From 8145916996b91d42b8bb4b0fcd508af295222c7c Mon Sep 17 00:00:00 2001 From: Alan Cox Date: Fri, 3 Feb 2006 03:04:08 -0800 Subject: [PATCH] Fix some ucLinux breakage from the tty updates Breakage reported by Adrian Bunk Untested (no hardware) Signed-off-by: Alan Cox Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/v850/kernel/simcons.c | 25 ++++++++++--------------- 1 file changed, 10 insertions(+), 15 deletions(-) (limited to 'arch/v850') diff --git a/arch/v850/kernel/simcons.c b/arch/v850/kernel/simcons.c index 7f0efaa025c..3975aa02cef 100644 --- a/arch/v850/kernel/simcons.c +++ b/arch/v850/kernel/simcons.c @@ -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; } -- cgit v1.2.3-18-g5258