[PATCH] Fix some ucLinux breakage from the tty updates
Alan Cox [Fri, 3 Feb 2006 11:04:08 +0000 (03:04 -0800)]
Breakage reported by Adrian Bunk

Untested (no hardware)

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/v850/kernel/simcons.c
arch/xtensa/platform-iss/console.c
drivers/serial/mcfserial.c

index 7f0efaa..3975aa0 100644 (file)
@@ -117,6 +117,7 @@ late_initcall(simcons_tty_init);
    tty driver.  */
 void simcons_poll_tty (struct tty_struct *tty)
 {
+       char buf[32];   /* Not the nicest way to do it but I need it correct first */
        int flip = 0, send_break = 0;
        struct pollfd pfd;
        pfd.fd = 0;
@@ -124,21 +125,15 @@ void simcons_poll_tty (struct tty_struct *tty)
 
        if (V850_SIM_SYSCALL (poll, &pfd, 1, 0) > 0) {
                if (pfd.revents & POLLIN) {
-                       int left = TTY_FLIPBUF_SIZE - tty->flip.count;
-
-                       if (left > 0) {
-                               unsigned char *buf = tty->flip.char_buf_ptr;
-                               int rd = V850_SIM_SYSCALL (read, 0, buf, left);
-
-                               if (rd > 0) {
-                                       tty->flip.count += rd;
-                                       tty->flip.char_buf_ptr += rd;
-                                       memset (tty->flip.flag_buf_ptr, 0, rd);
-                                       tty->flip.flag_buf_ptr += rd;
-                                       flip = 1;
-                               } else
-                                       send_break = 1;
-                       }
+                       /* Real block hardware knows the transfer size before
+                          transfer so the new tty buffering doesn't try to handle
+                          this rather weird simulator specific case well */
+                       int rd = V850_SIM_SYSCALL (read, 0, buf, 32);
+                       if (rd > 0) {
+                               tty_insert_flip_string(tty, buf, rd);
+                               flip = 1;
+                       } else
+                               send_break = 1;
                } else if (pfd.revents & POLLERR)
                        send_break = 1;
        }
index 4fbddf9..94fdfe4 100644 (file)
@@ -128,9 +128,7 @@ static void rs_poll(unsigned long priv)
 
        while (__simc(SYS_select_one, 0, XTISS_SELECT_ONE_READ, (int)&tv,0,0)){
                __simc (SYS_read, 0, (unsigned long)&c, 1, 0, 0);
-               tty->flip.count++;
-               *tty->flip.char_buf_ptr++ = c;
-               *tty->flip.flag_buf_ptr++ = TTY_NORMAL;
+               tty_insert_flip_char(tty, c, TTY_NORMAL);
                i++;
        }
 
index d957a3a..0ef648f 100644 (file)
@@ -350,8 +350,7 @@ static inline void receive_chars(struct mcf_serial *info)
                }
                tty_insert_flip_char(tty, ch, flag);
        }
-
-       schedule_work(&tty->flip.work);
+       tty_flip_buffer_push(tty);
        return;
 }