diff options
| author | msaitoh <msaitoh@NetBSD.org> | 2022-10-26 06:36:39 +0000 |
|---|---|---|
| committer | msaitoh <msaitoh@NetBSD.org> | 2022-10-26 06:36:39 +0000 |
| commit | 9ae57b30bbab5cf380ce16ac9bc4827409911ced (patch) | |
| tree | 5e602937e5cd6aab46145ef130d8a6b09f687b58 /sys/dev | |
| parent | 8b21705f98f02f3dc9ae733d221082fbe408c385 (diff) | |
Add comment to ICH/PCH's lock stuff in wm_reset().
Diffstat (limited to 'sys/dev')
| -rw-r--r-- | sys/dev/pci/if_wm.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/sys/dev/pci/if_wm.c b/sys/dev/pci/if_wm.c index 1928a9f437d..12244ae53c2 100644 --- a/sys/dev/pci/if_wm.c +++ b/sys/dev/pci/if_wm.c @@ -1,4 +1,4 @@ -/* $NetBSD: if_wm.c,v 1.765 2022/10/19 06:37:25 msaitoh Exp $ */ +/* $NetBSD: if_wm.c,v 1.766 2022/10/26 06:36:39 msaitoh Exp $ */ /* * Copyright (c) 2001, 2002, 2003, 2004 Wasabi Systems, Inc. @@ -82,7 +82,7 @@ */ #include <sys/cdefs.h> -__KERNEL_RCSID(0, "$NetBSD: if_wm.c,v 1.765 2022/10/19 06:37:25 msaitoh Exp $"); +__KERNEL_RCSID(0, "$NetBSD: if_wm.c,v 1.766 2022/10/26 06:36:39 msaitoh Exp $"); #ifdef _KERNEL_OPT #include "opt_if_wm.h" @@ -5579,6 +5579,11 @@ wm_reset(struct wm_softc *sc) CSR_WRITE(sc, WMREG_CTRL, reg); /* Don't insert a completion barrier when reset */ delay(20*1000); + /* + * The EXTCNFCTR_MDIO_SW_OWNERSHIP bit is cleared by the reset, + * so don't use sc->phy.release(sc). Release sc_ich_phymtx + * only. See also wm_get_swflag_ich8lan(). + */ mutex_exit(sc->sc_ich_phymtx); break; case WM_T_82580: |
