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UPSTREAM: of/platform: Unconditionally pause/resume sync state during kernel init

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Commit 5e6669387e22 ("of/platform: Pause/resume sync state during init
and of_platform_populate()") paused/resumed sync state during init only
if Linux had parsed and populated a devicetree.

However, the check for that (of_have_populated_dt()) can change after
of_platform_default_populate_init() executes.  One example of this is
when devicetree unittests are enabled.  This causes an unmatched
pause/resume of sync state. To avoid this, just unconditionally
pause/resume sync state during init.

Fixes: 5e6669387e22 ("of/platform: Pause/resume sync state during init and of_platform_populate()")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Saravana Kannan <saravanak@google.com>
Reviewed-by: Frank Rowand <frowand.list@gmail.com>
Signed-off-by: Rob Herring <robh@kernel.org>
(cherry picked from commit ee9b280e17dce51c44e1d04d11eb0a4acd0ee1a9)
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I55cd3767daf785f7c46591fcb9c1f9acbb824540
This commit is contained in:
Saravana Kannan
2019-12-09 11:31:19 -08:00
committed by Greg Kroah-Hartman
parent cf84a06a47
commit 641b04730a
1 changed files with 3 additions and 3 deletions
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6
drivers/of/platform.c
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@@ -526,10 +526,11 @@ static int __init of_platform_default_populate_init(void)
{
struct device_node *node;
device_links_supplier_sync_state_pause();
if (!of_have_populated_dt())
return -ENODEV;
device_links_supplier_sync_state_pause();
/*
* Handle certain compatibles explicitly, since we don't want to create
* platform_devices for every node in /reserved-memory with a
@@ -555,8 +556,7 @@ arch_initcall_sync(of_platform_default_populate_init);
static int __init of_platform_sync_state_init(void)
{
if (of_have_populated_dt())
device_links_supplier_sync_state_resume();
device_links_supplier_sync_state_resume();
return 0;
}
late_initcall_sync(of_platform_sync_state_init);