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RDMA/hns: Move spin_lock_irqsave to the correct place

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When hip08 set gid, it will call spin_unlock_bh when send cmq.  if main.ko
call spin_lock_irqsave firstly, and the kernel is before commit
f71b74bca6 ("irq/softirqs: Use lockdep to assert IRQs are
disabled/enabled"), it will cause WARN_ON_ONCE because of calling
spin_unlock_bh in disable context.

In fact, the spin_lock_irqsave in main.ko is only used for hip06, and
should be placed in hns_roce_hw_v1.c. hns_roce_hw_v2.c uses its own
spin_unlock_bh and does not need main.ko manage spin_lock.

Signed-off-by: Lang Cheng <chenglang@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Lang Cheng 2019-05-24 15:31:22 +08:00 committed by Jason Gunthorpe
parent 0502849d0b
commit 780f33962e
2 changed files with 5 additions and 10 deletions
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5
drivers/infiniband/hw/hns/hns_roce_hw_v1.c
View File

@ -1741,11 +1741,14 @@ static int hns_roce_v1_set_gid(struct hns_roce_dev *hr_dev, u8 port,
int gid_index, const union ib_gid *gid,
const struct ib_gid_attr *attr)
{
unsigned long flags;
u32 *p = NULL;
u8 gid_idx = 0;
gid_idx = hns_get_gid_index(hr_dev, port, gid_index);
spin_lock_irqsave(&hr_dev->iboe.lock, flags);
p = (u32 *)&gid->raw[0];
roce_raw_write(*p, hr_dev->reg_base + ROCEE_PORT_GID_L_0_REG +
(HNS_ROCE_V1_GID_NUM * gid_idx));
@ -1762,6 +1765,8 @@ static int hns_roce_v1_set_gid(struct hns_roce_dev *hr_dev, u8 port,
roce_raw_write(*p, hr_dev->reg_base + ROCEE_PORT_GID_H_0_REG +
(HNS_ROCE_V1_GID_NUM * gid_idx));
spin_unlock_irqrestore(&hr_dev->iboe.lock, flags);
return 0;
}

10
drivers/infiniband/hw/hns/hns_roce_main.c
View File

@ -78,18 +78,13 @@ static int hns_roce_add_gid(const struct ib_gid_attr *attr, void **context)
{
struct hns_roce_dev *hr_dev = to_hr_dev(attr->device);
u8 port = attr->port_num - 1;
unsigned long flags;
int ret;
if (port >= hr_dev->caps.num_ports)
return -EINVAL;
spin_lock_irqsave(&hr_dev->iboe.lock, flags);
ret = hr_dev->hw->set_gid(hr_dev, port, attr->index, &attr->gid, attr);
spin_unlock_irqrestore(&hr_dev->iboe.lock, flags);
return ret;
}
@ -98,18 +93,13 @@ static int hns_roce_del_gid(const struct ib_gid_attr *attr, void **context)
struct hns_roce_dev *hr_dev = to_hr_dev(attr->device);
struct ib_gid_attr zattr = { };
u8 port = attr->port_num - 1;
unsigned long flags;
int ret;
if (port >= hr_dev->caps.num_ports)
return -EINVAL;
spin_lock_irqsave(&hr_dev->iboe.lock, flags);
ret = hr_dev->hw->set_gid(hr_dev, port, attr->index, &zgid, &zattr);
spin_unlock_irqrestore(&hr_dev->iboe.lock, flags);
return ret;
}