41 lines
1.7 KiB
Diff
41 lines
1.7 KiB
Diff
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From 10629d711ed780470937ecda50d9ffa0e925a4ee Mon Sep 17 00:00:00 2001
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From: Bjorn Helgaas <bhelgaas@google.com>
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Date: Wed, 10 Apr 2013 09:56:54 -0600
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Subject: [PATCH 1/2] PCI: Remove __weak annotation from
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pcibios_get_phb_of_node decl
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The __weak annotation on the pcibios_get_phb_of_node() declaration
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causes *every* definition to be marked "weak." The linker then
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selects one based on link order, which may be the wrong one.
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Gabor found that on MIPS, the linker selected the generic implementation
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from drivers/pci even though arch/mips supplied a definition without the
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__weak annotation:
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$ mipsel-openwrt-linux-readelf -s arch/mips/pci/built-in.o \
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drivers/pci/built-in.o vmlinux.o | grep pcibios_get_phb_of_node
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86: 0000046c 12 FUNC WEAK DEFAULT 2 pcibios_get_phb_of_node
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1430: 00012e2c 104 FUNC WEAK DEFAULT 2 pcibios_get_phb_of_node
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31898: 0017e4ec 104 FUNC WEAK DEFAULT 2 pcibios_get_phb_of_node
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This removes the __weak annotation from the pcibios_get_phb_of_node()
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declaration so arch-specific non-weak implementations work reliably.
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Suggested-by: Gabor Juhos <juhosg@openwrt.org>
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Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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---
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include/linux/pci.h | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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--- a/include/linux/pci.h
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+++ b/include/linux/pci.h
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@@ -1803,7 +1803,7 @@ extern void pci_set_bus_of_node(struct p
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extern void pci_release_bus_of_node(struct pci_bus *bus);
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/* Arch may override this (weak) */
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-extern struct device_node * __weak pcibios_get_phb_of_node(struct pci_bus *bus);
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+extern struct device_node *pcibios_get_phb_of_node(struct pci_bus *bus);
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static inline struct device_node *
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pci_device_to_OF_node(const struct pci_dev *pdev)
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