From 89876a55a62f495302e2fd76094e45a65ca188b2 Mon Sep 17 00:00:00 2001
From: Simon Glass <sjg@chromium.org>
Date: Wed, 11 Jun 2014 23:29:49 -0600
Subject: [PATCH] dm: Cast away the const-ness of the global_data pointer
In a very few cases we need to adjust the driver model root device, such as
when setting it up at initialisation. Add a macro to make this easier.
Signed-off-by: Simon Glass <sjg@chromium.org>
---
drivers/core/root.c | 6 +++---
drivers/core/uclass.c | 2 +-
include/dm/device-internal.h | 4 ++++
3 files changed, 8 insertions(+), 4 deletions(-)
diff --git a/drivers/core/root.c b/drivers/core/root.c
index f31be72cd0..1cbb096494 100644
--- a/drivers/core/root.c
+++ b/drivers/core/root.c
@@ -43,9 +43,9 @@ int dm_init(void)
dm_warn("Virtual root driver already exists!\n");
return -EINVAL;
}
- INIT_LIST_HEAD(&gd->uclass_root);
+ INIT_LIST_HEAD(&DM_UCLASS_ROOT_NON_CONST);
- ret = device_bind_by_name(NULL, &root_info, &gd->dm_root);
+ ret = device_bind_by_name(NULL, &root_info, &DM_ROOT_NON_CONST);
if (ret)
return ret;
@@ -56,7 +56,7 @@ int dm_scan_platdata(void)
{
int ret;
- ret = lists_bind_drivers(gd->dm_root);
+ ret = lists_bind_drivers(DM_ROOT_NON_CONST);
if (ret == -ENOENT) {
dm_warn("Some drivers were not found\n");
ret = 0;
diff --git a/drivers/core/uclass.c b/drivers/core/uclass.c
index f6867e4a23..34723ec42a 100644
--- a/drivers/core/uclass.c
+++ b/drivers/core/uclass.c
@@ -75,7 +75,7 @@ static int uclass_add(enum uclass_id id, struct uclass **ucp)
uc->uc_drv = uc_drv;
INIT_LIST_HEAD(&uc->sibling_node);
INIT_LIST_HEAD(&uc->dev_head);
- list_add(&uc->sibling_node, &gd->uclass_root);
+ list_add(&uc->sibling_node, &DM_UCLASS_ROOT_NON_CONST);
if (uc_drv->init) {
ret = uc_drv->init(uc);
diff --git a/include/dm/device-internal.h b/include/dm/device-internal.h
index ea3df36632..26e5cf530e 100644
--- a/include/dm/device-internal.h
+++ b/include/dm/device-internal.h
@@ -84,4 +84,8 @@ int device_remove(struct udevice *dev);
*/
int device_unbind(struct udevice *dev);
+/* Cast away any volatile pointer */
+#define DM_ROOT_NON_CONST (((gd_t *)gd)->dm_root)
+#define DM_UCLASS_ROOT_NON_CONST (((gd_t *)gd)->uclass_root)
+
#endif
--
2.39.5