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Groups > linux.kernel > #1671185 > unrolled thread

[PATCH v6 0/4] of: remove *phandle properties from expanded device tree

Started byfrowand.list@gmail.com
First post2017-06-21 00:10 +0200
Last post2017-06-22 01:50 +0200
Articles 3 — 2 participants

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  [PATCH v6 0/4] of: remove *phandle properties from expanded device tree frowand.list@gmail.com - 2017-06-21 00:10 +0200
    [PATCH v6 2/4] of: make __of_attach_node() static frowand.list@gmail.com - 2017-06-21 00:10 +0200
      Re: [PATCH v6 2/4] of: make __of_attach_node() static Stephen Boyd <sboyd@codeaurora.org> - 2017-06-22 01:50 +0200

#1671185 — [PATCH v6 0/4] of: remove *phandle properties from expanded device tree

Fromfrowand.list@gmail.com
Date2017-06-21 00:10 +0200
Subject[PATCH v6 0/4] of: remove *phandle properties from expanded device tree
Message-ID<tUzvs-5W2-7@gated-at.bofh.it>
From: Frank Rowand <frank.rowand@sony.com>

Remove "phandle" and "linux,phandle" properties from the internal
device tree.  The phandle will still be in the struct device_node
phandle field and will still be displayed as if it is a property
in /proc/device_tree.

This is to resolve the issue found by Stephen Boyd [1] when he changed
the type of struct property.value from void * to const void *.  As
a result of the type change, the overlay code had compile errors
where the resolver updates phandle values.

  [1] http://lkml.iu.edu/hypermail/linux/kernel/1702.1/04160.html

Patch 1 is the phandle related changes.

Patches 2 - 4 are minor fixups for issues that became visible
while implementing patch 1.

Changes from v5:
   - patch 1: populate_properties(), prop_is_phandle was declared
     at the wrong scope and thus was initialized before the for
     loop instead of each time through the loop.  This resulted
     in any property in a node after the phandle property not
     being unflattened.

Changes from v4:
   - rebase on 4.12-rc1
   - Add reason for "<NULL>" in of_attach_node()
   - Simplify and consolidate phandle detection logic in
     populate_properties().  This results in a change of behaviour,
     the value of property "ibm,phandle" will no longer override the
     value of properties "phandle" and "linux,phandle".

Changes from v3:
   - patch 1: fix incorrect variable name in __of_add_phandle_sysfs().
     Problem was reported by the kbuild test robot

Changes from v2:
   - patch 1: Remove check in __of_add_phandle_sysfs() that would not
     add a sysfs entry if IS_ENABLED(CONFIG_PPC_PSERIES)

Changes from v1:
   - Remove phandle properties in of_attach_node(), before attaching
     the node to the live tree.
   - Add the phandle sysfs entry for the node in of_attach_node().
   - When creating an overlay changeset, duplicate the node phandle in
     __of_node_dup().


*** BLURB HERE ***

Frank Rowand (4):
  of: remove *phandle properties from expanded device tree
  of: make __of_attach_node() static
  of: be consistent in form of file mode
  of: detect invalid phandle in overlay

 drivers/of/base.c       | 50 +++++++++++++++++++++++++++++++++++++++----
 drivers/of/dynamic.c    | 57 +++++++++++++++++++++++++++++++++++++------------
 drivers/of/fdt.c        | 43 ++++++++++++++++++-------------------
 drivers/of/of_private.h |  2 +-
 drivers/of/overlay.c    |  8 ++++---
 drivers/of/resolver.c   | 23 +-------------------
 include/linux/of.h      |  1 +
 7 files changed, 118 insertions(+), 66 deletions(-)

-- 
Frank Rowand <frank.rowand@sony.com>

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#1671187 — [PATCH v6 2/4] of: make __of_attach_node() static

Fromfrowand.list@gmail.com
Date2017-06-21 00:10 +0200
Subject[PATCH v6 2/4] of: make __of_attach_node() static
Message-ID<tUzvt-5W2-47@gated-at.bofh.it>
In reply to#1671185
From: Frank Rowand <frank.rowand@sony.com>

__of_attach_node() is not used outside of drivers/of/dynamic.c.  Make
it static and remove it from drivers/of/of_private.h.

Signed-off-by: Frank Rowand <frank.rowand@sony.com>
---
 drivers/of/dynamic.c    | 2 +-
 drivers/of/of_private.h | 1 -
 2 files changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/of/dynamic.c b/drivers/of/dynamic.c
index be320082178f..3367ed2da9ad 100644
--- a/drivers/of/dynamic.c
+++ b/drivers/of/dynamic.c
@@ -216,7 +216,7 @@ int of_property_notify(int action, struct device_node *np,
 	return of_reconfig_notify(action, &pr);
 }
 
-void __of_attach_node(struct device_node *np)
+static void __of_attach_node(struct device_node *np)
 {
 	np->child = NULL;
 	np->sibling = np->parent->child;
diff --git a/drivers/of/of_private.h b/drivers/of/of_private.h
index 1a041411b219..73da291a51cd 100644
--- a/drivers/of/of_private.h
+++ b/drivers/of/of_private.h
@@ -91,7 +91,6 @@ extern int __of_update_property(struct device_node *np,
 extern void __of_update_property_sysfs(struct device_node *np,
 		struct property *newprop, struct property *oldprop);
 
-extern void __of_attach_node(struct device_node *np);
 extern int __of_attach_node_sysfs(struct device_node *np);
 extern void __of_detach_node(struct device_node *np);
 extern void __of_detach_node_sysfs(struct device_node *np);
-- 
Frank Rowand <frank.rowand@sony.com>

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#1672158 — Re: [PATCH v6 2/4] of: make __of_attach_node() static

FromStephen Boyd <sboyd@codeaurora.org>
Date2017-06-22 01:50 +0200
SubjectRe: [PATCH v6 2/4] of: make __of_attach_node() static
Message-ID<tUXxL-4Ng-9@gated-at.bofh.it>
In reply to#1671187
On 06/20, frowand.list@gmail.com wrote:
> From: Frank Rowand <frank.rowand@sony.com>
> 
> __of_attach_node() is not used outside of drivers/of/dynamic.c.  Make
> it static and remove it from drivers/of/of_private.h.
> 
> Signed-off-by: Frank Rowand <frank.rowand@sony.com>
> ---

Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>

-- 
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project

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