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authorAlan Cox <alan@lxorguk.ukuu.org.uk>2006-02-03 03:04:08 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-02-03 08:32:04 -0800
commit8145916996b91d42b8bb4b0fcd508af295222c7c (patch)
tree298ec43ab4e40888d142ffd5e84be67c80e07c9f /arch/v850
parent84542838a3829f34630c589c1eb570656c455a1c (diff)
downloadlinux-2.6.34-ux500-8145916996b91d42b8bb4b0fcd508af295222c7c.tar.gz
[PATCH] Fix some ucLinux breakage from the tty updates
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>
Diffstat (limited to 'arch/v850')
-rw-r--r--arch/v850/kernel/simcons.c25
1 files changed, 10 insertions, 15 deletions
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;
}