3.19.8-ckt4 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Jingoo Han <jingoohan1@xxxxxxxxx>
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@xxxxxxxxx>
Signed-off-by: Rob Herring <robh@xxxxxxxxxx>
Signed-off-by: Kamal Mostafa <kamal@xxxxxxxxxxxxx>
---
drivers/of/address.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/of/address.c b/drivers/of/address.c
index 6906a3f..8bfda6a 100644
--- a/drivers/of/address.c
+++ b/drivers/of/address.c
@@ -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;
--
1.9.1
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