[PATCH] TTY layer buffering revamp

[deliverable/linux.git] / drivers / usb / serial / cypress_m8.c

diff --git a/drivers/usb/serial/cypress_m8.c b/drivers/usb/serial/cypress_m8.c
index 4e9637eb6137836b3e62a0b7eb2e39aee099cf32..68067fe117a46ab25d0ce71695643095eea2fdc3 100644 (file)
--- a/drivers/usb/serial/cypress_m8.c
+++ b/drivers/usb/serial/cypress_m8.c
@@ -1263,12 +1263,10 @@ static void cypress_read_int_callback(struct urb *urb, struct pt_regs *regs)
 
        /* process read if there is data other than line status */
        if (tty && (bytes > i)) {
+               bytes = tty_buffer_request_room(tty, bytes);
                for (; i < bytes ; ++i) {
                        dbg("pushing byte number %d - %d - %c", i, data[i],
                                        data[i]);
-                       if(tty->flip.count >= TTY_FLIPBUF_SIZE) {
-                               tty_flip_buffer_push(tty);
-                       }
                        tty_insert_flip_char(tty, data[i], tty_flag);
                }
                tty_flip_buffer_push(port->tty);