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05 April 2024, 19:05:47 UTC
Revision 8c237cd0ccb570d13158758af02e11359a4a5b1c authored by Gavin Shan on 09 June 2016, 05:50:49 UTC, committed by Rob Herring on 09 June 2016, 19:36:34 UTC 
drivers/of: Fix depth for sub-tree blob in unflatten_dt_nodes()
 
The function is unflattening device sub-tree blob if @dad passed to
the function is valid. Currently, this functionality is used by PPC
PowerNV PCI hotplug driver only. There are possibly multiple nodes
in the first level of depth, fdt_next_node() bails immediately when
@depth becomes negative before the second device node can be probed
successfully. It leads to the device nodes except the first one won't
be unflattened successfully.

This fixes the issue by setting the initial depth (@inital_depth) to
1 when this function is called to unflatten device sub-tree blob. No
logic changes when this function is used to unflatten non-sub-tree
blob.

Cc: Rhyland Klein <rklein@nvidia.com>
Fixes: 78c44d910 ("drivers/of: Fix depth when unflattening devicetree")
Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Tested-by: Rhyland Klein <rklein@nvidia.com>
Tested-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
Signed-off-by: Rob Herring <robh@kernel.org>
1 parent 5c1d331
History
Tip revision: 8c237cd0ccb570d13158758af02e11359a4a5b1c authored by Gavin Shan on 09 June 2016, 05:50:49 UTC
drivers/of: Fix depth for sub-tree blob in unflatten_dt_nodes()
Tip revision: 8c237cd
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