root@anchal:/home/git/kernels/staging# make coccicheck MODE=patch

Please check for false positives in the output before submitting a patch.
When using "patch" mode, carefully review the patch before submitting it.

diff -u -p a/drivers/dma/ioat/dma.c b/drivers/dma/ioat/dma.c
--- a/drivers/dma/ioat/dma.c
+++ b/drivers/dma/ioat/dma.c
@@ -298,10 +298,9 @@ ioat_alloc_ring_ent(struct dma_chan *cha
 	dma_addr_t phys;

 	ioat_dma = to_ioatdma_device(chan->device);
-	hw = pci_pool_alloc(ioat_dma->dma_pool, flags, &phys);
+	hw = pci_pool_zalloc(ioat_dma->dma_pool, flags, &phys);
 	if (!hw)
 		return NULL;
-	memset(hw, 0, sizeof(*hw));

 	desc = kmem_cache_zalloc(ioat_cache, flags);
 	if (!desc) {
diff -u -p a/drivers/dma/zx296702_dma.c b/drivers/dma/zx296702_dma.c
--- a/drivers/dma/zx296702_dma.c
+++ b/drivers/dma/zx296702_dma.c
@@ -435,13 +435,12 @@ static struct zx_dma_desc_sw *zx_alloc_d
 	if (!ds)
 		return NULL;

-	ds->desc_hw = dma_pool_alloc(d->pool, GFP_NOWAIT, &ds->desc_hw_lli);
+	ds->desc_hw = dma_pool_zalloc(d->pool, GFP_NOWAIT, &ds->desc_hw_lli);
 	if (!ds->desc_hw) {
 		dev_dbg(chan->device->dev, "vch %p: dma alloc fail\n", &c->vc);
 		kfree(ds);
 		return NULL;
 	}
-	memset(ds->desc_hw, 0, sizeof(struct zx_desc_hw) * num);
 	ds->desc_num = num;
 	return ds;
 }
diff -u -p a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c
--- a/drivers/scsi/hisi_sas/hisi_sas_main.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_main.c
@@ -205,23 +205,21 @@ static int hisi_sas_task_prep(struct sas
 	slot->port = port;
 	task->lldd_task = slot;

-	slot->status_buffer = dma_pool_alloc(hisi_hba->status_buffer_pool,
-					     GFP_ATOMIC,
-					     &slot->status_buffer_dma);
+	slot->status_buffer = dma_pool_zalloc(hisi_hba->status_buffer_pool,
+					      GFP_ATOMIC,
+					      &slot->status_buffer_dma);
 	if (!slot->status_buffer) {
 		rc = -ENOMEM;
 		goto err_out_slot_buf;
 	}
-	memset(slot->status_buffer, 0, HISI_SAS_STATUS_BUF_SZ);

-	slot->command_table = dma_pool_alloc(hisi_hba->command_table_pool,
-					     GFP_ATOMIC,
-					     &slot->command_table_dma);
+	slot->command_table = dma_pool_zalloc(hisi_hba->command_table_pool,
+					      GFP_ATOMIC,
+					      &slot->command_table_dma);
 	if (!slot->command_table) {
 		rc = -ENOMEM;
 		goto err_out_status_buf;
 	}
-	memset(slot->command_table, 0, HISI_SAS_COMMAND_TABLE_SZ);
 	memset(slot->cmd_hdr, 0, sizeof(struct hisi_sas_cmd_hdr));

 	switch (task->task_proto) {