git: 330e4f6acbdc - main - powerpc: create a tag with the parents implementation if supplied

The branch main has been updated by adrian:

URL: https://cgit.FreeBSD.org/src/commit/?id=330e4f6acbdc360c0dc466f4d54bc63e663d307a

commit 330e4f6acbdc360c0dc466f4d54bc63e663d307a
Author:     Adrian Chadd <adrian@FreeBSD.org>
AuthorDate: 2026-02-15 02:10:31 +0000
Commit:     Adrian Chadd <adrian@FreeBSD.org>
CommitDate: 2026-05-01 21:14:31 +0000

    powerpc: create a tag with the parents implementation if supplied
    
    If a parent tag is supplied then use its implementation.
    
    Differential Revision:  https://reviews.freebsd.org/D55314
---
 sys/powerpc/powerpc/busdma_machdep.c | 17 +++++++++++++----
 1 file changed, 13 insertions(+), 4 deletions(-)

diff --git a/sys/powerpc/powerpc/busdma_machdep.c b/sys/powerpc/powerpc/busdma_machdep.c
index 5118a8847375..8e73e303cb11 100644
--- a/sys/powerpc/powerpc/busdma_machdep.c
+++ b/sys/powerpc/powerpc/busdma_machdep.c
@@ -71,15 +71,24 @@ bus_dma_tag_create(bus_dma_tag_t parent, bus_size_t alignment,
 		   bus_size_t maxsegsz, int flags, bus_dma_lock_t *lockfunc,
 		   void *lockfuncarg, bus_dma_tag_t *dmat)
 {
+	struct bus_dma_tag_common *tc;
+	int error;
 
 	/* Filters are no longer supported. */
 	if (filter != NULL || filterarg != NULL)
 		return (EINVAL);
 
-
-	return bus_dma_bounce_impl.tag_create(parent, alignment,
-	    boundary, lowaddr, highaddr, maxsize, nsegments,
-	    maxsegsz, flags, lockfunc, lockfuncarg, dmat);
+	if (parent == NULL) {
+		error = bus_dma_bounce_impl.tag_create(parent, alignment,
+		    boundary, lowaddr, highaddr, maxsize, nsegments, maxsegsz,
+		    flags, lockfunc, lockfuncarg, dmat);
+	} else {
+		tc = (struct bus_dma_tag_common *)parent;
+		error = tc->impl->tag_create(parent, alignment,
+		    boundary, lowaddr, highaddr, maxsize, nsegments, maxsegsz,
+		    flags, lockfunc, lockfuncarg, dmat);
+	}
+	return (error);
 }