From 26889e5ec87a0e4ef31ba2dc4f60933be0dbdffe Mon Sep 17 00:00:00 2001 From: John Garry Date: Fri, 25 Jan 2019 22:22:37 +0800 Subject: [PATCH] scsi: hisi_sas: Some misc tidy-up Sparse detected some problems in the driver, so tidy them up. Signed-off-by: John Garry Signed-off-by: Martin K. Petersen --- drivers/scsi/hisi_sas/hisi_sas_main.c | 33 ++++++++++++++++++--------- 1 file changed, 22 insertions(+), 11 deletions(-) diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c index 6841a594fd5d..445f8eee93d2 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_main.c +++ b/drivers/scsi/hisi_sas/hisi_sas_main.c @@ -2075,14 +2075,18 @@ static struct sas_domain_function_template hisi_sas_transport_ops = { void hisi_sas_init_mem(struct hisi_hba *hisi_hba) { - int i, s, max_command_entries = hisi_hba->hw->max_command_entries; + int i, s, j, max_command_entries = hisi_hba->hw->max_command_entries; + struct hisi_sas_breakpoint *sata_breakpoint = hisi_hba->sata_breakpoint; for (i = 0; i < hisi_hba->queue_count; i++) { struct hisi_sas_cq *cq = &hisi_hba->cq[i]; struct hisi_sas_dq *dq = &hisi_hba->dq[i]; + struct hisi_sas_cmd_hdr *cmd_hdr = hisi_hba->cmd_hdr[i]; + + s = sizeof(struct hisi_sas_cmd_hdr); + for (j = 0; j < HISI_SAS_QUEUE_SLOTS; j++) + memset(&cmd_hdr[j], 0, s); - s = sizeof(struct hisi_sas_cmd_hdr) * HISI_SAS_QUEUE_SLOTS; - memset(hisi_hba->cmd_hdr[i], 0, s); dq->wr_point = 0; s = hisi_hba->hw->complete_hdr_size * HISI_SAS_QUEUE_SLOTS; @@ -2099,8 +2103,9 @@ void hisi_sas_init_mem(struct hisi_hba *hisi_hba) s = max_command_entries * sizeof(struct hisi_sas_breakpoint); memset(hisi_hba->breakpoint, 0, s); - s = HISI_SAS_MAX_ITCT_ENTRIES * sizeof(struct hisi_sas_sata_breakpoint); - memset(hisi_hba->sata_breakpoint, 0, s); + s = sizeof(struct hisi_sas_sata_breakpoint); + for (j = 0; j < HISI_SAS_MAX_ITCT_ENTRIES; j++) + memset(&sata_breakpoint[j], 0, s); } EXPORT_SYMBOL_GPL(hisi_sas_init_mem); @@ -2157,10 +2162,9 @@ int hisi_sas_alloc(struct hisi_hba *hisi_hba) s = HISI_SAS_MAX_ITCT_ENTRIES * sizeof(struct hisi_sas_itct); hisi_hba->itct = dmam_alloc_coherent(dev, s, &hisi_hba->itct_dma, - GFP_KERNEL); + GFP_KERNEL | __GFP_ZERO); if (!hisi_hba->itct) goto err_out; - memset(hisi_hba->itct, 0, s); hisi_hba->slot_info = devm_kcalloc(dev, max_command_entries, sizeof(struct hisi_sas_slot), @@ -2501,10 +2505,17 @@ static void hisi_sas_debugfs_snapshot_dq_reg(struct hisi_hba *hisi_hba) int queue_entry_size = sizeof(struct hisi_sas_cmd_hdr); int i; - for (i = 0; i < hisi_hba->queue_count; i++) - memcpy(hisi_hba->debugfs_cmd_hdr[i], - hisi_hba->cmd_hdr[i], - HISI_SAS_QUEUE_SLOTS * queue_entry_size); + for (i = 0; i < hisi_hba->queue_count; i++) { + struct hisi_sas_cmd_hdr *debugfs_cmd_hdr, *cmd_hdr; + int j; + + debugfs_cmd_hdr = hisi_hba->debugfs_cmd_hdr[i]; + cmd_hdr = hisi_hba->cmd_hdr[i]; + + for (j = 0; j < HISI_SAS_QUEUE_SLOTS; j++) + memcpy(&debugfs_cmd_hdr[j], &cmd_hdr[j], + queue_entry_size); + } } static void hisi_sas_debugfs_snapshot_port_reg(struct hisi_hba *hisi_hba) -- 2.30.2