On Sunday, May 2, 2021 2:03 PM, Greg Kroah-Hartman gregkh@linuxfoundation.org wrote:
If you could provide backported patches to those kernels you think this is needed to, I can take them directly. Otherwise running sed isn't always the easiest thing to do on my end :)
iwlwifi: Fix softirq/hardirq disabling in iwl_pcie_enqueue_hcmd() upstream commit 2800aadc18a64c96b051bcb7da8a7df7d505db3f, backport for linux-4.14.y (booted and ping tested) Signed-off-by: Jari Ruusu jariruusu@protonmail.com
--- a/drivers/net/wireless/intel/iwlwifi/pcie/tx.c +++ b/drivers/net/wireless/intel/iwlwifi/pcie/tx.c @@ -1473,6 +1473,7 @@ static int iwl_pcie_enqueue_hcmd(struct iwl_trans *trans, u32 cmd_pos; const u8 *cmddata[IWL_MAX_CMD_TBS_PER_TFD]; u16 cmdlen[IWL_MAX_CMD_TBS_PER_TFD]; + unsigned long flags2;
if (WARN(!trans->wide_cmd_header && group_id > IWL_ALWAYS_LONG_GROUP, @@ -1556,10 +1557,10 @@ static int iwl_pcie_enqueue_hcmd(struct iwl_trans *trans, goto free_dup_buf; }
- spin_lock_bh(&txq->lock); + spin_lock_irqsave(&txq->lock, flags2);
if (iwl_queue_space(txq) < ((cmd->flags & CMD_ASYNC) ? 2 : 1)) { - spin_unlock_bh(&txq->lock); + spin_unlock_irqrestore(&txq->lock, flags2);
IWL_ERR(trans, "No space in command queue\n"); iwl_op_mode_cmd_queue_full(trans->op_mode); @@ -1720,7 +1721,7 @@ static int iwl_pcie_enqueue_hcmd(struct iwl_trans *trans, spin_unlock_irqrestore(&trans_pcie->reg_lock, flags);
out: - spin_unlock_bh(&txq->lock); + spin_unlock_irqrestore(&txq->lock, flags2); free_dup_buf: if (idx < 0) kfree(dup_buf);
-- Jari Ruusu 4096R/8132F189 12D6 4C3A DCDA 0AA4 27BD ACDF F073 3C80 8132 F189