iwlwifi: pcie: add basic reference accounting
Implement the ref/unref trans ops and track both tx and
host command queues (and hold references while they
are not empty).
Signed-off-by: Eliad Peller <eliadx.peller@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
diff --git a/drivers/net/wireless/iwlwifi/pcie/internal.h b/drivers/net/wireless/iwlwifi/pcie/internal.h
index 1aea6b6..e5652d8 100644
--- a/drivers/net/wireless/iwlwifi/pcie/internal.h
+++ b/drivers/net/wireless/iwlwifi/pcie/internal.h
@@ -318,6 +318,11 @@
/*protect hw register */
spinlock_t reg_lock;
bool cmd_in_flight;
+ bool ref_cmd_in_flight;
+
+ /* protect ref counter */
+ spinlock_t ref_lock;
+ u32 ref_count;
dma_addr_t fw_mon_phys;
struct page *fw_mon_page;
@@ -381,6 +386,9 @@
struct sk_buff_head *skbs);
void iwl_trans_pcie_tx_reset(struct iwl_trans *trans);
+void iwl_trans_pcie_ref(struct iwl_trans *trans);
+void iwl_trans_pcie_unref(struct iwl_trans *trans);
+
static inline u16 iwl_pcie_tfd_tb_get_len(struct iwl_tfd *tfd, u8 idx)
{
struct iwl_tfd_tb *tb = &tfd->tbs[idx];