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dm: core: Mark device as active before calling uclass probe() methods

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The uclass pre-probe functions may end up calling back into the device in
some circumstances. This can fail if recursion takes place. Adjust the
ordering so that we mark the device as active early, then retract this
later if needed.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Marek Vasut <marex@denx.de>
This commit is contained in:
Simon Glass 2015-03-25 12:21:56 -06:00
parent 39de843352
commit 206d4d2b4b
2 changed files with 7 additions and 4 deletions
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8
drivers/core/device.c
View File

@ -243,6 +243,8 @@ int device_probe_child(struct udevice *dev, void *parent_priv)
}
dev->seq = seq;
dev->flags |= DM_FLAG_ACTIVATED;
ret = uclass_pre_probe_device(dev);
if (ret)
goto fail;
@ -269,10 +271,8 @@ int device_probe_child(struct udevice *dev, void *parent_priv)
}
ret = uclass_post_probe_device(dev);
if (ret) {
dev->flags &= ~DM_FLAG_ACTIVATED;
if (ret)
goto fail_uclass;
}
return 0;
fail_uclass:
@ -281,6 +281,8 @@ fail_uclass:
__func__, dev->name);
}
fail:
dev->flags &= ~DM_FLAG_ACTIVATED;
dev->seq = -1;
device_free(dev);

3
test/dm/test-uclass.c
View File

@ -31,6 +31,7 @@ int test_ping(struct udevice *dev, int pingval, int *pingret)
static int test_post_bind(struct udevice *dev)
{
dm_testdrv_op_count[DM_TEST_OP_POST_BIND]++;
ut_assert(!device_active(dev));
return 0;
}
@ -48,7 +49,7 @@ static int test_pre_probe(struct udevice *dev)
dm_testdrv_op_count[DM_TEST_OP_PRE_PROBE]++;
ut_assert(priv);
ut_assert(!device_active(dev));
ut_assert(device_active(dev));
return 0;
}