diff options
| author | David Gwynne <dlg@cvs.openbsd.org> | 2016-01-09 11:54:20 +0000 |
|---|---|---|
| committer | David Gwynne <dlg@cvs.openbsd.org> | 2016-01-09 11:54:20 +0000 |
| commit | f6040eb590859efad1582aea9dbb4bcdb835528d (patch) | |
| tree | 17828c5bc8ac778be73f8dd47591a7108dfdfee8 /sys/dev/pci/if_em.c | |
| parent | 8c7d088a2fedd10d0d46533f85cfcb6e9b3955c2 (diff) | |
consistently use the desc ring pointers as guards for their dmamem.
Diffstat (limited to 'sys/dev/pci/if_em.c')
| -rw-r--r-- | sys/dev/pci/if_em.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/sys/dev/pci/if_em.c b/sys/dev/pci/if_em.c index 8f1e6771390..b6ca581ec5a 100644 --- a/sys/dev/pci/if_em.c +++ b/sys/dev/pci/if_em.c @@ -31,7 +31,7 @@ POSSIBILITY OF SUCH DAMAGE. ***************************************************************************/ -/* $OpenBSD: if_em.c,v 1.326 2016/01/07 12:18:38 dlg Exp $ */ +/* $OpenBSD: if_em.c,v 1.327 2016/01/09 11:54:19 dlg Exp $ */ /* $FreeBSD: if_em.c,v 1.46 2004/09/29 18:28:28 mlaier Exp $ */ #include <dev/pci/if_em.h> @@ -308,7 +308,10 @@ em_defer_attach(struct device *self) em_stop(sc, 1); em_free_pci_resources(sc); + + sc->sc_rx_desc_ring = NULL; em_dma_free(sc, &sc->sc_rx_dma); + sc->sc_tx_desc_ring = NULL; em_dma_free(sc, &sc->sc_tx_dma); return; @@ -551,8 +554,10 @@ em_attach(struct device *parent, struct device *self, void *aux) err_mac_addr: err_hw_init: + sc->sc_rx_desc_ring = NULL; em_dma_free(sc, &sc->sc_rx_dma); err_rx_desc: + sc->sc_tx_desc_ring = NULL; em_dma_free(sc, &sc->sc_tx_dma); err_tx_desc: err_pci: @@ -1900,12 +1905,12 @@ em_detach(struct device *self, int flags) em_free_pci_resources(sc); if (sc->sc_rx_desc_ring != NULL) { - em_dma_free(sc, &sc->sc_rx_dma); sc->sc_rx_desc_ring = NULL; + em_dma_free(sc, &sc->sc_rx_dma); } if (sc->sc_tx_desc_ring != NULL) { - em_dma_free(sc, &sc->sc_tx_dma); sc->sc_tx_desc_ring = NULL; + em_dma_free(sc, &sc->sc_tx_dma); } ether_ifdetach(ifp); |