git: bdedfb3a0068 - stable/13 - if_ffec: free the dmamem allocation in detach

The branch stable/13 has been updated by mhorne:

URL: https://cgit.FreeBSD.org/src/commit/?id=bdedfb3a0068f08867f47b4ffad98297e5345c94

commit bdedfb3a0068f08867f47b4ffad98297e5345c94
Author:     Mitchell Horne <mhorne@FreeBSD.org>
AuthorDate: 2022-06-15 15:53:25 +0000
Commit:     Mitchell Horne <mhorne@FreeBSD.org>
CommitDate: 2022-07-04 16:34:57 +0000

    if_ffec: free the dmamem allocation in detach
    
    Calling bus_dmamap_destroy() for a mapping which was allocated with
    bus_dmamem_alloc() will result in a panic. This change is not run-time
    tested, but I identified the issue while implementing the analogous
    method in if_dwc(4), using this implementation as the template.
    
    MFC after:      1 week
    Sponsored by:   The FreeBSD Foundation
    
    (cherry picked from commit 8757d0fca9e6a9e174bc87728e296e5338d30eb7)
---
 sys/dev/ffec/if_ffec.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/sys/dev/ffec/if_ffec.c b/sys/dev/ffec/if_ffec.c
index 66e053fcdf67..090869abeba1 100644
--- a/sys/dev/ffec/if_ffec.c
+++ b/sys/dev/ffec/if_ffec.c
@@ -1425,7 +1425,8 @@ ffec_detach(device_t dev)
 		bus_dma_tag_destroy(sc->rxbuf_tag);
 	if (sc->rxdesc_map != NULL) {
 		bus_dmamap_unload(sc->rxdesc_tag, sc->rxdesc_map);
-		bus_dmamap_destroy(sc->rxdesc_tag, sc->rxdesc_map);
+		bus_dmamem_free(sc->rxdesc_tag, sc->rxdesc_ring,
+		    sc->rxdesc_map);
 	}
 	if (sc->rxdesc_tag != NULL)
 		bus_dma_tag_destroy(sc->rxdesc_tag);
@@ -1441,7 +1442,8 @@ ffec_detach(device_t dev)
 		bus_dma_tag_destroy(sc->txbuf_tag);
 	if (sc->txdesc_map != NULL) {
 		bus_dmamap_unload(sc->txdesc_tag, sc->txdesc_map);
-		bus_dmamap_destroy(sc->txdesc_tag, sc->txdesc_map);
+		bus_dmamem_free(sc->txdesc_tag, sc->txdesc_ring,
+		    sc->txdesc_map);
 	}
 	if (sc->txdesc_tag != NULL)
 		bus_dma_tag_destroy(sc->txdesc_tag);