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 ---
Changes in v2: - Add new patch to deal with const-ness of the global_data pointer
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 88d2f45..4427b81 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());
- ret = device_bind_by_name(NULL, &root_info, &gd->dm_root); + ret = device_bind_by_name(NULL, &root_info, &DM_ROOT()); 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()); 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 4df5a8b..afb5fdc 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());
if (uc_drv->init) { ret = uc_drv->init(uc); diff --git a/include/dm/device-internal.h b/include/dm/device-internal.h index c026e8e..e95b7a9 100644 --- a/include/dm/device-internal.h +++ b/include/dm/device-internal.h @@ -84,4 +84,8 @@ int device_remove(struct device *dev); */ int device_unbind(struct device *dev);
+/* Cast away any volatile pointer */ +#define DM_ROOT() (((gd_t *)gd)->dm_root) +#define DM_UCLASS_ROOT() (((gd_t *)gd)->uclass_root) + #endif