Author: loos
Date: Sun Jan 22 17:24:00 2017
New Revision: 312637
URL: https://svnweb.freebsd.org/changeset/base/312637
Log:
Be a little more pedantic here, the TRM says the hardware is supposed to
only clean the OWNER bit on SOP descriptors.
MFC after: 3 days
Sponsored by: Rubicon Communications, LLC (Netgate)
Modified:
head/sys/arm/ti/cpsw/if_cpsw.c
Modified: head/sys/arm/ti/cpsw/if_cpsw.c
==============================================================================
--- head/sys/arm/ti/cpsw/if_cpsw.c Sun Jan 22 17:07:37 2017
(r312636)
+++ head/sys/arm/ti/cpsw/if_cpsw.c Sun Jan 22 17:24:00 2017
(r312637)
@@ -1981,7 +1981,8 @@ cpsw_tx_dequeue(struct cpsw_softc *sc)
sc->tx.teardown = 1;
}
- if ((flags & CPDMA_BD_OWNER) != 0 && sc->tx.teardown == 0)
+ if ((flags & (CPDMA_BD_SOP | CPDMA_BD_OWNER)) ==
+ (CPDMA_BD_SOP | CPDMA_BD_OWNER) && sc->tx.teardown == 0)
break; /* Hardware is still using this packet. */
bus_dmamap_sync(sc->mbuf_dtag, slot->dmamap,
BUS_DMASYNC_POSTWRITE);
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