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of/address: use atomic allocation in pci_register_io_range()

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When kzalloc() is called under spin_lock(), GFP_ATOMIC should be
used to avoid sleeping allocation.
The call tree is:
  of_pci_range_to_resource()
    --> pci_register_io_range() <-- takes spin_lock(&io_range_lock);
       --> kzalloc()

Signed-off-by: Jingoo Han <jingoohan1@gmail.com>
Cc: stable@vger.kernel.org # 3.18+
Signed-off-by: Rob Herring <robh@kernel.org>
This commit is contained in:
Jingoo Han
2015-06-18 00:12:27 +09:00
committed by Rob Herring
parent 72d942e23c
commit 294240ffe7
1 changed files with 1 additions and 1 deletions
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2
drivers/of/address.c
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@@ -712,7 +712,7 @@ int __weak pci_register_io_range(phys_addr_t addr, resource_size_t size)
}
/* add the range to the list */
range = kzalloc(sizeof(*range), GFP_KERNEL);
range = kzalloc(sizeof(*range), GFP_ATOMIC);
if (!range) {
err = -ENOMEM;
goto end_register;