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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>
This commit is contained in:
Peter Hurley 2013-06-15 09:14:28 -04:00 committed by Greg Kroah-Hartman
parent 6f9b028a8f
commit d1913e3916
1 changed files with 16 additions and 13 deletions
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29
drivers/tty/n_tty.c
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@ -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;
size_t n, head;
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;
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++;