diff options
| author | Eduardo Valentin <edubezval@gmail.com> | 2016-11-07 21:08:39 -0800 |
|---|---|---|
| committer | Zhang Rui <rui.zhang@intel.com> | 2016-11-23 10:06:12 +0800 |
| commit | 54fa38cc2eda43599b51695f9918208e7250ac46 (patch) | |
| tree | 4a0a635b5402c8c272a6df32f63081e52b7b2119 /drivers/thermal/thermal_core.c | |
| parent | 23400ac997062647f2b63c82030d189671b1effe (diff) | |
| download | op-kernel-dev-54fa38cc2eda43599b51695f9918208e7250ac46.zip op-kernel-dev-54fa38cc2eda43599b51695f9918208e7250ac46.tar.gz | |
thermal: core: prevent zones with no types to be registered
There are APIs that rely on tz->type. This patch
prevent thermal zones without it to be registered.
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Diffstat (limited to 'drivers/thermal/thermal_core.c')
| -rw-r--r-- | drivers/thermal/thermal_core.c | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c index 226b0b4ac..ec0d158 100644 --- a/drivers/thermal/thermal_core.c +++ b/drivers/thermal/thermal_core.c @@ -1873,6 +1873,9 @@ struct thermal_zone_device *thermal_zone_device_register(const char *type, int passive = 0; struct thermal_governor *governor; + if (!type || strlen(type) == 0) + return ERR_PTR(-EINVAL); + if (type && strlen(type) >= THERMAL_NAME_LENGTH) return ERR_PTR(-EINVAL); @@ -1898,7 +1901,7 @@ struct thermal_zone_device *thermal_zone_device_register(const char *type, return ERR_PTR(result); } - strlcpy(tz->type, type ? : "", sizeof(tz->type)); + strlcpy(tz->type, type, sizeof(tz->type)); tz->ops = ops; tz->tzp = tzp; tz->device.class = &thermal_class; @@ -1918,11 +1921,9 @@ struct thermal_zone_device *thermal_zone_device_register(const char *type, } /* sys I/F */ - if (type) { - result = device_create_file(&tz->device, &dev_attr_type); - if (result) - goto unregister; - } + result = device_create_file(&tz->device, &dev_attr_type); + if (result) + goto unregister; result = device_create_file(&tz->device, &dev_attr_temp); if (result) @@ -2071,8 +2072,7 @@ void thermal_zone_device_unregister(struct thermal_zone_device *tz) thermal_zone_device_set_polling(tz, 0); - if (tz->type[0]) - device_remove_file(&tz->device, &dev_attr_type); + device_remove_file(&tz->device, &dev_attr_type); device_remove_file(&tz->device, &dev_attr_temp); if (tz->ops->get_mode) device_remove_file(&tz->device, &dev_attr_mode); |
