diff options
Diffstat (limited to 'drivers/s390')
| -rw-r--r-- | drivers/s390/cio/css.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c index 08f6e7b6c999..5d83dd471461 100644 --- a/drivers/s390/cio/css.c +++ b/drivers/s390/cio/css.c @@ -13,6 +13,7 @@ #include <linux/slab.h> #include <linux/errno.h> #include <linux/list.h> +#include <linux/reboot.h> #include "css.h" #include "cio.h" @@ -632,6 +633,29 @@ static int __init setup_css(int nr) return 0; } +static int css_reboot_event(struct notifier_block *this, + unsigned long event, + void *ptr) +{ + int ret, i; + + ret = NOTIFY_DONE; + for (i = 0; i <= __MAX_CSSID; i++) { + struct channel_subsystem *css; + + css = channel_subsystems[i]; + if (css->cm_enabled) + if (chsc_secm(css, 0)) + ret = NOTIFY_BAD; + } + + return ret; +} + +static struct notifier_block css_reboot_notifier = { + .notifier_call = css_reboot_event, +}; + /* * Now that the driver core is running, we can setup our channel subsystem. * The struct subchannel's are created during probing (except for the @@ -697,12 +721,17 @@ init_channel_subsystem (void) if (ret) goto out_file; } + ret = register_reboot_notifier(&css_reboot_notifier); + if (ret) + goto out_pseudo; css_init_done = 1; ctl_set_bit(6, 28); for_each_subchannel(__init_channel_subsystem, NULL); return 0; +out_pseudo: + device_unregister(&channel_subsystems[i]->pseudo_subchannel->dev); out_file: device_remove_file(&channel_subsystems[i]->device, &dev_attr_cm_enable); |