diff options
| author | Emmanuel Grumbach <emmanuel.grumbach@intel.com> | 2021-02-10 13:56:35 +0200 |
|---|---|---|
| committer | Luca Coelho <luciano.coelho@intel.com> | 2021-02-10 14:37:30 +0200 |
| commit | 9cf671d60fdbeb8f875859c11148cf13c326ada2 (patch) | |
| tree | 383c4ac34aea903a6e1a95f23e1717c4dee11bb6 | |
| parent | 28db1862067cb09ebfdccfbc129a52c6fdb4c4d7 (diff) | |
iwlwifi: pcie: NULLify pointers after free
Remember that those pointers have been freed by setting them
to NULL. Otherwise, we'd keep rxq pointing to random memory
which would prevent us from trying to re-allocate the Rx
resources if we call rx_alloc again.
Also, propagate the allocation failure to the caller of
iwl_pcie_nic_init so that we won't go further in the
start flow.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20210210135352.996b400d2f1c.I630379c504644700322f57b259383ae0af8d1975@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/pcie/rx.c | 3 | ||||
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/pcie/trans.c | 8 |
2 files changed, 9 insertions, 2 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/rx.c b/drivers/net/wireless/intel/iwlwifi/pcie/rx.c index 407809c7e958..664481ca58c9 100644 --- a/drivers/net/wireless/intel/iwlwifi/pcie/rx.c +++ b/drivers/net/wireless/intel/iwlwifi/pcie/rx.c @@ -834,8 +834,11 @@ err: trans_pcie->base_rb_stts_dma = 0; } kfree(trans_pcie->rx_pool); + trans_pcie->rx_pool = NULL; kfree(trans_pcie->global_table); + trans_pcie->global_table = NULL; kfree(trans_pcie->rxq); + trans_pcie->rxq = NULL; return ret; } diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/trans.c b/drivers/net/wireless/intel/iwlwifi/pcie/trans.c index a73f2c54d446..c0d2221a18a9 100644 --- a/drivers/net/wireless/intel/iwlwifi/pcie/trans.c +++ b/drivers/net/wireless/intel/iwlwifi/pcie/trans.c @@ -523,11 +523,15 @@ static int iwl_pcie_nic_init(struct iwl_trans *trans) iwl_op_mode_nic_config(trans->op_mode); /* Allocate the RX queue, or reset if it is already allocated */ - iwl_pcie_rx_init(trans); + ret = iwl_pcie_rx_init(trans); + if (ret) + return ret; /* Allocate or reset and init all Tx and Command queues */ - if (iwl_pcie_tx_init(trans)) + if (iwl_pcie_tx_init(trans)) { + iwl_pcie_rx_free(trans); return -ENOMEM; + } if (trans->trans_cfg->base_params->shadow_reg_enable) { /* enable shadow regs in HW */ |