RDMA/hns: Fix incorrect clearing of interrupt status register

The driver will clear all the interrupts in the same area
when the driver handles the interrupt of type AEQ overflow.
It should only set the interrupt status bit of type AEQ overflow.

Fixes: a5073d6054f7 ("RDMA/hns: Add eq support of hip08")
Link: https://lore.kernel.org/r/20220714134353.16700-4-liangwenpeng@huawei.com
Signed-off-by: Haoyue Xu <xuhaoyue1@hisilicon.com>
Signed-off-by: Wenpeng Liang <liangwenpeng@huawei.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>

diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
index bb60736..35bf58f 100644 (file)
--- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
+++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
@@ -6001,8 +6001,8 @@ static irqreturn_t hns_roce_v2_msix_interrupt_abn(int irq, void *dev_id)
 
                dev_err(dev, "AEQ overflow!\n");
 
-               int_st |= 1 << HNS_ROCE_V2_VF_INT_ST_AEQ_OVERFLOW_S;
-               roce_write(hr_dev, ROCEE_VF_ABN_INT_ST_REG, int_st);
+               roce_write(hr_dev, ROCEE_VF_ABN_INT_ST_REG,
+                          1 << HNS_ROCE_V2_VF_INT_ST_AEQ_OVERFLOW_S);
 
                /* Set reset level for reset_event() */
                if (ops->set_default_reset_request)