RDMA/hns: Remove unused abnormal interrupt of type RAS

The HNS NIC driver receives and handles the abnormal interrupt of the RAS
type generated by ROCEE, and the HNS RDMA driver does not need to handle
this type of interrupt. Therefore, delete unused codes in the HNS RDMA
driver.

Link: https://lore.kernel.org/r/20220714134353.16700-2-liangwenpeng@huawei.comSigned-off-by: Haoyue Xu <xuhaoyue1@hisilicon.com>
Signed-off-by: Wenpeng Liang <liangwenpeng@huawei.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>

drivers/infiniband/hw/hns/hns_roce_hw_v2.c

@@ -6013,16 +6013,6 @@ static irqreturn_t hns_roce_v2_msix_interrupt_abn(int irq, void *dev_id)
 		int_en |= 1 << HNS_ROCE_V2_VF_ABN_INT_EN_S;
 		roce_write(hr_dev, ROCEE_VF_ABN_INT_EN_REG, int_en);
 
-		int_work = 1;
-	} else if (int_st & BIT(HNS_ROCE_V2_VF_INT_ST_RAS_INT_S)) {
-		dev_err(dev, "RAS interrupt!\n");
-
-		int_st |= 1 << HNS_ROCE_V2_VF_INT_ST_RAS_INT_S;
-		roce_write(hr_dev, ROCEE_VF_ABN_INT_ST_REG, int_st);
-
-		int_en |= 1 << HNS_ROCE_V2_VF_ABN_INT_EN_S;
-		roce_write(hr_dev, ROCEE_VF_ABN_INT_EN_REG, int_en);
-
 		int_work = 1;
 	} else {
 		dev_err(dev, "There is no abnormal irq found!\n");

drivers/infiniband/hw/hns/hns_roce_hw_v2.h

@@ -1382,7 +1382,6 @@ struct hns_roce_dip {
 #define HNS_ROCE_V2_ASYNC_EQE_NUM		0x1000
 
 #define HNS_ROCE_V2_VF_INT_ST_AEQ_OVERFLOW_S	0
-#define HNS_ROCE_V2_VF_INT_ST_RAS_INT_S		1
 
 #define HNS_ROCE_EQ_DB_CMD_AEQ			0x0
 #define HNS_ROCE_EQ_DB_CMD_AEQ_ARMED		0x1