+diff -rupN NVIDIA-Linux-x86_64-331.38.orig/kernel/nv-acpi.c NVIDIA-Linux-x86_64-331.38/kernel/nv-acpi.c
+--- NVIDIA-Linux-x86_64-331.38.orig/kernel/nv-acpi.c 2014-01-25 09:39:47.126966926 +0100
++++ NVIDIA-Linux-x86_64-331.38/kernel/nv-acpi.c 2014-01-26 09:59:45.853427603 +0100
+@@ -303,7 +303,10 @@ static int nv_acpi_remove(struct acpi_de
+
+ if (pNvAcpiObject->notify_handler_installed)
+ {
++#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 13, 0)
++ /* beginning with 3.13, acpi_remove_notify_handler() waits for events to finish */
+ NV_ACPI_OS_WAIT_EVENTS_COMPLETE();
++#endif
+
+ // remove event notifier
+ status = acpi_remove_notify_handler(device->handle, ACPI_DEVICE_NOTIFY, nv_acpi_event);
+@@ -1076,10 +1079,17 @@ RM_STATUS NV_API_CALL nv_acpi_dsm_method
+ union acpi_object dsm_params[4];
+ NvU8 argument3[4]; /* For all DSM sub functions, input size is 4 */
+ acpi_handle dev_handle = NULL;
++#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 13, 0)
+ #ifdef DEVICE_ACPI_HANDLE
+ nv_linux_state_t *nvl = NV_GET_NVL_FROM_NV_STATE(nv);
+ dev_handle = DEVICE_ACPI_HANDLE(&nvl->dev->dev);
+ #endif
++#else
++#ifdef ACPI_HANDLE
++ nv_linux_state_t *nvl = NV_GET_NVL_FROM_NV_STATE(nv);
++ dev_handle = ACPI_HANDLE(&nvl->dev->dev);
++#endif
++#endif
+ if (!dev_handle)
+ return RM_ERR_NOT_SUPPORTED;
+
+@@ -1179,12 +1189,21 @@ RM_STATUS NV_API_CALL nv_acpi_ddc_method
+ NvU32 i;
+ acpi_handle dev_handle = NULL;
+ acpi_handle lcd_dev_handle = NULL;
++#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 13, 0)
+ #ifdef DEVICE_ACPI_HANDLE
+ nv_linux_state_t *nvl = NV_GET_NVL_FROM_NV_STATE(nv);
+ dev_handle = DEVICE_ACPI_HANDLE(&nvl->dev->dev);
+ #else
+ return RM_ERR_NOT_SUPPORTED;
+ #endif
++#else
++#ifdef ACPI_HANDLE
++ nv_linux_state_t *nvl = NV_GET_NVL_FROM_NV_STATE(nv);
++ dev_handle = ACPI_HANDLE(&nvl->dev->dev);
++#else
++ return RM_ERR_NOT_SUPPORTED;
++#endif
++#endif
+ if (!dev_handle)
+ return RM_ERR_INVALID_ARGUMENT;
+
+@@ -1294,12 +1313,21 @@ RM_STATUS NV_API_CALL nv_acpi_rom_method
+ union acpi_object rom_arg[2];
+ struct acpi_object_list input = { 2, rom_arg };
+ acpi_handle dev_handle = NULL;
++#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 13, 0)
+ #ifdef DEVICE_ACPI_HANDLE
+ nv_linux_state_t *nvl = NV_GET_NVL_FROM_NV_STATE(nv);
+ dev_handle = DEVICE_ACPI_HANDLE(&nvl->dev->dev);
+ #else
+ return RM_ERR_NOT_SUPPORTED;
+ #endif
++#else
++#ifdef ACPI_HANDLE
++ nv_linux_state_t *nvl = NV_GET_NVL_FROM_NV_STATE(nv);
++ dev_handle = ACPI_HANDLE(&nvl->dev->dev);
++#else
++ return RM_ERR_NOT_SUPPORTED;
++#endif
++#endif
+ if (!dev_handle)
+ return RM_ERR_INVALID_ARGUMENT;
+