RDMA/hns: Fix incorrect clearing of interrupt status register

[ Upstream commit ecb4db5c3590aa956b4b2c352081a5b632d1f9f9 ]

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>
Signed-off-by: Sasha Levin <sashal@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 bf01210c56c23bce81041ad1d388180931c0145c..1dbad159f37924970d678fa1cc8f5ca36c5a67d6 100644 (file)
--- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
+++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
@@ -5854,8 +5854,8 @@ 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)