| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.1 233/267] of/address: use atomic allocation in pci_register_io_range() | Date | Fri, 31 Jul 2015 12:41:24 -0700 |
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4.1-stable review patch. If anyone has any objections, please let me know.
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From: Jingoo Han <jingoohan1@gmail.com>
commit 294240ffe784e951dc2ef070da04fa31ef6db3a0 upstream.
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> Signed-off-by: Rob Herring <robh@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- drivers/of/address.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/of/address.c +++ b/drivers/of/address.c @@ -712,7 +712,7 @@ int __weak pci_register_io_range(phys_ad } /* 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;
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