diff options
| author | Alan Cox <alan@linux.intel.com> | 2010-02-18 16:43:54 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-03-02 14:55:11 -0800 |
| commit | 2832fc11f1360668482beec06dbcd631ae5f0cf1 (patch) | |
| tree | c56360c6fe1a2cb10241ee9e004937303a52e19b /drivers | |
| parent | e4a3d94658b5760fc947d7f7185c57db47ca362a (diff) | |
USB: tty: Add a function to insert a string of characters with the same flag
The USB drivers often want to insert a series of bytes all with the same
flag set - provide a helper for this case.
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/char/tty_buffer.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/drivers/char/tty_buffer.c b/drivers/char/tty_buffer.c index 66fa4e10d76..4c133459ab7 100644 --- a/drivers/char/tty_buffer.c +++ b/drivers/char/tty_buffer.c @@ -231,9 +231,10 @@ int tty_buffer_request_room(struct tty_struct *tty, size_t size) EXPORT_SYMBOL_GPL(tty_buffer_request_room); /** - * tty_insert_flip_string - Add characters to the tty buffer + * tty_insert_flip_string_fixed_flag - Add characters to the tty buffer * @tty: tty structure * @chars: characters + * @flag: flag value for each character * @size: size * * Queue a series of bytes to the tty buffering. All the characters @@ -242,8 +243,8 @@ EXPORT_SYMBOL_GPL(tty_buffer_request_room); * Locking: Called functions may take tty->buf.lock */ -int tty_insert_flip_string(struct tty_struct *tty, const unsigned char *chars, - size_t size) +int tty_insert_flip_string_fixed_flag(struct tty_struct *tty, + const unsigned char *chars, char flag, size_t size) { int copied = 0; do { @@ -253,7 +254,7 @@ int tty_insert_flip_string(struct tty_struct *tty, const unsigned char *chars, if (unlikely(space == 0)) break; memcpy(tb->char_buf_ptr + tb->used, chars, space); - memset(tb->flag_buf_ptr + tb->used, TTY_NORMAL, space); + memset(tb->flag_buf_ptr + tb->used, flag, space); tb->used += space; copied += space; chars += space; @@ -262,7 +263,7 @@ int tty_insert_flip_string(struct tty_struct *tty, const unsigned char *chars, } while (unlikely(size > copied)); return copied; } -EXPORT_SYMBOL(tty_insert_flip_string); +EXPORT_SYMBOL(tty_insert_flip_string_fixed_flag); /** * tty_insert_flip_string_flags - Add characters to the tty buffer |