Hello Oleksij, On Fri, Aug 11, 2023 at 10:40:24AM +0200, Oleksij Rempel wrote: > Make sure we use predictable DMA Channel Select configuration. Otherwise > bad thins may happen. > So fart this fix is not related to any know issue and was noticed by > investigating other bugs.
Typos in commit message: s/thins/things/ s/fart/far/ s/know/known/ > > Signed-off-by: Oleksij Rempel <[email protected]> > --- > drivers/net/designware_eqos.c | 5 +++++ > 1 file changed, 5 insertions(+) > > diff --git a/drivers/net/designware_eqos.c b/drivers/net/designware_eqos.c > index 5e5c9ebe68..845f9f51ef 100644 > --- a/drivers/net/designware_eqos.c > +++ b/drivers/net/designware_eqos.c > @@ -351,6 +351,11 @@ int eqos_set_ethaddr(struct eth_device *edev, const > unsigned char *mac) > > memcpy(eqos->macaddr, mac, ETH_ALEN); > > + /* mac_hi is only partially overwritten by the following code. Part of > + * this variable is DCS (DMA Channel Select). If this variable is not > + * zeroed, we may get some random DMA RX channel. > + */ > + mac_hi = 0; > /* Update the MAC address */ > memcpy(&mac_hi, &mac[4], 2); > memcpy(&mac_lo, &mac[0], 4); > -- > 2.39.2 > > Kind regards Thorsten -- Thorsten Scherer | Eckelmann AG | www.eckelmann.de |
