diff options
| author | Liad Kaufman <liad.kaufman@intel.com> | 2014-06-01 17:21:33 +0300 |
|---|---|---|
| committer | Emmanuel Grumbach <emmanuel.grumbach@intel.com> | 2014-06-24 21:55:32 +0300 |
| commit | b513ee7fd6dd5ca6498eee99fa46c0d6c0f21c9d (patch) | |
| tree | 3d12c47d5a9bd288373ff4dfbefac8bf6e66a1c7 | |
| parent | 6a68a39fcd3af3f8ae3d185a8a2c8a82cf0363ef (diff) | |
iwlwifi: update trans->hw_rev 8000 hw family format
The format of the CSR_HW_REV register has changed in 8000
HW family. To keep backwards compatibility, we store the
value of this register as usual in trans->hw_rev, only we
store it in the old format in this variable.
Signed-off-by: Liad Kaufman <liad.kaufman@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
| -rw-r--r-- | drivers/net/wireless/iwlwifi/pcie/trans.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/net/wireless/iwlwifi/pcie/trans.c b/drivers/net/wireless/iwlwifi/pcie/trans.c index 0480857ee6e2..5703a3d7799b 100644 --- a/drivers/net/wireless/iwlwifi/pcie/trans.c +++ b/drivers/net/wireless/iwlwifi/pcie/trans.c @@ -1993,6 +1993,16 @@ struct iwl_trans *iwl_trans_pcie_alloc(struct pci_dev *pdev, } trans->hw_rev = iwl_read32(trans, CSR_HW_REV); + /* + * In the 8000 HW family the format of the 4 bytes of CSR_HW_REV have + * changed, and now the revision step also includes bit 0-1 (no more + * "dash" value). To keep hw_rev backwards compatible - we'll store it + * in the old format. + */ + if (trans->cfg->device_family == IWL_DEVICE_FAMILY_8000) + trans->hw_rev = (trans->hw_rev & 0xfff0) | + ((trans->hw_rev << 2) & 0xc); + trans->hw_id = (pdev->device << 16) + pdev->subsystem_device; snprintf(trans->hw_id_str, sizeof(trans->hw_id_str), "PCI ID: 0x%04X:0x%04X", pdev->device, pdev->subsystem_device); |