linux-kernel - [PATCH 13/15] scsi: hisi_sas: Remove some unnecessary code

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Message-ID: <1565012892-75940-14-git-send-email-john.garry@huawei.com>
Date:   Mon, 5 Aug 2019 21:48:10 +0800
From:   John Garry <john.garry@...wei.com>
To:     <jejb@...ux.vnet.ibm.com>, <martin.petersen@...cle.com>
CC:     <linuxarm@...wei.com>, <linux-kernel@...r.kernel.org>,
        <linux-scsi@...r.kernel.org>,
        Xiang Chen <chenxiang66@...ilicon.com>,
        "John Garry" <john.garry@...wei.com>
Subject: [PATCH 13/15] scsi: hisi_sas: Remove some unnecessary code

From: Xiang Chen <chenxiang66@...ilicon.com>

Remove some unnecessary code, including:
- Explicit zeroing of memory allocated for dmam_alloc_coherent()
- Some duplicated code
- Some redundant masking

Signed-off-by: Xiang Chen <chenxiang66@...ilicon.com>
Signed-off-by: John Garry <john.garry@...wei.com>
---
 drivers/scsi/hisi_sas/hisi_sas_main.c  | 5 ++---
 drivers/scsi/hisi_sas/hisi_sas_v3_hw.c | 5 +----
 2 files changed, 3 insertions(+), 7 deletions(-)

diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c
index be15280343d1..e1c52811f4c7 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_main.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_main.c
@@ -2358,7 +2358,7 @@ 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_ZERO);
+					     GFP_KERNEL);
 	if (!hisi_hba->itct)
 		goto err_out;
 
@@ -2385,7 +2385,7 @@ int hisi_sas_alloc(struct hisi_hba *hisi_hba)
 		void *buf;
 
 		buf = dmam_alloc_coherent(dev, s, &buf_dma,
-					  GFP_KERNEL | __GFP_ZERO);
+					  GFP_KERNEL);
 		if (!buf)
 			goto err_out;
 
@@ -2434,7 +2434,6 @@ int hisi_sas_alloc(struct hisi_hba *hisi_hba)
 					GFP_KERNEL);
 	if (!hisi_hba->sata_breakpoint)
 		goto err_out;
-	hisi_sas_init_mem(hisi_hba);
 
 	hisi_sas_slot_index_init(hisi_hba);
 	hisi_hba->last_slot_index = HISI_SAS_UNRESERVED_IPTT;
diff --git a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
index 3cc53e5b92f2..db8c7e4b1954 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
@@ -1914,7 +1914,7 @@ static void fatal_ecc_int_v3_hw(struct hisi_hba *hisi_hba)
 	u32 irq_value, irq_msk;
 
 	irq_msk = hisi_sas_read32(hisi_hba, SAS_ECC_INTR_MSK);
-	hisi_sas_write32(hisi_hba, SAS_ECC_INTR_MSK, irq_msk | 0xffffffff);
+	hisi_sas_write32(hisi_hba, SAS_ECC_INTR_MSK, 0xffffffff);
 
 	irq_value = hisi_sas_read32(hisi_hba, SAS_ECC_INTR);
 	if (irq_value)
@@ -3008,8 +3008,6 @@ hisi_sas_shost_alloc_pci(struct pci_dev *pdev)
 	else
 		hisi_hba->prot_mask = prot_mask;
 
-	timer_setup(&hisi_hba->timer, NULL, 0);
-
 	if (hisi_sas_get_fw_info(hisi_hba) < 0)
 		goto err_out;
 
@@ -3099,7 +3097,6 @@ hisi_sas_v3_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 	sha->lldd_module = THIS_MODULE;
 	sha->sas_addr = &hisi_hba->sas_addr[0];
 	sha->num_phys = hisi_hba->n_phy;
-	sha->core.shost = hisi_hba->shost;
 
 	for (i = 0; i < hisi_hba->n_phy; i++) {
 		sha->sas_phy[i] = &hisi_hba->phy[i].sas_phy;
-- 
2.17.1