diff options
| author |   Cloud Ren <cjren@qca.qualcomm.com> | 2012-07-19 17:01:58 +0000 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2012-07-20 11:21:18 -0700 |
| commit | fa0afcd10951afad2022dda09777d2bf70cdab3d (patch) | |
| tree | 3f74c4d6d407f0b4a23e291ba56652c5f3125522 /drivers/net/ethernet/atheros/atl1c/atl1c_main.c | |
| parent | tun: fix a crash bug and a memory leak (diff) | |
| download | linux-dev-fa0afcd10951afad2022dda09777d2bf70cdab3d.tar.xz linux-dev-fa0afcd10951afad2022dda09777d2bf70cdab3d.zip | |
atl1c: fix issue of io access mode for AR8152 v2.1
When io access mode is enabled by BOOTROM or BIOS for AR8152 v2.1,
the register can't be read/write by memory access mode.
Clearing Bit 8 of Register 0x21c could fixed the issue.
Signed-off-by: Cloud Ren <cjren@qca.qualcomm.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: xiong <xiong@qca.qualcomm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/atheros/atl1c/atl1c_main.c')
| -rw-r--r-- | drivers/net/ethernet/atheros/atl1c/atl1c_main.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/drivers/net/ethernet/atheros/atl1c/atl1c_main.c b/drivers/net/ethernet/atheros/atl1c/atl1c_main.c index 36d3783ebfa0..1bf5bbfe778e 100644 --- a/drivers/net/ethernet/atheros/atl1c/atl1c_main.c +++ b/drivers/net/ethernet/atheros/atl1c/atl1c_main.c @@ -727,6 +727,8 @@ static const struct atl1c_platform_patch plats[] __devinitdata = { static void __devinit atl1c_patch_assign(struct atl1c_hw *hw) { + struct pci_dev *pdev = hw->adapter->pdev; + u32 misc_ctrl; int i = 0; hw->msi_lnkpatch = false; @@ -741,6 +743,18 @@ static void __devinit atl1c_patch_assign(struct atl1c_hw *hw) } i++; } + + if (hw->device_id == PCI_DEVICE_ID_ATHEROS_L2C_B2 && + hw->revision_id == L2CB_V21) { + /* config acess mode */ + pci_write_config_dword(pdev, REG_PCIE_IND_ACC_ADDR, + REG_PCIE_DEV_MISC_CTRL); + pci_read_config_dword(pdev, REG_PCIE_IND_ACC_DATA, &misc_ctrl); + misc_ctrl &= ~0x100; + pci_write_config_dword(pdev, REG_PCIE_IND_ACC_ADDR, + REG_PCIE_DEV_MISC_CTRL); + pci_write_config_dword(pdev, REG_PCIE_IND_ACC_DATA, misc_ctrl); + } } /** * atl1c_sw_init - Initialize general software structures (struct atl1c_adapter) @@ -768,7 +782,7 @@ static int __devinit atl1c_sw_init(struct atl1c_adapter *adapter) hw->device_id = pdev->device; hw->subsystem_vendor_id = pdev->subsystem_vendor; hw->subsystem_id = pdev->subsystem_device; - AT_READ_REG(hw, PCI_CLASS_REVISION, &revision); + pci_read_config_dword(pdev, PCI_CLASS_REVISION, &revision); hw->revision_id = revision & 0xFF; /* before link up, we assume hibernate is true */ hw->hibernate = true; |