diff options
| author | jhb <jhb@FreeBSD.org> | 2013-01-28 19:38:13 +0000 |
|---|---|---|
| committer | jhb <jhb@FreeBSD.org> | 2013-01-28 19:38:13 +0000 |
| commit | 5df972afb615beef2123a19aeca58e473e3d4e95 (patch) | |
| tree | 380f661c837f03bdedc0e10252427ed4cde7ed7d /sys/dev/usb/net/if_cdce.c | |
| parent | 7756bef786978bd5d07c05b55bc8428454d6837d (diff) | |
| download | FreeBSD-src-5df972afb615beef2123a19aeca58e473e3d4e95.zip FreeBSD-src-5df972afb615beef2123a19aeca58e473e3d4e95.tar.gz | |
Mark 'ticks', 'time_second', and 'time_uptime' as volatile to prevent the
compiler from caching their values in tight loops.
Reviewed by: bde
MFC after: 1 week
Diffstat (limited to 'sys/dev/usb/net/if_cdce.c')
| -rw-r--r-- | sys/dev/usb/net/if_cdce.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/sys/dev/usb/net/if_cdce.c b/sys/dev/usb/net/if_cdce.c index 6e0ce97..e214fe2 100644 --- a/sys/dev/usb/net/if_cdce.c +++ b/sys/dev/usb/net/if_cdce.c @@ -500,6 +500,7 @@ cdce_attach(device_t dev) const struct usb_interface_descriptor *id; const struct usb_cdc_ethernet_descriptor *ued; const struct usb_config *pcfg; + uint32_t seed; int error; uint8_t i; uint8_t data_iface_no; @@ -612,8 +613,9 @@ alloc_transfers: /* fake MAC address */ device_printf(dev, "faking MAC address\n"); + seed = ticks; sc->sc_ue.ue_eaddr[0] = 0x2a; - memcpy(&sc->sc_ue.ue_eaddr[1], &ticks, sizeof(uint32_t)); + memcpy(&sc->sc_ue.ue_eaddr[1], &seed, sizeof(uint32_t)); sc->sc_ue.ue_eaddr[5] = device_get_unit(dev); } else { |
