iwlwifi: fix length check in multi-TB HCMD

As reported by Ben Hutchings, there was a harmless issue in
the checks being done on the lengths of the TBs while
building the TFD for a multi-TB host command.

Cc: stable@[email protected]
Signed-off-by: Emmanuel Grumbach <[email protected]>
Signed-off-by: Johannes Berg <[email protected]>

diff --git a/drivers/net/wireless/iwlwifi/pcie/tx.c b/drivers/net/wireless/iwlwifi/pcie/tx.c
index 8595c16f74deb8bdcf531725e3c65c0986d58745..cb5c6792e3a8de2679022370c140263b8e1e9e57 100644 (file)
--- a/drivers/net/wireless/iwlwifi/pcie/tx.c
+++ b/drivers/net/wireless/iwlwifi/pcie/tx.c
@@ -1264,7 +1264,7 @@ static int iwl_pcie_enqueue_hcmd(struct iwl_trans *trans,
        for (i = 0; i < IWL_MAX_CMD_TBS_PER_TFD; i++) {
                int copy = 0;
 
-               if (!cmd->len)
+               if (!cmd->len[i])
                        continue;
 
                /* need at least IWL_HCMD_SCRATCHBUF_SIZE copied */