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authorJason Gunthorpe <jgg@nvidia.com>2025-05-26 15:32:29 -0300
committerJason Gunthorpe <jgg@nvidia.com>2025-05-26 15:33:52 -0300
commitef2233850edc4cc0d5fc6136fcdb004a1ddfa7db (patch)
tree8ccfb0731d7ddf7d384c37b56ee15a22db025c0a /net/core/devmem.c
parent260ce16e579d375ba8f1ac945308343522f98d50 (diff)
parent0ff41df1cb268fc69e703a08a57ee14ae967d0ca (diff)
Merge tag 'v6.15' into rdma.git for-next
Following patches need the RDMA rc branch since we are past the RC cycle now. Merge conflicts resolved based on Linux-next: - For RXE odp changes keep for-next version and fixup new places that need to call is_odp_mr() https://lore.kernel.org/r/20250422143019.500201bd@canb.auug.org.au https://lore.kernel.org/r/20250514122455.3593b083@canb.auug.org.au - irdma is keeping the while/kfree bugfix from -rc and the pf/cdev_info change from for-next https://lore.kernel.org/r/20250513130630.280ee6c5@canb.auug.org.au Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'net/core/devmem.c')
-rw-r--r--net/core/devmem.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/net/core/devmem.c b/net/core/devmem.c
index 6e27a47d0493..2db428ab6b8b 100644
--- a/net/core/devmem.c
+++ b/net/core/devmem.c
@@ -200,6 +200,8 @@ net_devmem_bind_dmabuf(struct net_device *dev, unsigned int dmabuf_fd,
refcount_set(&binding->ref, 1);
+ mutex_init(&binding->lock);
+
binding->dmabuf = dmabuf;
binding->attachment = dma_buf_attach(binding->dmabuf, dev->dev.parent);
@@ -379,6 +381,11 @@ static void mp_dmabuf_devmem_uninstall(void *mp_priv,
xa_for_each(&binding->bound_rxqs, xa_idx, bound_rxq) {
if (bound_rxq == rxq) {
xa_erase(&binding->bound_rxqs, xa_idx);
+ if (xa_empty(&binding->bound_rxqs)) {
+ mutex_lock(&binding->lock);
+ binding->dev = NULL;
+ mutex_unlock(&binding->lock);
+ }
break;
}
}