From 6664845cef13b0a224f43f6c46eddd0b3e018c04 Mon Sep 17 00:00:00 2001 From: Martin Schwidefsky Date: Tue, 16 Jun 2009 10:30:28 +0200 Subject: [S390] cio: force console function If something goes wrong in a suspend / resume cycle a ccw based console if very likely in the suspended state and cannot print anything. Introduce ccw_device_force_console to force the wake up of the console device to be able to print the oops message. The console device drivers should use this function only if the system paniced. Signed-off-by: Martin Schwidefsky --- drivers/s390/cio/device.c | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'drivers/s390') diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c index 64bd79ac25a7..3c57c1a18bb8 100644 --- a/drivers/s390/cio/device.c +++ b/drivers/s390/cio/device.c @@ -1789,6 +1789,15 @@ ccw_device_probe_console(void) return &console_cdev; } +static int ccw_device_pm_restore(struct device *dev); + +int ccw_device_force_console(void) +{ + if (!console_cdev_in_use) + return -ENODEV; + return ccw_device_pm_restore(&console_cdev.dev); +} +EXPORT_SYMBOL_GPL(ccw_device_force_console); const char *cio_get_console_cdev_name(struct subchannel *sch) { -- cgit v1.2.3