-extern void bad_segv(struct faultinfo fi, unsigned long ip);
 extern int config_gdb(char *str);
 extern int remove_gdb(void);
 extern char *uml_strdup(char *string);
@@ -104,8 +102,6 @@ extern int clear_user_proc(void *buf, int size);
 extern int copy_to_user_proc(void *to, void *from, int size);
 extern int copy_from_user_proc(void *to, void *from, int size);
 extern int strlen_user_proc(char *str);
-extern void bus_handler(int sig, union uml_pt_regs *regs);
-extern void winch(int sig, union uml_pt_regs *regs);
 extern long execute_syscall(void *r);
 extern int smp_sigio_handler(void);
 extern void *get_current(void);
@@ -120,7 +116,6 @@ extern void time_init_kern(void);
 
 /* Are we disallowed to sleep? Used to choose between GFP_KERNEL and GFP_ATOMIC. */
 extern int __cant_sleep(void);
-extern void segv_handler(int sig, union uml_pt_regs *regs);
 extern void sigio_handler(int sig, union uml_pt_regs *regs);
 
 #endif
diff --git a/arch/um/include/line.h b/arch/um/include/line.h
index 5f232ae89fbb..1223f2c844b4 100644
--- a/arch/um/include/line.h
+++ b/arch/um/include/line.h
@@ -11,36 +11,37 @@
 #include "linux/tty.h"
 #include "linux/interrupt.h"
 #include "linux/spinlock.h"
+#include "linux/mutex.h"
 #include "chan_user.h"
 #include "mconsole_kern.h"
 
+/* There's only one modifiable field in this - .mc.list */
 struct line_driver {
-        char *name;
-        char *device_name;
-        short major;
-        short minor_start;
-        short type;
-        short subtype;
-        int read_irq;
-        char *read_irq_name;
-        int write_irq;
-        char *write_irq_name;
-        char *symlink_from;
-        char *symlink_to;
+        const char *name;
+        const char *device_name;
+        const short major;
+        const short minor_start;
+        const short type;
+        const short subtype;
+        const int read_irq;
+        const char *read_irq_name;
+        const int write_irq;
+        const char *write_irq_name;
         struct mc_device mc;
 };
 
 struct line {
         struct tty_struct *tty;
+        spinlock_t count_lock;
+        int valid;
+
         char *init_str;
         int init_pri;
         struct list_head chan_list;
-        int valid;
-        int count;
-        int throttled;
+
         /*This lock is actually, mostly, local to*/
         spinlock_t lock;
-
+        int throttled;
         /* Yes, this is a real circular buffer.
          * XXX: And this should become a struct kfifo!
          *
@@ -57,22 +58,17 @@ struct line {
 };
 
 #define LINE_INIT(str, d) \
-        { .init_str =   str, \
+        { .count_lock = SPIN_LOCK_UNLOCKED, \
+          .init_str =   str,    \
           .init_pri =   INIT_STATIC, \
           .valid =      1, \
           .lock =       SPIN_LOCK_UNLOCKED, \
           .driver =     d }
 
-struct lines {
-        int num;
-};
-
-#define LINES_INIT(n) {  .num = n }
-
 extern void line_close(struct tty_struct *tty, struct file * filp);
 extern int line_open(struct line *lines, struct tty_struct *tty);
 extern int line_setup(struct line *lines, unsigned int sizeof_lines,
-                      char *init);
+                      char *init, char **error_out);
 extern int line_write(struct tty_struct *tty, const unsigned char *buf,
                       int len);
 extern void line_put_char(struct tty_struct *tty, unsigned char ch);
@@ -90,17 +86,18 @@ extern char *add_xterm_umid(char *base);
 extern int line_setup_irq(int fd, int input, int output, struct line *line,
                           void *data);
 extern void line_close_chan(struct line *line);
-extern struct tty_driver * line_register_devfs(struct lines *set,
-                                               struct line_driver *line_driver,
-                                               const struct tty_operations *driver,
-                                               struct line *lines, int nlines);
+extern struct tty_driver *register_lines(struct line_driver *line_driver,
+                                         const struct tty_operations *driver,
+                                         struct line *lines, int nlines);
 extern void lines_init(struct line *lines, int nlines, struct chan_opts *opts);
 extern void close_lines(struct line *lines, int nlines);
 
 extern int line_config(struct line *lines, unsigned int sizeof_lines,
-                       char *str, const struct chan_opts *opts);
+                       char *str, const struct chan_opts *opts,
+                       char **error_out);
 extern int line_id(char **str, int *start_out, int *end_out);
-extern int line_remove(struct line *lines, unsigned int sizeof_lines, int n);
+extern int line_remove(struct line *lines, unsigned int sizeof_lines, int n,
+                       char **error_out);
 extern int line_get_config(char *dev, struct line *lines,
                            unsigned int sizeof_lines, char *str,
                            int size, char **error_out);
diff --git a/arch/um/include/mconsole_kern.h b/arch/um/include/mconsole_kern.h
index 1ea6d928e1cd..d2fe07e78958 100644
--- a/arch/um/include/mconsole_kern.h
+++ b/arch/um/include/mconsole_kern.h
@@ -18,10 +18,10 @@ struct mconsole_entry {
 struct mc_device {
         struct list_head list;
         char *name;
-        int (*config)(char *);
+        int (*config)(char *, char **);
         int (*get_config)(char *, char *, int, char **);
-        int (*id)(char **, int *, int *);
-        int (*remove)(int);
+        int (*id)(char **, int *, int *);
+        int (*remove)(int, char **);
 };
 
 #define CONFIG_CHUNK(str, size, current, chunk, end) \
@@ -50,14 +50,3 @@ static inline void mconsole_register_dev(struct mc_device *new)
 #endif
 
 #endif
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only.  This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
diff --git a/arch/um/include/net_kern.h b/arch/um/include/net_kern.h
index 218f8b47fdcd..125ab42df18a 100644
--- a/arch/um/include/net_kern.h
+++ b/arch/um/include/net_kern.h
@@ -1,4 +1,4 @@
-/* 
+/*
  * Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
  * Licensed under the GPL
  */
@@ -36,7 +36,7 @@ struct uml_net_private {
         void (*remove)(void *);
         int (*read)(int, struct sk_buff **skb, struct uml_net_private *);
         int (*write)(int, struct sk_buff **skb, struct uml_net_private *);
-        
+
         void (*add_address)(unsigned char *, unsigned char *, void *);
         void (*delete_address)(unsigned char *, unsigned char *, void *);
         int (*set_mtu)(int mtu, void *);
@@ -52,18 +52,18 @@ struct net_kern_info {
 
 struct transport {
         struct list_head list;
-        char *name;
-        int (*setup)(char *, char **, void *);
+        const char *name;
+        int (* const setup)(char *, char **, void *);
         const struct net_user_info *user;
         const struct net_kern_info *kern;
-        int private_size;
-        int setup_size;
+        const int private_size;
+        const int setup_size;
 };
 
 extern struct net_device *ether_init(int);
 extern unsigned short ether_protocol(struct sk_buff *);
 extern struct sk_buff *ether_adjust_skb(struct sk_buff *skb, int extra);
-extern int tap_setup_common(char *str, char *type, char **dev_name, 
+extern int tap_setup_common(char *str, char *type, char **dev_name,
                             char **mac_out, char **gate_addr);
 extern void register_transport(struct transport *new);
 extern unsigned short eth_protocol(struct sk_buff *skb);
diff --git a/arch/um/include/os.h b/arch/um/include/os.h
index 13a86bd383d3..8629bd191492 100644
--- a/arch/um/include/os.h
+++ b/arch/um/include/os.h
@@ -137,7 +137,6 @@ extern int os_new_tty_pgrp(int fd, int pid);
 extern int os_get_ifname(int fd, char *namebuf);
 extern int os_set_slip(int fd);
 extern int os_set_owner(int fd, int pid);
-extern int os_sigio_async(int master, int slave);
 extern int os_mode_fd(int fd, int mode);
 
 extern int os_seek_file(int fd, __u64 offset);
@@ -341,4 +340,6 @@ extern void maybe_sigio_broken(int fd, int read);
 extern void sig_handler_common_skas(int sig, void *sc_ptr);
 extern void user_signal(int sig, union uml_pt_regs *regs, int pid);
 
+extern int os_arch_prctl(int pid, int code, unsigned long *addr);
+
 #endif
diff --git a/arch/um/include/sigio.h b/arch/um/include/sigio.h
index fe99ea163c2e..434f1a9ae4b3 100644
--- a/arch/um/include/sigio.h
+++ b/arch/um/include/sigio.h
@@ -12,14 +12,3 @@ extern void sigio_lock(void);
 extern void sigio_unlock(void);
 
 #endif
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only.  This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
diff --git a/arch/um/include/tempfile.h b/arch/um/include/tempfile.h
index e36d9e0f5105..d441eac936b9 100644
--- a/arch/um/include/tempfile.h
+++ b/arch/um/include/tempfile.h
@@ -9,13 +9,3 @@
 extern int make_tempfile(const char *template, char **tempname, int do_unlink);
 
 #endif
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only.  This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
diff --git a/arch/um/include/umid.h b/arch/um/include/umid.h
deleted file mode 100644
index 11373c851f15..000000000000
--- a/arch/um/include/umid.h
+++ /dev/null
@@ -1,22 +0,0 @@
-/*
- * Copyright (C) 2001 Jeff Dike (jdike@karaya.com)
- * Licensed under the GPL
- */
-
-#ifndef __UMID_H__
-#define __UMID_H__
-
-extern int umid_file_name(char *name, char *buf, int len);
-
-#endif
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only.  This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
diff --git a/arch/um/include/user_util.h b/arch/um/include/user_util.h
index 06625fefef33..023575f67343 100644
--- a/arch/um/include/user_util.h
+++ b/arch/um/include/user_util.h
@@ -38,8 +38,6 @@ extern unsigned long long highmem;
 
 extern char host_info[];
 
-extern char saved_command_line[];
-
 extern unsigned long _stext, _etext, _sdata, _edata, __bss_start, _end;
 extern unsigned long _unprotected_end;
 extern unsigned long brk_start;