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path: root/drivers/acpi/battery.c
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Diffstat (limited to 'drivers/acpi/battery.c')
-rw-r--r--drivers/acpi/battery.c31
1 files changed, 14 insertions, 17 deletions
diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c
index 07c3c276ad34..2f4521a48fe7 100644
--- a/drivers/acpi/battery.c
+++ b/drivers/acpi/battery.c
@@ -149,7 +149,7 @@ acpi_battery_get_info(struct acpi_battery *battery,
return -ENODEV;
}
- package = (union acpi_object *)buffer.pointer;
+ package = buffer.pointer;
/* Extract Package Data */
@@ -160,12 +160,11 @@ acpi_battery_get_info(struct acpi_battery *battery,
goto end;
}
- data.pointer = kmalloc(data.length, GFP_KERNEL);
+ data.pointer = kzalloc(data.length, GFP_KERNEL);
if (!data.pointer) {
result = -ENOMEM;
goto end;
}
- memset(data.pointer, 0, data.length);
status = acpi_extract_package(package, &format, &data);
if (ACPI_FAILURE(status)) {
@@ -179,7 +178,7 @@ acpi_battery_get_info(struct acpi_battery *battery,
kfree(buffer.pointer);
if (!result)
- (*bif) = (struct acpi_battery_info *)data.pointer;
+ (*bif) = data.pointer;
return result;
}
@@ -209,7 +208,7 @@ acpi_battery_get_status(struct acpi_battery *battery,
return -ENODEV;
}
- package = (union acpi_object *)buffer.pointer;
+ package = buffer.pointer;
/* Extract Package Data */
@@ -220,12 +219,11 @@ acpi_battery_get_status(struct acpi_battery *battery,
goto end;
}
- data.pointer = kmalloc(data.length, GFP_KERNEL);
+ data.pointer = kzalloc(data.length, GFP_KERNEL);
if (!data.pointer) {
result = -ENOMEM;
goto end;
}
- memset(data.pointer, 0, data.length);
status = acpi_extract_package(package, &format, &data);
if (ACPI_FAILURE(status)) {
@@ -239,7 +237,7 @@ acpi_battery_get_status(struct acpi_battery *battery,
kfree(buffer.pointer);
if (!result)
- (*bst) = (struct acpi_battery_status *)data.pointer;
+ (*bst) = data.pointer;
return result;
}
@@ -334,7 +332,7 @@ static struct proc_dir_entry *acpi_battery_dir;
static int acpi_battery_read_info(struct seq_file *seq, void *offset)
{
int result = 0;
- struct acpi_battery *battery = (struct acpi_battery *)seq->private;
+ struct acpi_battery *battery = seq->private;
struct acpi_battery_info *bif = NULL;
char *units = "?";
@@ -418,7 +416,7 @@ static int acpi_battery_info_open_fs(struct inode *inode, struct file *file)
static int acpi_battery_read_state(struct seq_file *seq, void *offset)
{
int result = 0;
- struct acpi_battery *battery = (struct acpi_battery *)seq->private;
+ struct acpi_battery *battery = seq->private;
struct acpi_battery_status *bst = NULL;
char *units = "?";
@@ -494,7 +492,7 @@ static int acpi_battery_state_open_fs(struct inode *inode, struct file *file)
static int acpi_battery_read_alarm(struct seq_file *seq, void *offset)
{
- struct acpi_battery *battery = (struct acpi_battery *)seq->private;
+ struct acpi_battery *battery = seq->private;
char *units = "?";
@@ -531,8 +529,8 @@ acpi_battery_write_alarm(struct file *file,
{
int result = 0;
char alarm_string[12] = { '\0' };
- struct seq_file *m = (struct seq_file *)file->private_data;
- struct acpi_battery *battery = (struct acpi_battery *)m->private;
+ struct seq_file *m = file->private_data;
+ struct acpi_battery *battery = m->private;
if (!battery || (count > sizeof(alarm_string) - 1))
@@ -658,7 +656,7 @@ static int acpi_battery_remove_fs(struct acpi_device *device)
static void acpi_battery_notify(acpi_handle handle, u32 event, void *data)
{
- struct acpi_battery *battery = (struct acpi_battery *)data;
+ struct acpi_battery *battery = data;
struct acpi_device *device = NULL;
@@ -694,10 +692,9 @@ static int acpi_battery_add(struct acpi_device *device)
if (!device)
return -EINVAL;
- battery = kmalloc(sizeof(struct acpi_battery), GFP_KERNEL);
+ battery = kzalloc(sizeof(struct acpi_battery), GFP_KERNEL);
if (!battery)
return -ENOMEM;
- memset(battery, 0, sizeof(struct acpi_battery));
battery->device = device;
strcpy(acpi_device_name(device), ACPI_BATTERY_DEVICE_NAME);
@@ -742,7 +739,7 @@ static int acpi_battery_remove(struct acpi_device *device, int type)
if (!device || !acpi_driver_data(device))
return -EINVAL;
- battery = (struct acpi_battery *)acpi_driver_data(device);
+ battery = acpi_driver_data(device);
status = acpi_remove_notify_handler(device->handle,
ACPI_ALL_NOTIFY,