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authorJiri Slaby <jslaby@suse.cz>2010-06-09 16:31:13 -0400
committerJesse Barnes <jbarnes@virtuousgeek.org>2010-06-11 16:10:21 -0400
commita7ef7d1f5e898984c479e8c41ca702141bbadc78 (patch)
treefa742fbb39071799d02652cf5cbbca3f25af5724 /arch/powerpc/kernel/pci-common.c
parent3be434f0244ee059432f92de7e891ee514f41738 (diff)
PCI: hotplug/cpqphp, fix NULL dereference
There are devices out there which are PCI Hot-plug controllers with compaq PCI IDs, but are not bridges, hence have pdev->subordinate NULL. But cpqphp expects the pointer to be non-NULL. Add a check to the probe function to avoid oopses like: BUG: unable to handle kernel NULL pointer dereference at 00000050 IP: [<f82e3c41>] cpqhpc_probe+0x951/0x1120 [cpqphp] *pdpt = 0000000033779001 *pde = 0000000000000000 ... The device here was: 00:0b.0 PCI Hot-plug controller [0804]: Compaq Computer Corporation PCI Hotplug Controller [0e11:a0f7] (rev 11) Subsystem: Compaq Computer Corporation Device [0e11:a2f8] Signed-off-by: Jiri Slaby <jslaby@suse.cz> Cc: Greg KH <greg@kroah.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'arch/powerpc/kernel/pci-common.c')
0 files changed, 0 insertions, 0 deletions