scsi: hisi_sas: remove redundant handling to event95 for v3

Event95 is used for DFX purpose. The relevant bit for this interrupt in
the ENT_INT_SRC_MSK3 register has been disabled, so remove the
processing.
Signed-off-by: Xiaofei Tan <tanxiaofei@huawei.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/hisi_sas/hisi_sas_v3_hw.c

@@ -1331,14 +1331,9 @@ static irqreturn_t int_chnl_int_v3_hw(int irq_no, void *p)
 {
 	struct hisi_hba *hisi_hba = p;
 	struct device *dev = hisi_hba->dev;
-	u32 ent_msk, ent_tmp, irq_msk;
+	u32 irq_msk;
 	int phy_no = 0;
 
-	ent_msk = hisi_sas_read32(hisi_hba, ENT_INT_SRC_MSK3);
-	ent_tmp = ent_msk;
-	ent_msk |= ENT_INT_SRC_MSK3_ENT95_MSK_MSK;
-	hisi_sas_write32(hisi_hba, ENT_INT_SRC_MSK3, ent_msk);
-
 	irq_msk = hisi_sas_read32(hisi_hba, CHNL_INT_STATUS)
 				& 0xeeeeeeee;
 
@@ -1415,8 +1410,6 @@ static irqreturn_t int_chnl_int_v3_hw(int irq_no, void *p)
 		phy_no++;
 	}
 
-	hisi_sas_write32(hisi_hba, ENT_INT_SRC_MSK3, ent_tmp);
-
 	return IRQ_HANDLED;
 }