diff options
| author | Dmitry Torokhov <dtor@insightbb.com> | 2006-09-19 01:56:44 -0400 |
|---|---|---|
| committer | Dmitry Torokhov <dtor@insightbb.com> | 2006-09-19 01:56:44 -0400 |
| commit | 0612ec48762bf8712db1925b2e67246d2237ebab (patch) | |
| tree | 01b0d69c9c9915015c0f23ad4263646dd5413e99 /drivers/s390/cio/css.c | |
| parent | 4263cf0fac28122c8381b6f4f9441a43cd93c81f (diff) | |
| parent | 47a5c6fa0e204a2b63309c648bb2fde36836c826 (diff) | |
| download | kernel-crypto-0612ec48762bf8712db1925b2e67246d2237ebab.tar.gz kernel-crypto-0612ec48762bf8712db1925b2e67246d2237ebab.tar.xz kernel-crypto-0612ec48762bf8712db1925b2e67246d2237ebab.zip | |
Merge rsync://rsync.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Diffstat (limited to 'drivers/s390/cio/css.c')
| -rw-r--r-- | drivers/s390/cio/css.c | 36 |
1 files changed, 30 insertions, 6 deletions
diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c index 1d3be80797f..13eeea3d547 100644 --- a/drivers/s390/cio/css.c +++ b/drivers/s390/cio/css.c @@ -108,6 +108,24 @@ css_subchannel_release(struct device *dev) extern int css_get_ssd_info(struct subchannel *sch); + +int css_sch_device_register(struct subchannel *sch) +{ + int ret; + + mutex_lock(&sch->reg_mutex); + ret = device_register(&sch->dev); + mutex_unlock(&sch->reg_mutex); + return ret; +} + +void css_sch_device_unregister(struct subchannel *sch) +{ + mutex_lock(&sch->reg_mutex); + device_unregister(&sch->dev); + mutex_unlock(&sch->reg_mutex); +} + static int css_register_subchannel(struct subchannel *sch) { @@ -119,7 +137,7 @@ css_register_subchannel(struct subchannel *sch) sch->dev.release = &css_subchannel_release; /* make it known to the system */ - ret = device_register(&sch->dev); + ret = css_sch_device_register(sch); if (ret) printk (KERN_WARNING "%s: could not register %s\n", __func__, sch->dev.bus_id); @@ -250,7 +268,7 @@ css_evaluate_subchannel(struct subchannel_id schid, int slow) * The device will be killed automatically. */ cio_disable_subchannel(sch); - device_unregister(&sch->dev); + css_sch_device_unregister(sch); /* Reset intparm to zeroes. */ sch->schib.pmcw.intparm = 0; cio_modify(sch); @@ -264,7 +282,7 @@ css_evaluate_subchannel(struct subchannel_id schid, int slow) * away in any case. */ if (!disc) { - device_unregister(&sch->dev); + css_sch_device_unregister(sch); /* Reset intparm to zeroes. */ sch->schib.pmcw.intparm = 0; cio_modify(sch); @@ -605,9 +623,13 @@ init_channel_subsystem (void) ret = device_register(&css[i]->device); if (ret) goto out_free; - if (css_characteristics_avail && css_chsc_characteristics.secm) - device_create_file(&css[i]->device, - &dev_attr_cm_enable); + if (css_characteristics_avail && + css_chsc_characteristics.secm) { + ret = device_create_file(&css[i]->device, + &dev_attr_cm_enable); + if (ret) + goto out_device; + } } css_init_done = 1; @@ -615,6 +637,8 @@ init_channel_subsystem (void) for_each_subchannel(__init_channel_subsystem, NULL); return 0; +out_device: + device_unregister(&css[i]->device); out_free: kfree(css[i]); out_unregister: |