From b2a58c9712bb1b8744944c0cc54168be27e217f7 Mon Sep 17 00:00:00 2001
From: Sara Sharon <sara.sharon@intel.com>
Date: Sun, 4 Mar 2018 13:09:01 +0200
Subject: [PATCH] iwlwifi: pcie: unionize used bd and completion descriptor
Git-commit: b2a58c9712bb1b8744944c0cc54168be27e217f7
Patch-mainline: v4.19-rc1
References: FATE#326294
This allows less "dummy" declarations and casting.
Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
.../wireless/intel/iwlwifi/pcie/internal.h | 6 +++-
drivers/net/wireless/intel/iwlwifi/pcie/rx.c | 32 +++++--------------
2 files changed, 13 insertions(+), 25 deletions(-)
diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/internal.h b/drivers/net/wireless/intel/iwlwifi/pcie/internal.h
index 90e8a47c8bda..f6726ccef819 100644
--- a/drivers/net/wireless/intel/iwlwifi/pcie/internal.h
+++ b/drivers/net/wireless/intel/iwlwifi/pcie/internal.h
@@ -235,7 +235,11 @@ struct iwl_rxq {
int id;
void *bd;
dma_addr_t bd_dma;
- void *used_bd;
+ union {
+ void *used_bd;
+ __le32 *bd_32;
+ struct iwl_rx_completion_desc *cd;
+ };
dma_addr_t used_bd_dma;
__le16 *tr_tail;
dma_addr_t tr_tail_dma;
diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/rx.c b/drivers/net/wireless/intel/iwlwifi/pcie/rx.c
index 78e7e2d5d290..284946653e27 100644
--- a/drivers/net/wireless/intel/iwlwifi/pcie/rx.c
+++ b/drivers/net/wireless/intel/iwlwifi/pcie/rx.c
@@ -649,7 +649,6 @@ static void iwl_pcie_free_rxq_dma(struct iwl_trans *trans,
struct iwl_rxq *rxq)
{
struct device *dev = trans->dev;
- struct iwl_rx_completion_desc *rx_cd;
bool use_rx_td = (trans->cfg->device_family >=
IWL_DEVICE_FAMILY_22560);
int free_size = iwl_pcie_free_bd_size(trans, use_rx_td);
@@ -671,7 +670,7 @@ static void iwl_pcie_free_rxq_dma(struct iwl_trans *trans,
if (rxq->used_bd)
dma_free_coherent(trans->dev,
- (use_rx_td ? sizeof(*rx_cd) :
+ (use_rx_td ? sizeof(*rxq->cd) :
sizeof(__le32)) * rxq->queue_size,
rxq->used_bd, rxq->used_bd_dma);
rxq->used_bd_dma = 0;
@@ -698,7 +697,6 @@ static int iwl_pcie_alloc_rxq_dma(struct iwl_trans *trans,
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
struct device *dev = trans->dev;
- struct iwl_rx_completion_desc *rx_cd;
int i;
int free_size;
bool use_rx_td = (trans->cfg->device_family >=
@@ -725,7 +723,7 @@ static int iwl_pcie_alloc_rxq_dma(struct iwl_trans *trans,
if (trans->cfg->mq_rx_supported) {
rxq->used_bd = dma_zalloc_coherent(dev,
(use_rx_td ?
- sizeof(*rx_cd) :
+ sizeof(*rxq->cd) :
sizeof(__le32)) *
rxq->queue_size,
&rxq->used_bd_dma,
@@ -1371,18 +1369,10 @@ static void iwl_pcie_rx_handle(struct iwl_trans *trans, int queue)
* to retrieve the vid
*/
if (trans->cfg->device_family >=
- IWL_DEVICE_FAMILY_22560) {
- struct iwl_rx_completion_desc *rx_cd =
- &((struct iwl_rx_completion_desc *)
- rxq->used_bd)[i];
-
- vid = le16_to_cpu(rx_cd->rbid) & 0x0FFF;
- } else {
- __le32 *used =
- &((__le32 *)rxq->used_bd)[i];
-
- vid = le32_to_cpu(*used) & 0x0FFF;
- }
+ IWL_DEVICE_FAMILY_22560)
+ vid = le16_to_cpu(rxq->cd[i].rbid) & 0x0FFF;
+ else
+ vid = le32_to_cpu(rxq->bd_32[i]) & 0x0FFF;
if (WARN(!vid ||
vid > ARRAY_SIZE(trans_pcie->global_table),
@@ -1397,15 +1387,9 @@ static void iwl_pcie_rx_handle(struct iwl_trans *trans, int queue)
goto out;
}
if (trans->cfg->device_family >=
- IWL_DEVICE_FAMILY_22560) {
- struct iwl_rx_completion_desc *rx_cd =
- &((struct iwl_rx_completion_desc *)
- rxq->used_bd)[i];
-
- rxb->size = le32_to_cpu(rx_cd->size) &
+ IWL_DEVICE_FAMILY_22560)
+ rxb->size = le32_to_cpu(rxq->cd[i].size) &
IWL_RX_CD_SIZE;
- }
-
rxb->invalid = true;
} else {
rxb = rxq->queue[i];
--
2.19.2