diff options
Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/pcie/trans.c')
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/pcie/trans.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/trans.c b/drivers/net/wireless/intel/iwlwifi/pcie/trans.c index 51012435e39b..93e10d7d12fb 100644 --- a/drivers/net/wireless/intel/iwlwifi/pcie/trans.c +++ b/drivers/net/wireless/intel/iwlwifi/pcie/trans.c @@ -2288,6 +2288,8 @@ out: static int iwl_trans_pcie_read_mem(struct iwl_trans *trans, u32 addr, void *buf, int dwords) { +#define IWL_MAX_HW_ERRS 5 + unsigned int num_consec_hw_errors = 0; int offs = 0; u32 *vals = buf; @@ -2303,6 +2305,17 @@ static int iwl_trans_pcie_read_mem(struct iwl_trans *trans, u32 addr, while (offs < dwords) { vals[offs] = iwl_read32(trans, HBUS_TARG_MEM_RDAT); + + if (iwl_trans_is_hw_error_value(vals[offs])) + num_consec_hw_errors++; + else + num_consec_hw_errors = 0; + + if (num_consec_hw_errors >= IWL_MAX_HW_ERRS) { + iwl_trans_release_nic_access(trans); + return -EIO; + } + offs++; if (time_after(jiffies, end)) { |