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| author | Nicholas Mc Guire <hofrat@osadl.org> | 2018-07-12 11:28:22 +0200 |
|---|---|---|
| committer | Wei Xu <xuwei5@hisilicon.com> | 2018-07-16 17:36:42 +0100 |
| commit | 9f30b5ae0585ca5234fe979294b8f897299dec99 (patch) | |
| tree | 1845b5e6fd8ba5a0403951ba6603893f6f5b453b | |
| parent | ce397d215ccd07b8ae3f71db689aedb85d56ab40 (diff) | |
| download | linux-stable-9f30b5ae0585ca5234fe979294b8f897299dec99.tar.gz linux-stable-9f30b5ae0585ca5234fe979294b8f897299dec99.tar.bz2 linux-stable-9f30b5ae0585ca5234fe979294b8f897299dec99.zip | |
ARM: hisi: fix error handling and missing of_node_put
of_iomap() can return NULL which seems critical here and thus should be
explicitly flagged so that the cause of system halting can be understood.
As of_find_compatible_node() is returning a device node with refcount
incremented it must be explicitly decremented here.
Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org>
Fixes: commit 7fda91e73155 ("ARM: hisi: enable smp for HiP01")
Signed-off-by: Wei Xu <xuwei5@hisilicon.com>
| -rw-r--r-- | arch/arm/mach-hisi/hotplug.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/arch/arm/mach-hisi/hotplug.c b/arch/arm/mach-hisi/hotplug.c index a129aae72602..3b0d1c695108 100644 --- a/arch/arm/mach-hisi/hotplug.c +++ b/arch/arm/mach-hisi/hotplug.c @@ -219,10 +219,10 @@ void hip01_set_cpu(int cpu, bool enable) if (!ctrl_base) { np = of_find_compatible_node(NULL, NULL, "hisilicon,hip01-sysctrl"); - if (np) - ctrl_base = of_iomap(np, 0); - else - BUG(); + BUG_ON(!np); + ctrl_base = of_iomap(np, 0); + of_node_put(np); + BUG_ON(!ctrl_base); } if (enable) { |