* [patch 2/6] Generic thermal management: use ERR_PTR for returning error
@ 2008-02-15 5:23 Thomas, Sujith
0 siblings, 0 replies; only message in thread
From: Thomas, Sujith @ 2008-02-15 5:23 UTC (permalink / raw)
To: Andrew Morton; +Cc: linux-kernel, linux-acpi, linux-pm, mingo
[-- Attachment #1: Type: text/plain, Size: 2934 bytes --]
From: Thomas Sujith <sujith.thomas@intel.com>
Need to return using ERR_PTR instead of NULL
in case of errors.
Signed-off-by: Thomas Sujith <sujith.thomas@intel.com>
---
drivers/thermal/thermal.c | 26 +++++++++++++-------------
1 files changed, 13 insertions(+), 13 deletions(-)
Index: linux-2.6.24/drivers/thermal/thermal.c
===================================================================
--- linux-2.6.24.orig/drivers/thermal/thermal.c
+++ linux-2.6.24/drivers/thermal/thermal.c
@@ -448,20 +448,20 @@ struct thermal_cooling_device *thermal_c
int result;
if (strlen(type) >= THERMAL_NAME_LENGTH)
- return NULL;
+ return ERR_PTR(-EINVAL);
if (!ops || !ops->get_max_state || !ops->get_cur_state ||
!ops->set_cur_state)
- return NULL;
+ return ERR_PTR(-EINVAL);
cdev = kzalloc(sizeof(struct thermal_cooling_device),
GFP_KERNEL);
if (!cdev)
- return NULL;
+ return ERR_PTR(-ENOMEM);
result = get_idr(&thermal_cdev_idr, &thermal_idr_lock,
&cdev->id);
if (result) {
kfree(cdev);
- return NULL;
+ return ERR_PTR(result);
}
strcpy(cdev->type, type);
@@ -473,7 +473,7 @@ struct thermal_cooling_device *thermal_c
if (result) {
release_idr(&thermal_cdev_idr, &thermal_idr_lock,
cdev->id);
kfree(cdev);
- return NULL;
+ return ERR_PTR(result);
}
/* sys I/F */
@@ -509,7 +509,7 @@ struct thermal_cooling_device *thermal_c
unregister:
release_idr(&thermal_cdev_idr, &thermal_idr_lock, cdev->id);
device_unregister(&cdev->device);
- return NULL;
+ return ERR_PTR(result);
}
EXPORT_SYMBOL(thermal_cooling_device_register);
@@ -581,17 +581,17 @@ struct thermal_zone_device *thermal_zone
int count;
if (strlen(type) >= THERMAL_NAME_LENGTH)
- return NULL;
+ return ERR_PTR(-EINVAL);
if (trips > THERMAL_MAX_TRIPS || trips < 0)
- return NULL;
+ return ERR_PTR(-EINVAL);
if (!ops || !ops->get_temp)
- return NULL;
+ return ERR_PTR(-EINVAL);
tz = kzalloc(sizeof(struct thermal_zone_device), GFP_KERNEL);
if (!tz)
- return NULL;
+ return ERR_PTR(-ENOMEM);
INIT_LIST_HEAD(&tz->cooling_devices);
idr_init(&tz->idr);
@@ -599,7 +599,7 @@ struct thermal_zone_device *thermal_zone
result = get_idr(&thermal_tz_idr, &thermal_idr_lock, &tz->id);
if (result) {
kfree(tz);
- return NULL;
+ return ERR_PTR(result);
}
strcpy(tz->type, type);
@@ -612,7 +612,7 @@ struct thermal_zone_device *thermal_zone
if (result) {
release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id);
kfree(tz);
- return NULL;
+ return ERR_PTR(result);
}
/* sys I/F */
@@ -654,7 +654,7 @@ struct thermal_zone_device *thermal_zone
unregister:
release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id);
device_unregister(&tz->device);
- return NULL;
+ return ERR_PTR(result);
}
EXPORT_SYMBOL(thermal_zone_device_register);
[-- Attachment #2: [patch 2 of 6] Thermal Management - return using ERR_PTR --]
[-- Type: application/octet-stream, Size: 2824 bytes --]
From: Thomas Sujith <sujith.thomas@intel.com>
Need to return using ERR_PTR instead of NULL
in case of errors.
Signed-off-by: Thomas Sujith <sujith.thomas@intel.com>
---
drivers/thermal/thermal.c | 26 +++++++++++++-------------
1 files changed, 13 insertions(+), 13 deletions(-)
Index: linux-2.6.24/drivers/thermal/thermal.c
===================================================================
--- linux-2.6.24.orig/drivers/thermal/thermal.c
+++ linux-2.6.24/drivers/thermal/thermal.c
@@ -448,20 +448,20 @@ struct thermal_cooling_device *thermal_c
int result;
if (strlen(type) >= THERMAL_NAME_LENGTH)
- return NULL;
+ return ERR_PTR(-EINVAL);
if (!ops || !ops->get_max_state || !ops->get_cur_state ||
!ops->set_cur_state)
- return NULL;
+ return ERR_PTR(-EINVAL);
cdev = kzalloc(sizeof(struct thermal_cooling_device), GFP_KERNEL);
if (!cdev)
- return NULL;
+ return ERR_PTR(-ENOMEM);
result = get_idr(&thermal_cdev_idr, &thermal_idr_lock, &cdev->id);
if (result) {
kfree(cdev);
- return NULL;
+ return ERR_PTR(result);
}
strcpy(cdev->type, type);
@@ -473,7 +473,7 @@ struct thermal_cooling_device *thermal_c
if (result) {
release_idr(&thermal_cdev_idr, &thermal_idr_lock, cdev->id);
kfree(cdev);
- return NULL;
+ return ERR_PTR(result);
}
/* sys I/F */
@@ -509,7 +509,7 @@ struct thermal_cooling_device *thermal_c
unregister:
release_idr(&thermal_cdev_idr, &thermal_idr_lock, cdev->id);
device_unregister(&cdev->device);
- return NULL;
+ return ERR_PTR(result);
}
EXPORT_SYMBOL(thermal_cooling_device_register);
@@ -581,17 +581,17 @@ struct thermal_zone_device *thermal_zone
int count;
if (strlen(type) >= THERMAL_NAME_LENGTH)
- return NULL;
+ return ERR_PTR(-EINVAL);
if (trips > THERMAL_MAX_TRIPS || trips < 0)
- return NULL;
+ return ERR_PTR(-EINVAL);
if (!ops || !ops->get_temp)
- return NULL;
+ return ERR_PTR(-EINVAL);
tz = kzalloc(sizeof(struct thermal_zone_device), GFP_KERNEL);
if (!tz)
- return NULL;
+ return ERR_PTR(-ENOMEM);
INIT_LIST_HEAD(&tz->cooling_devices);
idr_init(&tz->idr);
@@ -599,7 +599,7 @@ struct thermal_zone_device *thermal_zone
result = get_idr(&thermal_tz_idr, &thermal_idr_lock, &tz->id);
if (result) {
kfree(tz);
- return NULL;
+ return ERR_PTR(result);
}
strcpy(tz->type, type);
@@ -612,7 +612,7 @@ struct thermal_zone_device *thermal_zone
if (result) {
release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id);
kfree(tz);
- return NULL;
+ return ERR_PTR(result);
}
/* sys I/F */
@@ -654,7 +654,7 @@ struct thermal_zone_device *thermal_zone
unregister:
release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id);
device_unregister(&tz->device);
- return NULL;
+ return ERR_PTR(result);
}
EXPORT_SYMBOL(thermal_zone_device_register);
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