diff options
Diffstat (limited to 'drivers/s390/cio/chp.c')
-rw-r--r-- | drivers/s390/cio/chp.c | 34 |
1 files changed, 29 insertions, 5 deletions
diff --git a/drivers/s390/cio/chp.c b/drivers/s390/cio/chp.c index f95b452b8bbc..afbdee74147d 100644 --- a/drivers/s390/cio/chp.c +++ b/drivers/s390/cio/chp.c @@ -384,6 +384,28 @@ static ssize_t chp_chid_external_show(struct device *dev, } static DEVICE_ATTR(chid_external, 0444, chp_chid_external_show, NULL); +static ssize_t util_string_read(struct file *filp, struct kobject *kobj, + struct bin_attribute *attr, char *buf, + loff_t off, size_t count) +{ + struct channel_path *chp = to_channelpath(kobj_to_dev(kobj)); + ssize_t rc; + + mutex_lock(&chp->lock); + rc = memory_read_from_buffer(buf, count, &off, chp->desc_fmt3.util_str, + sizeof(chp->desc_fmt3.util_str)); + mutex_unlock(&chp->lock); + + return rc; +} +static BIN_ATTR_RO(util_string, + sizeof(((struct channel_path_desc_fmt3 *)0)->util_str)); + +static struct bin_attribute *chp_bin_attrs[] = { + &bin_attr_util_string, + NULL, +}; + static struct attribute *chp_attrs[] = { &dev_attr_status.attr, &dev_attr_configure.attr, @@ -396,6 +418,7 @@ static struct attribute *chp_attrs[] = { }; static struct attribute_group chp_attr_group = { .attrs = chp_attrs, + .bin_attrs = chp_bin_attrs, }; static const struct attribute_group *chp_attr_groups[] = { &chp_attr_group, @@ -422,7 +445,7 @@ int chp_update_desc(struct channel_path *chp) { int rc; - rc = chsc_determine_base_channel_path_desc(chp->chpid, &chp->desc); + rc = chsc_determine_fmt0_channel_path_desc(chp->chpid, &chp->desc); if (rc) return rc; @@ -431,6 +454,7 @@ int chp_update_desc(struct channel_path *chp) * hypervisors implement the required chsc commands. */ chsc_determine_fmt1_channel_path_desc(chp->chpid, &chp->desc_fmt1); + chsc_determine_fmt3_channel_path_desc(chp->chpid, &chp->desc_fmt3); chsc_get_channel_measurement_chars(chp); return 0; @@ -506,20 +530,20 @@ out: * On success return a newly allocated copy of the channel-path description * data associated with the given channel-path ID. Return %NULL on error. */ -struct channel_path_desc *chp_get_chp_desc(struct chp_id chpid) +struct channel_path_desc_fmt0 *chp_get_chp_desc(struct chp_id chpid) { struct channel_path *chp; - struct channel_path_desc *desc; + struct channel_path_desc_fmt0 *desc; chp = chpid_to_chp(chpid); if (!chp) return NULL; - desc = kmalloc(sizeof(struct channel_path_desc), GFP_KERNEL); + desc = kmalloc(sizeof(*desc), GFP_KERNEL); if (!desc) return NULL; mutex_lock(&chp->lock); - memcpy(desc, &chp->desc, sizeof(struct channel_path_desc)); + memcpy(desc, &chp->desc, sizeof(*desc)); mutex_unlock(&chp->lock); return desc; } |