1 files changed, 4 insertions, 4 deletions

diff --git a/drivers/acpi/button.c b/drivers/acpi/button.c
index 5ef885e82c78..fe914ebc4bbc 100644
--- a/drivers/acpi/button.c
+++ b/drivers/acpi/button.c
@@ -109,7 +109,7 @@ static struct proc_dir_entry *acpi_button_dir;
 
 static int acpi_button_info_seq_show(struct seq_file *seq, void *offset)
 {
-        struct acpi_button *button = (struct acpi_button *)seq->private;
+        struct acpi_button *button = seq->private;
 
 
         if (!button || !button->device)
@@ -128,7 +128,7 @@ static int acpi_button_info_open_fs(struct inode *inode, struct file *file)
 
 static int acpi_button_state_seq_show(struct seq_file *seq, void *offset)
 {
-        struct acpi_button *button = (struct acpi_button *)seq->private;
+        struct acpi_button *button = seq->private;
         acpi_status status;
         unsigned long state;
 
@@ -253,7 +253,7 @@ static int acpi_button_remove_fs(struct acpi_device *device)
 
 static void acpi_button_notify(acpi_handle handle, u32 event, void *data)
 {
-        struct acpi_button *button = (struct acpi_button *)data;
+        struct acpi_button *button = data;
 
 
         if (!button || !button->device)
@@ -275,7 +275,7 @@ static void acpi_button_notify(acpi_handle handle, u32 event, void *data)
 
 static acpi_status acpi_button_notify_fixed(void *data)
 {
-        struct acpi_button *button = (struct acpi_button *)data;
+        struct acpi_button *button = data;
 
 
         if (!button)