rtems/rtems-libbsd
1
0
Fork 0
mirror of https://git.rtems.org/rtems-libbsd/ synced 2025-10-14 07:15:58 +08:00
Code Issues Packages Projects Releases Wiki Activity

ffec: Add wmb() to descriptor updates

Browse Source
This commit is contained in:
Sebastian Huber
2017-09-27 09:37:38 +02:00
parent 7f7a3397fc
commit a70edfc49a
1 changed files with 2 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
freebsd/sys/dev/ffec/if_ffec.c
View File

@@ -593,6 +593,7 @@ ffec_setup_txdesc(struct ffec_softc *sc, int idx, bus_addr_t paddr,
* significant bits.
*/
sc->txdesc_ring[idx].buf_paddr = (uint32_t)paddr;
wmb();
sc->txdesc_ring[idx].flags_len = flags | len; /* Must be set last! */
return (nidx);
@@ -739,6 +740,7 @@ ffec_setup_rxdesc(struct ffec_softc *sc, int idx, bus_addr_t paddr)
*/
nidx = next_rxidx(sc, idx);
sc->rxdesc_ring[idx].buf_paddr = (uint32_t)paddr;
wmb();
sc->rxdesc_ring[idx].flags_len = FEC_RXDESC_EMPTY |
((nidx == 0) ? FEC_RXDESC_WRAP : 0);