diff options
Diffstat (limited to 'drivers/s390/cio/css.c')
| -rw-r--r-- | drivers/s390/cio/css.c | 50 |
1 files changed, 21 insertions, 29 deletions
diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c index ca8e1c240c3c..a5050e217150 100644 --- a/drivers/s390/cio/css.c +++ b/drivers/s390/cio/css.c @@ -1,7 +1,7 @@ /* * driver for channel subsystem * - * Copyright IBM Corp. 2002, 2009 + * Copyright IBM Corp. 2002, 2010 * * Author(s): Arnd Bergmann (arndb@de.ibm.com) * Cornelia Huck (cornelia.huck@de.ibm.com) @@ -577,7 +577,7 @@ static int __unset_registered(struct device *dev, void *data) return 0; } -void css_schedule_eval_all_unreg(void) +static void css_schedule_eval_all_unreg(void) { unsigned long flags; struct idset *unreg_set; @@ -790,7 +790,6 @@ static struct notifier_block css_reboot_notifier = { static int css_power_event(struct notifier_block *this, unsigned long event, void *ptr) { - void *secm_area; int ret, i; switch (event) { @@ -806,15 +805,8 @@ static int css_power_event(struct notifier_block *this, unsigned long event, mutex_unlock(&css->mutex); continue; } - secm_area = (void *)get_zeroed_page(GFP_KERNEL | - GFP_DMA); - if (secm_area) { - if (__chsc_do_secm(css, 0, secm_area)) - ret = NOTIFY_BAD; - free_page((unsigned long)secm_area); - } else + if (__chsc_do_secm(css, 0)) ret = NOTIFY_BAD; - mutex_unlock(&css->mutex); } break; @@ -830,15 +822,8 @@ static int css_power_event(struct notifier_block *this, unsigned long event, mutex_unlock(&css->mutex); continue; } - secm_area = (void *)get_zeroed_page(GFP_KERNEL | - GFP_DMA); - if (secm_area) { - if (__chsc_do_secm(css, 1, secm_area)) - ret = NOTIFY_BAD; - free_page((unsigned long)secm_area); - } else + if (__chsc_do_secm(css, 1)) ret = NOTIFY_BAD; - mutex_unlock(&css->mutex); } /* search for subchannels, which appeared during hibernation */ @@ -863,14 +848,11 @@ static int __init css_bus_init(void) { int ret, i; - ret = chsc_determine_css_characteristics(); - if (ret == -ENOMEM) - goto out; - - ret = chsc_alloc_sei_area(); + ret = chsc_init(); if (ret) - goto out; + return ret; + chsc_determine_css_characteristics(); /* Try to enable MSS. */ ret = chsc_enable_facility(CHSC_SDA_OC_MSS); if (ret) @@ -956,9 +938,9 @@ out_unregister: } bus_unregister(&css_bus_type); out: - crw_unregister_handler(CRW_RSC_CSS); - chsc_free_sei_area(); + crw_unregister_handler(CRW_RSC_SCH); idset_free(slow_subchannel_set); + chsc_init_cleanup(); pr_alert("The CSS device driver initialization failed with " "errno=%d\n", ret); return ret; @@ -978,9 +960,9 @@ static void __init css_bus_cleanup(void) device_unregister(&css->device); } bus_unregister(&css_bus_type); - crw_unregister_handler(CRW_RSC_CSS); - chsc_free_sei_area(); + crw_unregister_handler(CRW_RSC_SCH); idset_free(slow_subchannel_set); + chsc_init_cleanup(); isc_unregister(IO_SCH_ISC); } @@ -1048,7 +1030,16 @@ subsys_initcall_sync(channel_subsystem_init_sync); void channel_subsystem_reinit(void) { + struct channel_path *chp; + struct chp_id chpid; + chsc_enable_facility(CHSC_SDA_OC_MSS); + chp_id_for_each(&chpid) { + chp = chpid_to_chp(chpid); + if (!chp) + continue; + chsc_determine_base_channel_path_desc(chpid, &chp->desc); + } } #ifdef CONFIG_PROC_FS @@ -1200,6 +1191,7 @@ static int css_pm_restore(struct device *dev) struct subchannel *sch = to_subchannel(dev); struct css_driver *drv; + css_update_ssd_info(sch); if (!sch->dev.driver) return 0; drv = to_cssdriver(sch->dev.driver); |