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hv: use dev_groups for device attributes

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This patch is the first in a series that moves the hv bus code to use the
dev_groups field instead of dev_attrs, as dev_attrs is going away in future
kernel releases.

It moves the id sysfs file to the dev_groups structure, and creates the needed
show/store functions, instead of relying on one "universal" function for this.
By doing this, it removes the need for this to be in a temporary structure.

Tested-by: "K. Y. Srinivasan" <kys@microsoft.com>
Cc: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Greg Kroah-Hartman 2013-09-13 11:32:49 -07:00
parent 7d19143fe6
commit 03f3a9107f
3 changed files with 18 additions and 7 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

1
drivers/hv/channel.c
View file

@ -69,7 +69,6 @@ void vmbus_get_debug_info(struct vmbus_channel *channel,
u8 monitor_group = (u8)channel->offermsg.monitorid / 32;
u8 monitor_offset = (u8)channel->offermsg.monitorid % 32;
debuginfo->relid = channel->offermsg.child_relid;
debuginfo->state = channel->state;
memcpy(&debuginfo->interfacetype,
&channel->offermsg.offer.if_type, sizeof(uuid_le));

23
drivers/hv/vmbus_drv.c
View file

@ -47,7 +47,6 @@ static struct completion probe_event;
static int irq;
struct hv_device_info {
u32 chn_id;
u32 chn_state;
uuid_le chn_type;
uuid_le chn_instance;
@ -83,7 +82,6 @@ static void get_channel_info(struct hv_device *device,
vmbus_get_debug_info(device->channel, &debug_info);
info->chn_id = debug_info.relid;
info->chn_state = debug_info.state;
memcpy(&info->chn_type, &debug_info.interfacetype,
sizeof(uuid_le));
@ -156,8 +154,6 @@ static ssize_t vmbus_show_device_attr(struct device *dev,
ret = sprintf(buf, "vmbus:%s\n", alias_name);
} else if (!strcmp(dev_attr->attr.name, "state")) {
ret = sprintf(buf, "%d\n", device_info->chn_state);
} else if (!strcmp(dev_attr->attr.name, "id")) {
ret = sprintf(buf, "%d\n", device_info->chn_id);
} else if (!strcmp(dev_attr->attr.name, "out_intr_mask")) {
ret = sprintf(buf, "%d\n", device_info->outbound.int_mask);
} else if (!strcmp(dev_attr->attr.name, "out_read_index")) {
@ -204,9 +200,25 @@ static ssize_t vmbus_show_device_attr(struct device *dev,
return ret;
}
static ssize_t id_show(struct device *dev, struct device_attribute *dev_attr,
char *buf)
{
struct hv_device *hv_dev = device_to_hv_device(dev);
if (!hv_dev->channel)
return -ENODEV;
return sprintf(buf, "%d\n", hv_dev->channel->offermsg.child_relid);
}
static DEVICE_ATTR_RO(id);
static struct attribute *vmbus_attrs[] = {
&dev_attr_id.attr,
NULL,
};
ATTRIBUTE_GROUPS(vmbus);
/* Set up per device attributes in /sys/bus/vmbus/devices/<bus device> */
static struct device_attribute vmbus_device_attrs[] = {
__ATTR(id, S_IRUGO, vmbus_show_device_attr, NULL),
__ATTR(state, S_IRUGO, vmbus_show_device_attr, NULL),
__ATTR(class_id, S_IRUGO, vmbus_show_device_attr, NULL),
__ATTR(device_id, S_IRUGO, vmbus_show_device_attr, NULL),
@ -384,6 +396,7 @@ static struct bus_type hv_bus = {
.probe = vmbus_probe,
.uevent = vmbus_uevent,
.dev_attrs = vmbus_device_attrs,
.dev_groups = vmbus_groups,
};
static const char *driver_name = "hyperv";

1
include/linux/hyperv.h
View file

@ -900,7 +900,6 @@ enum vmbus_channel_state {
};
struct vmbus_channel_debug_info {
u32 relid;
enum vmbus_channel_state state;
uuid_le interfacetype;
uuid_le interface_instance;