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authorEduardo Valentin <eduardo.valentin@ti.com>2013-01-02 15:29:39 +0000
committerZhang Rui <rui.zhang@intel.com>2013-01-16 10:46:46 +0800
commit8ab3e6a08a98f7ff18c6814065eb30ba2e000233 (patch)
tree79653389ffbff8e748815ca13a7a925e585ca2a9
parentc076fc42a4d6c51d6422aaf9f6626bf1adf983e7 (diff)
thermal: Use thermal zone device id in netlink messages
This patch changes the function thermal_generate_netlink_event to receive a thermal zone device instead of a originator id. This way, the messages will always be bound to a thermal zone. Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com> Reviewed-by: Durgadoss R <durgadoss.r@intel.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com>
-rw-r--r--Documentation/thermal/sysfs-api.txt5
-rw-r--r--drivers/thermal/thermal_sys.c8
-rw-r--r--include/linux/thermal.h6
3 files changed, 13 insertions, 6 deletions
diff --git a/Documentation/thermal/sysfs-api.txt b/Documentation/thermal/sysfs-api.txt
index 88c02334e356..526d4b90d6c1 100644
--- a/Documentation/thermal/sysfs-api.txt
+++ b/Documentation/thermal/sysfs-api.txt
@@ -329,8 +329,9 @@ The framework includes a simple notification mechanism, in the form of a
netlink event. Netlink socket initialization is done during the _init_
of the framework. Drivers which intend to use the notification mechanism
just need to call thermal_generate_netlink_event() with two arguments viz
-(originator, event). Typically the originator will be an integer assigned
-to a thermal_zone_device when it registers itself with the framework. The
+(originator, event). The originator is a pointer to struct thermal_zone_device
+from where the event has been originated. An integer which represents the
+thermal zone device will be used in the message to identify the zone. The
event will be one of:{THERMAL_AUX0, THERMAL_AUX1, THERMAL_CRITICAL,
THERMAL_DEV_FAULT}. Notification can be sent when the current temperature
crosses any of the configured thresholds.
diff --git a/drivers/thermal/thermal_sys.c b/drivers/thermal/thermal_sys.c
index 8c8ce806180f..d85f51f433be 100644
--- a/drivers/thermal/thermal_sys.c
+++ b/drivers/thermal/thermal_sys.c
@@ -1711,7 +1711,8 @@ static struct genl_multicast_group thermal_event_mcgrp = {
.name = THERMAL_GENL_MCAST_GROUP_NAME,
};
-int thermal_generate_netlink_event(u32 orig, enum events event)
+int thermal_generate_netlink_event(struct thermal_zone_device *tz,
+ enum events event)
{
struct sk_buff *skb;
struct nlattr *attr;
@@ -1721,6 +1722,9 @@ int thermal_generate_netlink_event(u32 orig, enum events event)
int result;
static unsigned int thermal_event_seqnum;
+ if (!tz)
+ return -EINVAL;
+
/* allocate memory */
size = nla_total_size(sizeof(struct thermal_genl_event)) +
nla_total_size(0);
@@ -1755,7 +1759,7 @@ int thermal_generate_netlink_event(u32 orig, enum events event)
memset(thermal_event, 0, sizeof(struct thermal_genl_event));
- thermal_event->orig = orig;
+ thermal_event->orig = tz->id;
thermal_event->event = event;
/* send multicast genetlink message */
diff --git a/include/linux/thermal.h b/include/linux/thermal.h
index 883bcda7e1e4..9b78f8c6f773 100644
--- a/include/linux/thermal.h
+++ b/include/linux/thermal.h
@@ -246,9 +246,11 @@ int thermal_register_governor(struct thermal_governor *);
void thermal_unregister_governor(struct thermal_governor *);
#ifdef CONFIG_NET
-extern int thermal_generate_netlink_event(u32 orig, enum events event);
+extern int thermal_generate_netlink_event(struct thermal_zone_device *tz,
+ enum events event);
#else
-static inline int thermal_generate_netlink_event(u32 orig, enum events event)
+static int thermal_generate_netlink_event(struct thermal_zone_device *tz,
+ enum events event)
{
return 0;
}