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| author | Myron Stowe <myron.stowe@redhat.com> | 2012-03-02 20:45:01 +0100 |
|---|---|---|
| committer | Jesse Barnes <jbarnes@virtuousgeek.org> | 2012-03-02 21:03:58 +0100 |
| commit | 63ab387ca0d1576edef35ef68e4b8ea5e0757b7a (patch) | |
| tree | f68e3c80461c15e20c019814e557ee095e82f734 /arch/x86/pci/i386.c | |
| parent | PCI / PCIe: Introduce command line option to disable ARI (diff) | |
| download | linux-63ab387ca0d1576edef35ef68e4b8ea5e0757b7a.tar.xz linux-63ab387ca0d1576edef35ef68e4b8ea5e0757b7a.zip | |
x86/PCI: add spinlock held check to 'pcibios_fwaddrmap_lookup()'
'pcibios_fwaddrmap_lookup()' is used to maintain FW-assigned BIOS BAR
values for reinstatement when normal resource assignment attempts
fail and must be called with the 'pcibios_fwaddrmap_lock' spinlock
held.
This patch adds a WARN_ON notification if the spinlock is not currently
held by the caller.
Signed-off-by: Myron Stowe <myron.stowe@redhat.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'arch/x86/pci/i386.c')
| -rw-r--r-- | arch/x86/pci/i386.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/pci/i386.c b/arch/x86/pci/i386.c index 33e6a0b995fc..831971e731f7 100644 --- a/arch/x86/pci/i386.c +++ b/arch/x86/pci/i386.c @@ -57,6 +57,8 @@ static struct pcibios_fwaddrmap *pcibios_fwaddrmap_lookup(struct pci_dev *dev) { struct pcibios_fwaddrmap *map; + WARN_ON(!spin_is_locked(&pcibios_fwaddrmap_lock)); + list_for_each_entry(map, &pcibios_fwaddrmappings, list) if (map->dev == dev) return map; |