[PATCH v3] IB/srpt: Remove WARN_ON from srpt_cm_req_recv

[PATCH v3] IB/srpt: Remove WARN_ON from srpt_cm_req_recv

[Jing Xiangfeng]

The callers pass the pointer '&req' or 'private_data' to
srpt_cm_req_recv(), and 'private_data' is initialized in srp_send_req().
'sdev' is allocated and stored in srpt_add_one(). It's easy to show that
sdev and req are always valid. So we remove unnecessary WARN_ON.

Signed-off-by: Jing Xiangfeng <jingxiangfeng@huawei.com>
---
 drivers/infiniband/ulp/srpt/ib_srpt.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/drivers/infiniband/ulp/srpt/ib_srpt.c b/drivers/infiniband/ulp/srpt/ib_srpt.c
index ef7fcd3..0fa65c6 100644
--- a/drivers/infiniband/ulp/srpt/ib_srpt.c
+++ b/drivers/infiniband/ulp/srpt/ib_srpt.c
@@ -2156,9 +2156,6 @@ static int srpt_cm_req_recv(struct srpt_device *const sdev,
 
 	WARN_ON_ONCE(irqs_disabled());
 
-	if (WARN_ON(!sdev || !req))
-		return -EINVAL;
-
 	it_iu_len = be32_to_cpu(req->req_it_iu_len);
 
 	pr_info("Received SRP_LOGIN_REQ with i_port_id %pI6, t_port_id %pI6 and it_iu_len %d on port %d (guid=%pI6); pkey %#04x\n",
-- 
1.8.3.1

Re: [PATCH v3] IB/srpt: Remove WARN_ON from srpt_cm_req_recv

[Bart Van Assche]

On 2020-06-17 07:08, Jing Xiangfeng wrote:
> The callers pass the pointer '&req' or 'private_data' to
> srpt_cm_req_recv(), and 'private_data' is initialized in srp_send_req().
> 'sdev' is allocated and stored in srpt_add_one(). It's easy to show that
> sdev and req are always valid. So we remove unnecessary WARN_ON.

Reviewed-by: Bart Van Assche <bvanassche@acm.org>

Re: [PATCH v3] IB/srpt: Remove WARN_ON from srpt_cm_req_recv

[Jason Gunthorpe]

On Wed, Jun 17, 2020 at 10:08:03PM +0800, Jing Xiangfeng wrote:
> The callers pass the pointer '&req' or 'private_data' to
> srpt_cm_req_recv(), and 'private_data' is initialized in srp_send_req().
> 'sdev' is allocated and stored in srpt_add_one(). It's easy to show that
> sdev and req are always valid. So we remove unnecessary WARN_ON.
> 
> Signed-off-by: Jing Xiangfeng <jingxiangfeng@huawei.com>
> Reviewed-by: Bart Van Assche <bvanassche@acm.org>
> ---
>  drivers/infiniband/ulp/srpt/ib_srpt.c | 3 ---
>  1 file changed, 3 deletions(-)

Applied to for-next, thanks

Jason