1 files changed, 8 insertions, 17 deletions

diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index 068fe4f100b0..02b30ae6a68e 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -50,6 +50,7 @@ ACPI_MODULE_NAME("osl")
 struct acpi_os_dpc {
         acpi_osd_exec_callback function;
         void *context;
+        struct work_struct work;
 };
 
 #ifdef CONFIG_ACPI_CUSTOM_DSDT
@@ -564,12 +565,9 @@ void acpi_os_derive_pci_id(acpi_handle rhandle,	/* upper bound  */
         acpi_os_derive_pci_id_2(rhandle, chandle, id, &is_bridge, &bus_number);
 }
 
-static void acpi_os_execute_deferred(void *context)
+static void acpi_os_execute_deferred(struct work_struct *work)
 {
-        struct acpi_os_dpc *dpc = NULL;
-
-
-        dpc = (struct acpi_os_dpc *)context;
+        struct acpi_os_dpc *dpc = container_of(work, struct acpi_os_dpc, work);
         if (!dpc) {
                 printk(KERN_ERR PREFIX "Invalid (NULL) context\n");
                 return;
@@ -602,7 +600,6 @@ acpi_status acpi_os_execute(acpi_execute_type type,
 {
         acpi_status status = AE_OK;
         struct acpi_os_dpc *dpc;
-        struct work_struct *task;
 
         ACPI_FUNCTION_TRACE("os_queue_for_execution");
 
@@ -615,28 +612,22 @@ acpi_status acpi_os_execute(acpi_execute_type type,
 
         /*
          * Allocate/initialize DPC structure.  Note that this memory will be
-         * freed by the callee.  The kernel handles the tq_struct list  in a
+         * freed by the callee.  The kernel handles the work_struct list  in a
          * way that allows us to also free its memory inside the callee.
          * Because we may want to schedule several tasks with different
          * parameters we can't use the approach some kernel code uses of
-         * having a static tq_struct.
-         * We can save time and code by allocating the DPC and tq_structs
-         * from the same memory.
+         * having a static work_struct.
          */
 
-        dpc =
-            kmalloc(sizeof(struct acpi_os_dpc) + sizeof(struct work_struct),
-                    GFP_ATOMIC);
+        dpc = kmalloc(sizeof(struct acpi_os_dpc), GFP_ATOMIC);
         if (!dpc)
                 return_ACPI_STATUS(AE_NO_MEMORY);
 
         dpc->function = function;
         dpc->context = context;
 
-        task = (void *)(dpc + 1);
-        INIT_WORK(task, acpi_os_execute_deferred, (void *)dpc);
-
-        if (!queue_work(kacpid_wq, task)) {
+        INIT_WORK(&dpc->work, acpi_os_execute_deferred);
+        if (!queue_work(kacpid_wq, &dpc->work)) {
                 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
                                   "Call to queue_work() failed.\n"));
                 kfree(dpc);