linux-kernel - [PATCH v2] scsi: RDMA/srpt: remove unnecessary assertion in srpt_queue

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Date:   Tue, 17 Dec 2019 13:44:37 -0600
From:   Aditya Pakki <pakki001@....edu>
To:     pakki001@....edu
Cc:     kjlu@....edu, Bart Van Assche <bvanassche@....org>,
        Doug Ledford <dledford@...hat.com>,
        Jason Gunthorpe <jgg@...pe.ca>, linux-rdma@...r.kernel.org,
        target-devel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2] scsi: RDMA/srpt: remove unnecessary assertion in srpt_queue_response

Currently, BUG_ON in srpt_queue_response, is used as an assertion for
empty rdma channel. However, if the channel is NULL, the call trace
on console is sufficient for diagnosis.

Signed-off-by: Aditya Pakki <pakki001@....edu>
---
v1: Avoid potential NULL pointer derefernce of ch. Current fix
suggested by Bart Van Assche
---
 drivers/infiniband/ulp/srpt/ib_srpt.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/infiniband/ulp/srpt/ib_srpt.c b/drivers/infiniband/ulp/srpt/ib_srpt.c
index 23c782e3d49a..98552749d71c 100644
--- a/drivers/infiniband/ulp/srpt/ib_srpt.c
+++ b/drivers/infiniband/ulp/srpt/ib_srpt.c
@@ -2810,8 +2810,6 @@ static void srpt_queue_response(struct se_cmd *cmd)
 	int resp_len, ret, i;
 	u8 srp_tm_status;
 
-	BUG_ON(!ch);
-
 	state = ioctx->state;
 	switch (state) {
 	case SRPT_STATE_NEW:
-- 
2.20.1