Anton Blanchard 19df9abdd3 powerpc/pseries: Fix hvterm_raw_get_chars to accept < 16 chars, fixing xmon ...

commit 4d2bb3f50036 (powerpc/pseries: Re-implement HVSI as part of
hvc_vio) changed udbg_getc to be based on hvterm_raw_get_chars.
Unfortunately hvterm_raw_get_chars returns -EAGAIN if you ask
for anything less than 16 characters. As a result xmon no longer
accepts input and prints a stream of junk to the screen.

The recent change highlights a problem that xmon on pseries VIO
has had all along, that it can drop input characters. The issue
is the hypervisor call does not take a count argument and can
return up to 16 characters.

This patch adds a per vterm buffer that we copy input data into
and give it out as requested.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

2011-07-19 15:13:07 +10:00

..

hvc_beat.c

tty: move hvc drivers to drivers/tty/hvc/

2011-01-13 12:03:00 -08:00

hvc_bfin_jtag.c

hvc: add Blackfin JTAG console support

2011-02-17 11:12:40 -08:00

hvc_console.c

hvc_console: Improve tty/console put_chars handling

2011-07-19 15:13:05 +10:00

hvc_console.h

powerpc/pseries: Re-implement HVSI as part of hvc_vio

2011-06-29 17:48:35 +10:00

hvc_dcc.c

hvc_dcc: Simplify assembly for v6 and v7 ARM

2011-02-03 16:05:43 -08:00

hvc_irq.c

tty: move hvc drivers to drivers/tty/hvc/

2011-01-13 12:03:00 -08:00

hvc_iseries.c

tty: move hvc drivers to drivers/tty/hvc/

2011-01-13 12:03:00 -08:00

hvc_iucv.c

Fix common misspellings

2011-03-31 11:26:23 -03:00

hvc_rtas.c

tty: move hvc drivers to drivers/tty/hvc/

2011-01-13 12:03:00 -08:00

hvc_tile.c

tty: move hvc drivers to drivers/tty/hvc/

2011-01-13 12:03:00 -08:00

hvc_udbg.c

tty: move hvc drivers to drivers/tty/hvc/

2011-01-13 12:03:00 -08:00

hvc_vio.c

powerpc/pseries: Fix hvterm_raw_get_chars to accept < 16 chars, fixing xmon

2011-07-19 15:13:07 +10:00

hvc_xen.c

drivers: Final irq namespace conversion

2011-03-29 14:48:19 +02:00

hvcs.c

Fix common misspellings

2011-03-31 11:26:23 -03:00

hvsi_lib.c

powerpc/hvsi: Fix conflict with old HVSI driver

2011-07-01 13:10:21 +10:00

hvsi.c

powerpc/pseries: Factor HVSI header struct in packet definitions

2011-06-29 17:48:30 +10:00

Kconfig

powerpc/pseries: Re-implement HVSI as part of hvc_vio

2011-06-29 17:48:35 +10:00

Makefile

powerpc/pseries: Move hvsi support into a library

2011-06-29 17:48:37 +10:00