dmaengine: idxd: convert ats_dis to a wq flag

Make wq attributes access consistent. Convert ats_dis to wq flag
WQ_FLAG_ATS_DISABLE.
Signed-off-by: NDave Jiang <dave.jiang@intel.com>
Co-developed-by: NFenghua Yu <fenghua.yu@intel.com>
Signed-off-by: NFenghua Yu <fenghua.yu@intel.com>
Link: https://lore.kernel.org/r/20220917161222.2835172-2-fenghua.yu@intel.comSigned-off-by: NVinod Koul <vkoul@kernel.org>

drivers/dma/idxd/device.c

@@ -384,10 +384,10 @@ static void idxd_wq_disable_cleanup(struct idxd_wq *wq)
 	wq->type = IDXD_WQT_NONE;
 	wq->threshold = 0;
 	wq->priority = 0;
-	wq->ats_dis = 0;
 	wq->enqcmds_retries = IDXD_ENQCMDS_RETRIES;
 	clear_bit(WQ_FLAG_DEDICATED, &wq->flags);
 	clear_bit(WQ_FLAG_BLOCK_ON_FAULT, &wq->flags);
+	clear_bit(WQ_FLAG_ATS_DISABLE, &wq->flags);
 	memset(wq->name, 0, WQ_NAME_SIZE);
 	wq->max_xfer_bytes = WQ_DEFAULT_MAX_XFER;
 	wq->max_batch_size = WQ_DEFAULT_MAX_BATCH;
@@ -861,7 +861,7 @@ static int idxd_wq_config_write(struct idxd_wq *wq)
 		wq->wqcfg->bof = 1;
 
 	if (idxd->hw.wq_cap.wq_ats_support)
-		wq->wqcfg->wq_ats_disable = wq->ats_dis;
+		wq->wqcfg->wq_ats_disable = test_bit(WQ_FLAG_ATS_DISABLE, &wq->flags);
 
 	/* bytes 12-15 */
 	wq->wqcfg->max_xfer_shift = ilog2(wq->max_xfer_bytes);

drivers/dma/idxd/idxd.h

@@ -133,6 +133,7 @@ enum idxd_wq_state {
 enum idxd_wq_flag {
 	WQ_FLAG_DEDICATED = 0,
 	WQ_FLAG_BLOCK_ON_FAULT,
+	WQ_FLAG_ATS_DISABLE,
 };
 
 enum idxd_wq_type {
@@ -209,7 +210,6 @@ struct idxd_wq {
 	char name[WQ_NAME_SIZE + 1];
 	u64 max_xfer_bytes;
 	u32 max_batch_size;
-	bool ats_dis;
 };
 
 struct idxd_engine {

drivers/dma/idxd/sysfs.c

@@ -973,7 +973,7 @@ static ssize_t wq_ats_disable_show(struct device *dev, struct device_attribute *
 {
 	struct idxd_wq *wq = confdev_to_wq(dev);
 
-	return sysfs_emit(buf, "%u\n", wq->ats_dis);
+	return sysfs_emit(buf, "%u\n", test_bit(WQ_FLAG_ATS_DISABLE, &wq->flags));
 }
 
 static ssize_t wq_ats_disable_store(struct device *dev, struct device_attribute *attr,
@@ -994,7 +994,10 @@ static ssize_t wq_ats_disable_store(struct device *dev, struct device_attribute
 	if (rc < 0)
 		return rc;
 
-	wq->ats_dis = ats_dis;
+	if (ats_dis)
+		set_bit(WQ_FLAG_ATS_DISABLE, &wq->flags);
+	else
+		clear_bit(WQ_FLAG_ATS_DISABLE, &wq->flags);
 
 	return count;
 }