diff options
| author | Peter Hurley <peter@hurleysoftware.com> | 2013-06-15 09:14:28 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-07-23 16:43:01 -0700 |
| commit | d1913e3916f35eb043e8d770839dd96c1379007d (patch) | |
| tree | 1186ca9f5c96f24f2e9bf029613e9753202f31c7 /drivers/tty | |
| parent | 6f9b028a8fb9ba4cef0bd04ad4ce149c3f1e838f (diff) | |
n_tty: Fix type mismatches in receive_buf raw copy
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/n_tty.c | 31 |
1 files changed, 17 insertions, 14 deletions
diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c index e63beab3d1c3..fe1c39992c51 100644 --- a/drivers/tty/n_tty.c +++ b/drivers/tty/n_tty.c @@ -1444,24 +1444,27 @@ static void __receive_buf(struct tty_struct *tty, const unsigned char *cp, struct n_tty_data *ldata = tty->disc_data; const unsigned char *p; char *f, flags = TTY_NORMAL; - int i; char buf[64]; if (ldata->real_raw) { - i = min(N_TTY_BUF_SIZE - read_cnt(ldata), - N_TTY_BUF_SIZE - (ldata->read_head & (N_TTY_BUF_SIZE - 1))); - i = min(count, i); - memcpy(read_buf_addr(ldata, ldata->read_head), cp, i); - ldata->read_head += i; - cp += i; - count -= i; - - i = min(N_TTY_BUF_SIZE - read_cnt(ldata), - N_TTY_BUF_SIZE - (ldata->read_head & (N_TTY_BUF_SIZE - 1))); - i = min(count, i); - memcpy(read_buf_addr(ldata, ldata->read_head), cp, i); - ldata->read_head += i; + size_t n, head; + + head = ldata->read_head & (N_TTY_BUF_SIZE - 1); + n = N_TTY_BUF_SIZE - max(read_cnt(ldata), head); + n = min_t(size_t, count, n); + memcpy(read_buf_addr(ldata, head), cp, n); + ldata->read_head += n; + cp += n; + count -= n; + + head = ldata->read_head & (N_TTY_BUF_SIZE - 1); + n = N_TTY_BUF_SIZE - max(read_cnt(ldata), head); + n = min_t(size_t, count, n); + memcpy(read_buf_addr(ldata, head), cp, n); + ldata->read_head += n; } else { + int i; + for (i = count, p = cp, f = fp; i; i--, p++) { if (f) flags = *f++; |