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authorThadeu Lima de Souza Cascardo <cascardo@linux.vnet.ibm.com>2012-05-28 08:52:05 +0000
committerDavid S. Miller <davem@davemloft.net>2012-05-29 17:30:07 -0400
commita0c6ffbcfe600606b2d913dded4dc6b37b3bbbfd (patch)
tree9ac2c85b2d78b0377a49319cd93ba1f498ba7a89
parentc51ce49735c183ef2592db70f918ee698716276b (diff)
downloadlinux-a0c6ffbcfe600606b2d913dded4dc6b37b3bbbfd.tar.bz2
rds_rdma: don't assume infiniband device is PCI
RDS code assumes that the struct ib_device dma_device member, which is a pointer, points to a struct device embedded in a struct pci_dev. This is not the case for ehca, for example, which is a OF driver, and makes dma_device point to a struct device embedded in a struct platform_device. This will make the system crash when rds_rdma is loaded in a system with ehca, since it will try to access the bus member of a non-existent struct pci_dev. The only reason rds_rdma uses the struct pci_dev is to get the NUMA node the device is attached to. Using dev_to_node for that is much better, since it won't assume which bus the infiniband is attached to. Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@linux.vnet.ibm.com> Cc: dledford@redhat.com Cc: Jes.Sorensen@redhat.com Cc: Venkat Venkatsubra <venkat.x.venkatsubra@oracle.com> Acked-by: Venkat Venkatsubra <venkat.x.venkatsubra@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--net/rds/ib.h3
1 files changed, 1 insertions, 2 deletions
diff --git a/net/rds/ib.h b/net/rds/ib.h
index edfaaaf164eb..8d2b3d5a7c21 100644
--- a/net/rds/ib.h
+++ b/net/rds/ib.h
@@ -186,8 +186,7 @@ struct rds_ib_device {
struct work_struct free_work;
};
-#define pcidev_to_node(pcidev) pcibus_to_node(pcidev->bus)
-#define ibdev_to_node(ibdev) pcidev_to_node(to_pci_dev(ibdev->dma_device))
+#define ibdev_to_node(ibdev) dev_to_node(ibdev->dma_device)
#define rdsibdev_to_node(rdsibdev) ibdev_to_node(rdsibdev->dev)
/* bits for i_ack_flags */