of_platform_depopulate can lead to a kernel error when calling release_resource()
The reason is that it is trying to release a resource that was not allocated
via insert_resource()
of_platform_depopulate()
of_platform_device_destroy()
platform_device_unregister(platform_device *pdev)
platform_device_del(platform_device *pdev)
for (i = 0; i < pdev->num_resources; i++)
release_resource()
of_platform_populate()
...
of_device_alloc()
pdev = platform_device_alloc()
# set pdev->resource, similar to platform_device_add_resources()
of_device_add(platform_device *pdev)
# similar to platform_device_add(), but note there's no
# insert_resource() in this path
device_add(&pdev->dev)
On this patchset:
base/platform has been fixed for an hypothetical condition where parent is
set but the platform is neither MEM or IO.
Then platform_device_alloc has been modified so it supports of and amba
devices.
Finally of_device_add has been modified to use platform_device_add().
v1: https://lkml.org/lkml/2015/4/20/435
v2: From: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
-Fix caller, not callee
https://lkml.org/lkml/2015/4/21/99
https://lkml.org/lkml/2015/4/21/100
v3: From: Rob Herring <robherring2@xxxxxxxxx>
- Modify plaform_device_alloc to support of and ambda devices
https://lkml.org/lkml/2015/4/22/369
https://lkml.org/lkml/2015/4/22/370
https://lkml.org/lkml/2015/4/22/371
https://lkml.org/lkml/2015/4/22/374
https://lkml.org/lkml/2015/4/22/373
v4: From: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
-Remove WARN() patch
-Show conflicting resources
-Code Style
-Fix descriptions
From: Rob Herring <robherring2@xxxxxxxxx>
-Fix descriptions
https://lkml.org/lkml/2015/4/23/254
https://lkml.org/lkml/2015/4/23/258
https://lkml.org/lkml/2015/4/23/257
https://lkml.org/lkml/2015/4/23/256
https://lkml.org/lkml/2015/4/23/255
v5: From: Rob Herring <robherring2@xxxxxxxxx>
-Fix descriptions
Ricardo Ribalda Delgado (4):
base/platform: Only insert MEM and IO resources
base/platform: Continue on insert_resource() error
of/platform: Use platform_device interface
base/platform: Remove code duplication
drivers/base/platform.c | 84 ++++++++++++++++++++++++-------------------------
drivers/of/platform.c | 3 +-
2 files changed, 43 insertions(+), 44 deletions(-)
--
2.1.4
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