From c6d34eddecb34fd84f9fb2ea26a63cfde5662f49 Mon Sep 17 00:00:00 2001 From: Hidetoshi Seto Date: Thu, 15 Apr 2010 13:09:13 +0900 Subject: PCI: aerdrv: RsvdP of PCI_ERR_ROOT_COMMAND Handle preserved bits properly. Signed-off-by: Hidetoshi Seto Reviewed-by: Kenji Kaneshige Signed-off-by: Jesse Barnes --- drivers/pci/pcie/aer/aerdrv_core.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) (limited to 'drivers/pci/pcie/aer/aerdrv_core.c') diff --git a/drivers/pci/pcie/aer/aerdrv_core.c b/drivers/pci/pcie/aer/aerdrv_core.c index aceb04b67b60..9754a09bf20e 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); -- cgit v1.2.3