git: 9465af5ee2de - stable/13 - if_dwc: fix reinitialization with changed MAC

The branch stable/13 has been updated by mhorne:

URL: https://cgit.FreeBSD.org/src/commit/?id=9465af5ee2de0374b143802ea32823c45f3d73be

commit 9465af5ee2de0374b143802ea32823c45f3d73be
Author:     Jiahao LI <jiahali@blackberry.com>
AuthorDate: 2022-09-08 15:50:37 +0000
Commit:     Mitchell Horne <mhorne@FreeBSD.org>
CommitDate: 2022-09-16 17:34:48 +0000

    if_dwc: fix reinitialization with changed MAC
    
    It was observed that on RockPro64 hardware, the dwc interface is unable
    to receive packets after being assigned a new MAC address. The fix is
    simply to call mii_mediachg() before touching any device registers in
    dwc_init_locked(). This is consistent with what the OpenBSD driver does.
    
    PR:             263820
    MFC after:      1 week
    
    (cherry picked from commit 6501fcdc0a97faa3c59f6ece314bf7754303db6f)
---
 sys/dev/dwc/if_dwc.c | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/sys/dev/dwc/if_dwc.c b/sys/dev/dwc/if_dwc.c
index 761f4a33ab43..8865c79ccc0c 100644
--- a/sys/dev/dwc/if_dwc.c
+++ b/sys/dev/dwc/if_dwc.c
@@ -1166,6 +1166,12 @@ dwc_init_locked(struct dwc_softc *sc)
 	if (if_getdrvflags(ifp) & IFF_DRV_RUNNING)
 		return;
 
+	/*
+	 * Call mii_mediachg() which will call back into dwc_miibus_statchg()
+	 * to set up the remaining config registers based on current media.
+	 */
+	mii_mediachg(sc->mii_softc);
+
 	dwc_setup_rxfilter(sc);
 	dwc_setup_core(sc);
 	dwc_enable_mac(sc, true);
@@ -1174,11 +1180,6 @@ dwc_init_locked(struct dwc_softc *sc)
 
 	if_setdrvflagbits(ifp, IFF_DRV_RUNNING, IFF_DRV_OACTIVE);
 
-	/*
-	 * Call mii_mediachg() which will call back into dwc_miibus_statchg()
-	 * to set up the remaining config registers based on current media.
-	 */
-	mii_mediachg(sc->mii_softc);
 	callout_reset(&sc->dwc_callout, hz, dwc_tick, sc);
 }