arch/tile: Miscellaneous cleanup changes.

This commit is primarily changes caused by reviewing "sparse"
and "checkpatch" output on our sources, so is somewhat noisy, since
things like "printk() -> pr_err()" (or whatever) throughout the
codebase tend to get tedious to read.  Rather than trying to tease
apart precisely which things changed due to which type of code
review, this commit includes various cleanups in the code:

- sparse: Add declarations in headers for globals.
- sparse: Fix __user annotations.
- sparse: Using gfp_t consistently instead of int.
- sparse: removing functions not actually used.
- checkpatch: Clean up printk() warnings by using pr_info(), etc.;
  also avoid partial-line printks except in bootup code.
  - checkpatch: Use exposed structs rather than typedefs.
  - checkpatch: Change some C99 comments to C89 comments.

In addition, a couple of minor other changes are rolled in
to this commit:

- Add support for a "raise" instruction to cause SIGFPE, etc., to be raised.
- Remove some compat code that is unnecessary when we fully eliminate
  some of the deprecated syscalls from the generic syscall ABI.
- Update the tile_defconfig to reflect current config contents.

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>

1 files changed, 2 insertions, 53 deletions

diff --git a/arch/tile/include/asm/compat.h b/arch/tile/include/asm/compat.h
index b09292bcc19..5a34da6cdd7 100644
--- a/arch/tile/include/asm/compat.h
+++ b/arch/tile/include/asm/compat.h
@@ -70,48 +70,7 @@ struct compat_timeval {
 	s32		tv_usec;
 };
 
-struct compat_stat {
-	unsigned int	st_dev;
-	unsigned int	st_ino;
-	unsigned int	st_mode;
-	unsigned int	st_nlink;
-	unsigned int	st_uid;
-	unsigned int	st_gid;
-	unsigned int	st_rdev;
-	unsigned int    __pad1;
-	int		st_size;
-	int		st_blksize;
-	int		__pad2;
-	int		st_blocks;
-	int		st_atime;
-	unsigned int	st_atime_nsec;
-	int		st_mtime;
-	unsigned int	st_mtime_nsec;
-	int		st_ctime;
-	unsigned int	st_ctime_nsec;
-	unsigned int	__unused[2];
-};
-
-struct compat_stat64 {
-	unsigned long	st_dev;
-	unsigned long	st_ino;
-	unsigned int	st_mode;
-	unsigned int	st_nlink;
-	unsigned int	st_uid;
-	unsigned int	st_gid;
-	unsigned long	st_rdev;
-	long		st_size;
-	unsigned int	st_blksize;
-	unsigned long	st_blocks __attribute__((packed));
-	unsigned int	st_atime;
-	unsigned int	st_atime_nsec;
-	unsigned int	st_mtime;
-	unsigned int	st_mtime_nsec;
-	unsigned int	st_ctime;
-	unsigned int	st_ctime_nsec;
-	unsigned int	__unused8;
-};
-
+#define compat_stat stat
 #define compat_statfs statfs
 
 struct compat_sysctl {
@@ -233,7 +192,7 @@ static inline compat_uptr_t ptr_to_compat(void __user *uptr)
 /* Sign-extend when storing a kernel pointer to a user's ptregs. */
 static inline unsigned long ptr_to_compat_reg(void __user *uptr)
 {
-	return (long)(int)(long)uptr;
+	return (long)(int)(long __force)uptr;
 }
 
 static inline void __user *compat_alloc_user_space(long len)
@@ -278,17 +237,8 @@ long compat_sys_sync_file_range2(int fd, unsigned int flags,
 long compat_sys_fallocate(int fd, int mode,
 			  u32 offset_lo, u32 offset_hi,
 			  u32 len_lo, u32 len_hi);
-long compat_sys_stat64(char __user *filename,
-		       struct compat_stat64 __user *statbuf);
-long compat_sys_lstat64(char __user *filename,
-			struct compat_stat64 __user *statbuf);
-long compat_sys_fstat64(unsigned int fd, struct compat_stat64 __user *statbuf);
-long compat_sys_fstatat64(int dfd, char __user *filename,
-			  struct compat_stat64 __user *statbuf, int flag);
 long compat_sys_sched_rr_get_interval(compat_pid_t pid,
 				      struct compat_timespec __user *interval);
-ssize_t compat_sys_sendfile(int out_fd, int in_fd, compat_off_t __user *offset,
-			    size_t count);
 
 /* Versions of compat functions that differ from generic Linux. */
 struct compat_msgbuf;
@@ -302,7 +252,6 @@ long tile_compat_sys_ptrace(compat_long_t request, compat_long_t pid,
 			    compat_long_t addr, compat_long_t data);
 
 /* Tilera Linux syscalls that don't have "compat" versions. */
-#define compat_sys_raise_fpe sys_raise_fpe
 #define compat_sys_flush_cache sys_flush_cache
 
 #endif /* _ASM_TILE_COMPAT_H */