diff options
| author | Peter Hurley <peter@hurleysoftware.com> | 2013-06-15 09:36:01 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-07-23 16:47:07 -0700 |
| commit | 1fc359fc3ea72314cc3ebdfa94c60e020c152cd2 (patch) | |
| tree | 302ccb5a8cd9dee3c5affe1407e1413b66e8a207 /include/linux/tty.h | |
| parent | f0f947c124e05ec977019b974b12dfe171dd7148 (diff) | |
tty: Compute flip buffer ptrs
The char_buf_ptr and flag_buf_ptr values are trivially derived from
the .data field offset; compute values as needed.
Fixes a long-standing type-mismatch with the char and flag ptrs.
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/tty.h')
| -rw-r--r-- | include/linux/tty.h | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/include/linux/tty.h b/include/linux/tty.h index 57a70d1d0412..87bbaa31ebf5 100644 --- a/include/linux/tty.h +++ b/include/linux/tty.h @@ -31,8 +31,6 @@ struct tty_buffer { struct tty_buffer *next; - char *char_buf_ptr; - unsigned char *flag_buf_ptr; int used; int size; int commit; @@ -41,6 +39,16 @@ struct tty_buffer { unsigned long data[0]; }; +static inline unsigned char *char_buf_ptr(struct tty_buffer *b, int ofs) +{ + return ((unsigned char *)b->data) + ofs; +} + +static inline char *flag_buf_ptr(struct tty_buffer *b, int ofs) +{ + return (char *)char_buf_ptr(b, ofs) + b->size; +} + /* * We default to dicing tty buffer allocations to this many characters * in order to avoid multiple page allocations. We know the size of |