[PATCH] m68k: dio - kill warn_unused_result warnings

Geert Uytterhoeven
2009-01-02T10:41:41Z

warning: ignoring return value of 'device_register', declared with attribute
warn_unused_result
warning: ignoring return value of 'device_create_file', declared with
attribute warn_unused_result

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Philip Blundell <philb@gnu.org>
---
drivers/dio/dio-sysfs.c | 16 ++++++++++------
drivers/dio/dio.c | 18 +++++++++++++++---
include/linux/dio.h | 2 +-
3 files changed, 26 insertions(+), 10 deletions(-)

diff --git a/drivers/dio/dio-sysfs.c b/drivers/dio/dio-sysfs.c
index f464630..91d5f4d 100644
--- a/drivers/dio/dio-sysfs.c
+++ b/drivers/dio/dio-sysfs.c
@@ -63,15 +63,19 @@ static ssize_t dio_show_resource(struct device *dev, struct device_attribute *at
}
static DEVICE_ATTR(resource, S_IRUGO, dio_show_resource, NULL);

-void dio_create_sysfs_dev_files(struct dio_dev *d)
+int dio_create_sysfs_dev_files(struct dio_dev *d)
{
struct device *dev = &d->dev;
+ int error;

/* current configuration's attributes */
- device_create_file(dev, &dev_attr_id);
- device_create_file(dev, &dev_attr_ipl);
- device_create_file(dev, &dev_attr_secid);
- device_create_file(dev, &dev_attr_name);
- device_create_file(dev, &dev_attr_resource);
+ if ((error = device_create_file(dev, &dev_attr_id)) ||
+ (error = device_create_file(dev, &dev_attr_ipl)) ||
+ (error = device_create_file(dev, &dev_attr_secid)) ||
+ (error = device_create_file(dev, &dev_attr_name)) ||
+ (error = device_create_file(dev, &dev_attr_resource)))
+ return error;
+
+ return 0;
}

diff --git a/drivers/dio/dio.c b/drivers/dio/dio.c
index 07f274f..10c3c49 100644
--- a/drivers/dio/dio.c
+++ b/drivers/dio/dio.c
@@ -173,6 +173,7 @@ static int __init dio_init(void)
mm_segment_t fs;
int i;
struct dio_dev *dev;
+ int error;

if (!MACH_IS_HP300)
return 0;
@@ -182,7 +183,11 @@ static int __init dio_init(void)
/* Initialize the DIO bus */
INIT_LIST_HEAD(&dio_bus.devices);
strcpy(dio_bus.dev.bus_id, "dio");
- device_register(&dio_bus.dev);
+ error = device_register(&dio_bus.dev);
+ if (error) {
+ pr_err("DIO: Error registering dio_bus\n");
+ return error;
+ }

/* Request all resources */
dio_bus.num_resources = (hp300_model == HP_320 ? 1 : 2);
@@ -252,8 +257,15 @@ static int __init dio_init(void)

if (scode >= DIOII_SCBASE)
iounmap(va);
- device_register(&dev->dev);
- dio_create_sysfs_dev_files(dev);
+ error = device_register(&dev->dev);
+ if (error) {
+ pr_err("DIO: Error registering device %s\n",
+ dev->name);
+ continue;
+ }
+ error = dio_create_sysfs_dev_files(dev);
+ if (error)
+ dev_err(&dev->dev, "Error creating sysfs files\n");
}
return 0;
}
diff --git a/include/linux/dio.h b/include/linux/dio.h
index 1e65ebc..b2dd31c 100644
--- a/include/linux/dio.h
+++ b/include/linux/dio.h
@@ -241,7 +241,7 @@ struct dio_driver {

extern int dio_find(int deviceid);
extern unsigned long dio_scodetophysaddr(int scode);
-extern void dio_create_sysfs_dev_files(struct dio_dev *);
+extern int dio_create_sysfs_dev_files(struct dio_dev *);

/* New-style probing */
extern int dio_register_driver(struct dio_driver *);
--
1.5.6.5