From: Jiri Kosina <jkosina@xxxxxxx>
commit e7020bb068d8be50a92f48e36b236a1a1ef9282e upstream.
Analogically to what we did in 2800aadc18a6 ("iwlwifi: Fix softirq/hardirq
disabling in iwl_pcie_enqueue_hcmd()"), we must apply the same fix to
iwl_pcie_gen2_enqueue_hcmd(), as it's being called from exactly the same
contexts.
Reported-by: Heiner Kallweit <hkallweit1@xxxxxxxxx
Signed-off-by: Jiri Kosina <jkosina@xxxxxxx>
Signed-off-by: Kalle Valo <kvalo@xxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/nycvar.YFH.7.76.2104171112390.18270@xxxxxxxxxxxxx
Signed-off-by: Jari Ruusu <jariruusu@xxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/net/wireless/intel/iwlwifi/pcie/tx-gen2.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
--- a/drivers/net/wireless/intel/iwlwifi/pcie/tx-gen2.c
+++ b/drivers/net/wireless/intel/iwlwifi/pcie/tx-gen2.c
@@ -705,6 +705,7 @@ static int iwl_pcie_gen2_enqueue_hcmd(st
const u8 *cmddata[IWL_MAX_CMD_TBS_PER_TFD];
u16 cmdlen[IWL_MAX_CMD_TBS_PER_TFD];
struct iwl_tfh_tfd *tfd;
+ unsigned long flags2;
copy_size = sizeof(struct iwl_cmd_header_wide);
cmd_size = sizeof(struct iwl_cmd_header_wide);
@@ -773,14 +774,14 @@ static int iwl_pcie_gen2_enqueue_hcmd(st
goto free_dup_buf;
}
- spin_lock_bh(&txq->lock);
+ spin_lock_irqsave(&txq->lock, flags2);
idx = iwl_pcie_get_cmd_index(txq, txq->write_ptr);
tfd = iwl_pcie_get_tfd(trans, txq, txq->write_ptr);
memset(tfd, 0, sizeof(*tfd));
if (iwl_queue_space(trans, 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);
@@ -915,7 +916,7 @@ static int iwl_pcie_gen2_enqueue_hcmd(st
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);
