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PCI: aerdrv: RsvdP of PCI_ERR_ROOT_COMMAND

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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>
This commit is contained in:
Hidetoshi Seto
2010-04-15 13:09:13 +09:00
committed by Jesse Barnes
parent d4dfd7278e
commit c6d34eddec
2 changed files with 17 additions and 11 deletions
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10
drivers/pci/pcie/aer/aerdrv_core.c
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@@ -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, &reg32);
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, &reg32);
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, &reg32);