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| author | Sara Sharon <sara.sharon@intel.com> | 2016-05-04 14:22:10 +0300 |
|---|---|---|
| committer | Luca Coelho <luciano.coelho@intel.com> | 2016-07-06 00:33:06 +0300 |
| commit | f43495fd5e37b2ef4a187974011ff439e6354053 (patch) | |
| tree | e8f620d1e8345baa079288d2c0aa4c09a163ec65 | |
| parent | 2047fa5401918a1e3bc0ec8923de2570265d1d78 (diff) | |
| download | linux-f43495fd5e37b2ef4a187974011ff439e6354053.tar.xz | |
iwlwifi: mvm: fix possible division by zero
Theoretically we may get only one IRQ from OS, in which
case we will have only 1 queue even in MSIx mode.
This will cause division by zero in the indirection table
calculation.
We do not need send the command in that case, as there is
only one queue so all RX traffic will be directed to it
anyway. Bail out early if there is only one queue.
Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/mvm/fw.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/fw.c b/drivers/net/wireless/intel/iwlwifi/mvm/fw.c index 7057f35cb2e7..0a5490c46d2e 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/fw.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/fw.c @@ -122,6 +122,9 @@ static int iwl_send_rss_cfg_cmd(struct iwl_mvm *mvm) IWL_RSS_HASH_TYPE_IPV6_PAYLOAD, }; + if (mvm->trans->num_rx_queues == 1) + return 0; + /* Do not direct RSS traffic to Q 0 which is our fallback queue */ for (i = 0; i < ARRAY_SIZE(cmd.indirection_table); i++) cmd.indirection_table[i] = |