1 files changed, 6 insertions, 8 deletions

diff --git a/drivers/acpi/pci_link.c b/drivers/acpi/pci_link.c
index d53bd9878ca2..481e633bbf41 100644
--- a/drivers/acpi/pci_link.c
+++ b/drivers/acpi/pci_link.c
@@ -103,7 +103,7 @@ DEFINE_MUTEX(acpi_link_lock);
 static acpi_status
 acpi_pci_link_check_possible(struct acpi_resource *resource, void *context)
 {
-        struct acpi_pci_link *link = (struct acpi_pci_link *)context;
+        struct acpi_pci_link *link = context;
         u32 i = 0;
 
 
@@ -307,11 +307,10 @@ static int acpi_pci_link_set(struct acpi_pci_link *link, int irq)
         if (!link || !irq)
                 return -EINVAL;
 
-        resource = kmalloc(sizeof(*resource) + 1, irqs_disabled() ? GFP_ATOMIC: GFP_KERNEL);
+        resource = kzalloc(sizeof(*resource) + 1, irqs_disabled() ? GFP_ATOMIC: GFP_KERNEL);
         if (!resource)
                 return -ENOMEM;
 
-        memset(resource, 0, sizeof(*resource) + 1);
         buffer.length = sizeof(*resource) + 1;
         buffer.pointer = resource;
 
@@ -613,7 +612,7 @@ acpi_pci_link_allocate_irq(acpi_handle handle,
                 return -1;
         }
 
-        link = (struct acpi_pci_link *)acpi_driver_data(device);
+        link = acpi_driver_data(device);
         if (!link) {
                 printk(KERN_ERR PREFIX "Invalid link context\n");
                 return -1;
@@ -668,7 +667,7 @@ int acpi_pci_link_free_irq(acpi_handle handle)
                 return -1;
         }
 
-        link = (struct acpi_pci_link *)acpi_driver_data(device);
+        link = acpi_driver_data(device);
         if (!link) {
                 printk(KERN_ERR PREFIX "Invalid link context\n");
                 return -1;
@@ -718,10 +717,9 @@ static int acpi_pci_link_add(struct acpi_device *device)
         if (!device)
                 return -EINVAL;
 
-        link = kmalloc(sizeof(struct acpi_pci_link), GFP_KERNEL);
+        link = kzalloc(sizeof(struct acpi_pci_link), GFP_KERNEL);
         if (!link)
                 return -ENOMEM;
-        memset(link, 0, sizeof(struct acpi_pci_link));
 
         link->device = device;
         strcpy(acpi_device_name(device), ACPI_PCI_LINK_DEVICE_NAME);
@@ -808,7 +806,7 @@ static int acpi_pci_link_remove(struct acpi_device *device, int type)
         if (!device || !acpi_driver_data(device))
                 return -EINVAL;
 
-        link = (struct acpi_pci_link *)acpi_driver_data(device);
+        link = acpi_driver_data(device);
 
         mutex_lock(&acpi_link_lock);
         list_del(&link->node);