diff options
| author | Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> | 2010-04-15 13:09:13 +0900 |
|---|---|---|
| committer | Jesse Barnes <jbarnes@virtuousgeek.org> | 2010-05-11 12:01:12 -0700 |
| commit | c6d34eddecb34fd84f9fb2ea26a63cfde5662f49 (patch) | |
| tree | a80ed52485693d649158621edcd8bd2d9431d3c9 /drivers/pci/pcie/aer/aerdrv_core.c | |
| parent | d4dfd7278eade24c4aa4b36b8df981fab04f2f26 (diff) | |
PCI: aerdrv: RsvdP of PCI_ERR_ROOT_COMMAND
Handle preserved bits properly.
Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Reviewed-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'drivers/pci/pcie/aer/aerdrv_core.c')
| -rw-r--r-- | drivers/pci/pcie/aer/aerdrv_core.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/drivers/pci/pcie/aer/aerdrv_core.c b/drivers/pci/pcie/aer/aerdrv_core.c index aceb04b67b6..9754a09bf20 100644 --- a/drivers/pci/pcie/aer/aerdrv_core.c +++ b/drivers/pci/pcie/aer/aerdrv_core.c @@ -623,9 +623,9 @@ void aer_enable_rootport(struct aer_rpc *rpc) set_downstream_devices_error_reporting(pdev, true); /* Enable Root Port's interrupt in response to error messages */ - pci_write_config_dword(pdev, - aer_pos + PCI_ERR_ROOT_COMMAND, - ROOT_PORT_INTR_ON_MESG_MASK); + pci_read_config_dword(pdev, aer_pos + PCI_ERR_ROOT_COMMAND, ®32); + reg32 |= ROOT_PORT_INTR_ON_MESG_MASK; + pci_write_config_dword(pdev, aer_pos + PCI_ERR_ROOT_COMMAND, reg32); } /** @@ -648,7 +648,9 @@ static void disable_root_aer(struct aer_rpc *rpc) pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_ERR); /* Disable Root's interrupt in response to error messages */ - pci_write_config_dword(pdev, pos + PCI_ERR_ROOT_COMMAND, 0); + pci_read_config_dword(pdev, pos + PCI_ERR_ROOT_COMMAND, ®32); + reg32 &= ~ROOT_PORT_INTR_ON_MESG_MASK; + pci_write_config_dword(pdev, pos + PCI_ERR_ROOT_COMMAND, reg32); /* Clear Root's error status reg */ pci_read_config_dword(pdev, pos + PCI_ERR_ROOT_STATUS, ®32); |