Author: bschmidt
Date: Sat Dec 18 15:45:10 2010
New Revision: 216523
URL: http://svn.freebsd.org/changeset/base/216523
Log:
Add 2 missing bus_dmamap_sync() calls. Those fix random 'scan timeout',
'could not set power mode', 'device config failed' and other errors due
reading invalid memory.
Obtained from: OpenBSD
MFC after: 3 days
Modified:
head/sys/dev/wpi/if_wpi.c
Modified: head/sys/dev/wpi/if_wpi.c
==============================================================================
--- head/sys/dev/wpi/if_wpi.c Sat Dec 18 15:35:10 2010 (r216522)
+++ head/sys/dev/wpi/if_wpi.c Sat Dec 18 15:45:10 2010 (r216523)
@@ -1645,9 +1645,15 @@ wpi_notif_intr(struct wpi_softc *sc)
struct wpi_rx_data *data;
uint32_t hw;
+ bus_dmamap_sync(sc->shared_dma.tag, sc->shared_dma.map,
+ BUS_DMASYNC_POSTREAD);
+
hw = le32toh(sc->shared->next);
while (sc->rxq.cur != hw) {
data = &sc->rxq.data[sc->rxq.cur];
+
+ bus_dmamap_sync(sc->rxq.data_dmat, data->map,
+ BUS_DMASYNC_POSTREAD);
desc = (void *)data->m->m_ext.ext_buf;
DPRINTFN(WPI_DEBUG_NOTIFY,
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