From: Leon Romanovsky <leonro@nvidia.com>
Date: Fri, 13 Feb 2026 10:57:42 +0000 (+0200)
Subject: RDMA/efa: Rely on CPU address in create‑QP
X-Git-Tag: v7.1-rc1~75^2~104
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=2ead7b09bc92921ba4a465af5de90197b353c2c8;p=thirdparty%2Fkernel%2Flinux.git

RDMA/efa: Rely on CPU address in create‑QP

Align this code with other locations where efa_free_mapped() depends on the
presence of a valid CPU address, which is guaranteed when qp->rq_size != 0.

Link: https://patch.msgid.link/20260213-refactor-umem-v1-6-f3be85847922@nvidia.com
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
---

diff --git a/drivers/infiniband/hw/efa/efa_verbs.c b/drivers/infiniband/hw/efa/efa_verbs.c
index 7180d31218c5..776ae5103706 100644
--- a/drivers/infiniband/hw/efa/efa_verbs.c
+++ b/drivers/infiniband/hw/efa/efa_verbs.c
@@ -579,7 +579,7 @@ static int qp_mmap_entries_setup(struct efa_qp *qp,
 
 	resp->llq_desc_offset &= ~PAGE_MASK;
 
-	if (qp->rq_size) {
+	if (qp->rq_cpu_addr) {
 		address = dev->db_bar_addr + resp->rq_db_offset;
 
 		qp->rq_db_mmap_entry =
@@ -828,7 +828,7 @@ err_remove_mmap_entries:
 err_destroy_qp:
 	efa_destroy_qp_handle(dev, create_qp_resp.qp_handle);
 err_free_mapped:
-	if (qp->rq_size)
+	if (qp->rq_cpu_addr)
 		efa_free_mapped(dev, qp->rq_cpu_addr, qp->rq_dma_addr,
 				qp->rq_size, DMA_TO_DEVICE);
 err_out: