IB/mthca: restore missing PCI registers after reset

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mthca does not restore the following PCI-X/PCI Express registers after reset:
  PCI-X device: PCI-X command register
  PCI-X bridge: upstream and downstream split transaction registers
  PCI Express : PCI Express device control and link control registers

This causes instability and/or bad performance on systems where one of
these registers is set to a non-default value by BIOS.

Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

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Michael S. Tsirkin 2006-06-12 16:57:51 +03:00 • committed by Roland Dreier

parent 427abfa28a

commit 13aa6ecb47

1 changed files with 59 additions and 0 deletions

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drivers/infiniband/hw/mthca/mthca_reset.c

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