[U-Boot] [PATCH v2 05/14] dm: add DM_FLAG_BOUND flag

Masahiro Yamada
2015-07-13T04:17:08Z

Currently, we only have DM_FLAG_ACTIVATED to indicate the device
status, but we still cannot know in which stage is in progress,
binding or probing.

This commit introduces a new flag, DM_FLAG_BOUND, which is set when
the device is really bound, and cleared when it is unbound.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
---

Changes in v2: None

drivers/core/device-remove.c | 3 +++
drivers/core/device.c | 2 ++
include/dm/device.h | 3 +++
3 files changed, 8 insertions(+)

diff --git a/drivers/core/device-remove.c b/drivers/core/device-remove.c
index 6a16b4f..20b56f9 100644
--- a/drivers/core/device-remove.c
+++ b/drivers/core/device-remove.c
@@ -75,6 +75,9 @@ int device_unbind(struct udevice *dev)
if (dev->flags & DM_FLAG_ACTIVATED)
return -EINVAL;

+ if (!(dev->flags & DM_FLAG_BOUND))
+ return -EINVAL;
+
drv = dev->driver;
assert(drv);

diff --git a/drivers/core/device.c b/drivers/core/device.c
index 46bf388..39cc2f3 100644
--- a/drivers/core/device.c
+++ b/drivers/core/device.c
@@ -132,6 +132,8 @@ int device_bind(struct udevice *parent, const struct driver *drv,
dm_dbg("Bound device %s to %s\n", dev->name, parent->name);
*devp = dev;

+ dev->flags |= DM_FLAG_BOUND;
+
return 0;

fail_child_post_bind:
diff --git a/include/dm/device.h b/include/dm/device.h
index 18296bb..3674d19 100644
--- a/include/dm/device.h
+++ b/include/dm/device.h
@@ -36,6 +36,9 @@ struct driver_info;
/* Allocate driver private data on a DMA boundary */
#define DM_FLAG_ALLOC_PRIV_DMA (1 << 5)

+/* Device is bound */
+#define DM_FLAG_BOUND (1 << 6)
+
/**
* struct udevice - An instance of a driver
*
--
1.9.1