Remove some remaining vestiges of the old hacks jsm had to work around
the old tty buffering. With the new tty buffering it simply doesn't
matter any more.
Signed-off-by: Alan Cox <[email protected]>
diff -u --new-file --recursive --exclude-from /usr/src/exclude linux.vanilla-2.6.23rc1-mm1/drivers/serial/jsm/jsm_tty.c linux-2.6.23rc1-mm1/drivers/serial/jsm/jsm_tty.c
--- linux.vanilla-2.6.23rc1-mm1/drivers/serial/jsm/jsm_tty.c 2007-07-26 15:01:46.000000000 +0100
+++ linux-2.6.23rc1-mm1/drivers/serial/jsm/jsm_tty.c 2007-08-08 11:49:49.000000000 +0100
@@ -500,7 +500,6 @@
{
struct jsm_board *bd;
struct tty_struct *tp;
- struct tty_ldisc *ld;
u32 rmask;
u16 head;
u16 tail;
@@ -574,45 +573,13 @@
jsm_printk(READ, INFO, &ch->ch_bd->pci_dev, "start 2\n");
- /*
- * If the rxbuf is empty and we are not throttled, put as much
- * as we can directly into the linux TTY buffer.
- *
- */
- flip_len = TTY_FLIPBUF_SIZE;
-
- len = min(data_len, flip_len);
- len = min(len, (N_TTY_BUF_SIZE - 1) - tp->read_cnt);
- ld = tty_ldisc_ref(tp);
-
- /*
- * If we were unable to get a reference to the ld,
- * don't flush our buffer, and act like the ld doesn't
- * have any space to put the data right now.
- */
- if (!ld) {
- len = 0;
- } else {
- /*
- * If ld doesn't have a pointer to a receive_buf function,
- * flush the data, then act like the ld doesn't have any
- * space to put the data right now.
- */
- if (!ld->receive_buf) {
- ch->ch_r_head = ch->ch_r_tail;
- len = 0;
- }
- }
-
- if (len <= 0) {
+ if (data_len <= 0) {
spin_unlock_irqrestore(&ch->ch_lock, lock_flags);
jsm_printk(READ, INFO, &ch->ch_bd->pci_dev, "jsm_input 1\n");
- if (ld)
- tty_ldisc_deref(ld);
return;
}
- len = tty_buffer_request_room(tp, len);
+ len = tty_buffer_request_room(tp, data_len);
n = len;
/*
@@ -647,7 +614,7 @@
else if (*(ch->ch_equeue +tail +i) & UART_LSR_FE)
tty_insert_flip_char(tp, *(ch->ch_rqueue +tail +i), TTY_FRAME);
else
- tty_insert_flip_char(tp, *(ch->ch_rqueue +tail +i), TTY_NORMAL);
+ tty_insert_flip_char(tp, *(ch->ch_rqueue +tail +i), TTY_NORMAL);
}
} else {
tty_insert_flip_string(tp, ch->ch_rqueue + tail, s) ;
@@ -666,9 +633,6 @@
/* Tell the tty layer its okay to "eat" the data now */
tty_flip_buffer_push(tp);
- if (ld)
- tty_ldisc_deref(ld);
-
jsm_printk(IOCTL, INFO, &ch->ch_bd->pci_dev, "finish\n");
}
-
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