RDMA/cxgb4: Fix error handling in create_qp()
The variable ret is assigned return values in a couple of places, but
its value is never returned. This patch makes use of the ret variable
so that the caller get correct error codes returned.
The following changes are also introduced:
- The alloc_oc_sq function can return -ENOSYS or -ENOMEM so we want to
get the return value from it.
- Change the label names to improve readability.
Signed-off-by: Emil Goode <emilgoode@gmail.com>
Acked-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
diff --git a/drivers/infiniband/hw/cxgb4/qp.c b/drivers/infiniband/hw/cxgb4/qp.c
index 45aedf1..e2bf9c6 100644
--- a/drivers/infiniband/hw/cxgb4/qp.c
+++ b/drivers/infiniband/hw/cxgb4/qp.c
@@ -137,19 +137,25 @@
return -ENOMEM;
wq->rq.qid = c4iw_get_qpid(rdev, uctx);
- if (!wq->rq.qid)
- goto err1;
+ if (!wq->rq.qid) {
+ ret = -ENOMEM;
+ goto free_sq_qid;
+ }
if (!user) {
wq->sq.sw_sq = kzalloc(wq->sq.size * sizeof *wq->sq.sw_sq,
GFP_KERNEL);
- if (!wq->sq.sw_sq)
- goto err2;
+ if (!wq->sq.sw_sq) {
+ ret = -ENOMEM;
+ goto free_rq_qid;
+ }
wq->rq.sw_rq = kzalloc(wq->rq.size * sizeof *wq->rq.sw_rq,
GFP_KERNEL);
- if (!wq->rq.sw_rq)
- goto err3;
+ if (!wq->rq.sw_rq) {
+ ret = -ENOMEM;
+ goto free_sw_sq;
+ }
}
/*
@@ -157,15 +163,23 @@
*/
wq->rq.rqt_size = roundup_pow_of_two(wq->rq.size);
wq->rq.rqt_hwaddr = c4iw_rqtpool_alloc(rdev, wq->rq.rqt_size);
- if (!wq->rq.rqt_hwaddr)
- goto err4;
+ if (!wq->rq.rqt_hwaddr) {
+ ret = -ENOMEM;
+ goto free_sw_rq;
+ }
if (user) {
- if (alloc_oc_sq(rdev, &wq->sq) && alloc_host_sq(rdev, &wq->sq))
- goto err5;
+ ret = alloc_oc_sq(rdev, &wq->sq);
+ if (ret)
+ goto free_hwaddr;
+
+ ret = alloc_host_sq(rdev, &wq->sq);
+ if (ret)
+ goto free_sq;
} else
- if (alloc_host_sq(rdev, &wq->sq))
- goto err5;
+ ret = alloc_host_sq(rdev, &wq->sq);
+ if (ret)
+ goto free_hwaddr;
memset(wq->sq.queue, 0, wq->sq.memsize);
dma_unmap_addr_set(&wq->sq, mapping, wq->sq.dma_addr);
@@ -173,7 +187,7 @@
wq->rq.memsize, &(wq->rq.dma_addr),
GFP_KERNEL);
if (!wq->rq.queue)
- goto err6;
+ goto free_sq;
PDBG("%s sq base va 0x%p pa 0x%llx rq base va 0x%p pa 0x%llx\n",
__func__, wq->sq.queue,
(unsigned long long)virt_to_phys(wq->sq.queue),
@@ -201,7 +215,7 @@
skb = alloc_skb(wr_len, GFP_KERNEL);
if (!skb) {
ret = -ENOMEM;
- goto err7;
+ goto free_dma;
}
set_wr_txq(skb, CPL_PRIORITY_CONTROL, 0);
@@ -266,33 +280,33 @@
ret = c4iw_ofld_send(rdev, skb);
if (ret)
- goto err7;
+ goto free_dma;
ret = c4iw_wait_for_reply(rdev, &wr_wait, 0, wq->sq.qid, __func__);
if (ret)
- goto err7;
+ goto free_dma;
PDBG("%s sqid 0x%x rqid 0x%x kdb 0x%p squdb 0x%llx rqudb 0x%llx\n",
__func__, wq->sq.qid, wq->rq.qid, wq->db,
(unsigned long long)wq->sq.udb, (unsigned long long)wq->rq.udb);
return 0;
-err7:
+free_dma:
dma_free_coherent(&(rdev->lldi.pdev->dev),
wq->rq.memsize, wq->rq.queue,
dma_unmap_addr(&wq->rq, mapping));
-err6:
+free_sq:
dealloc_sq(rdev, &wq->sq);
-err5:
+free_hwaddr:
c4iw_rqtpool_free(rdev, wq->rq.rqt_hwaddr, wq->rq.rqt_size);
-err4:
+free_sw_rq:
kfree(wq->rq.sw_rq);
-err3:
+free_sw_sq:
kfree(wq->sq.sw_sq);
-err2:
+free_rq_qid:
c4iw_put_qpid(rdev, wq->rq.qid, uctx);
-err1:
+free_sq_qid:
c4iw_put_qpid(rdev, wq->sq.qid, uctx);
- return -ENOMEM;
+ return ret;
}
static int build_immd(struct t4_sq *sq, struct fw_ri_immd *immdp,