diff options
Diffstat (limited to 'drivers/char')
| -rw-r--r-- | drivers/char/Kconfig | 6 | ||||
| -rw-r--r-- | drivers/char/hvc_xen.c | 25 |
2 files changed, 27 insertions, 4 deletions
diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig index 08a6f50ae79..6aad99ec4e0 100644 --- a/drivers/char/Kconfig +++ b/drivers/char/Kconfig @@ -323,7 +323,7 @@ config SPECIALIX config SX tristate "Specialix SX (and SI) card support" - depends on SERIAL_NONSTANDARD && (PCI || EISA || ISA) + depends on SERIAL_NONSTANDARD && (PCI || EISA || ISA) && BROKEN help This is a driver for the SX and SI multiport serial cards. Please read the file <file:Documentation/serial/sx.txt> for details. @@ -334,7 +334,7 @@ config SX config RIO tristate "Specialix RIO system support" - depends on SERIAL_NONSTANDARD + depends on SERIAL_NONSTANDARD && BROKEN help This is a driver for the Specialix RIO, a smart serial card which drives an outboard box that can support up to 128 ports. Product @@ -395,7 +395,7 @@ config NOZOMI config A2232 tristate "Commodore A2232 serial support (EXPERIMENTAL)" - depends on EXPERIMENTAL && ZORRO && BROKEN_ON_SMP + depends on EXPERIMENTAL && ZORRO && BROKEN ---help--- This option supports the 2232 7-port serial card shipped with the Amiga 2000 and other Zorro-bus machines, dating from 1989. At diff --git a/drivers/char/hvc_xen.c b/drivers/char/hvc_xen.c index eba999f8598..a6ee32b599a 100644 --- a/drivers/char/hvc_xen.c +++ b/drivers/char/hvc_xen.c @@ -55,7 +55,7 @@ static inline void notify_daemon(void) notify_remote_via_evtchn(xen_start_info->console.domU.evtchn); } -static int write_console(uint32_t vtermno, const char *data, int len) +static int __write_console(const char *data, int len) { struct xencons_interface *intf = xencons_interface(); XENCONS_RING_IDX cons, prod; @@ -76,6 +76,29 @@ static int write_console(uint32_t vtermno, const char *data, int len) return sent; } +static int write_console(uint32_t vtermno, const char *data, int len) +{ + int ret = len; + + /* + * Make sure the whole buffer is emitted, polling if + * necessary. We don't ever want to rely on the hvc daemon + * because the most interesting console output is when the + * kernel is crippled. + */ + while (len) { + int sent = __write_console(data, len); + + data += sent; + len -= sent; + + if (unlikely(len)) + HYPERVISOR_sched_op(SCHEDOP_yield, NULL); + } + + return ret; +} + static int read_console(uint32_t vtermno, char *buf, int len) { struct xencons_interface *intf = xencons_interface(); |