> -----Original Message----- > From: Andy Shevchenko [mailto:andy.shevche...@gmail.com] > Sent: Friday, January 06, 2017 5:07 AM > To: Kweh, Hock Leong <hock.leong.k...@intel.com> > Cc: David S. Miller <da...@davemloft.net>; Joao Pinto > <joao.pi...@synopsys.com>; Giuseppe CAVALLARO <peppe.cavall...@st.com>; > seraphin.bonna...@st.com; Jarod Wilson <ja...@redhat.com>; Alexandre > TORGUE <alexandre.tor...@gmail.com>; Joachim Eastwood > <manab...@gmail.com>; Niklas Cassel <niklas.cas...@axis.com>; Johan Hovold > <jo...@kernel.org>; Pavel Machek <pa...@ucw.cz>; lars.pers...@axis.com; > netdev <net...@vger.kernel.org>; LKML <linux-kernel@vger.kernel.org> > Subject: Re: [PATCH] net: stmmac: fix maxmtu assignment to be within valid > range > > On Thu, Jan 5, 2017 at 12:47 PM, Kweh, Hock Leong > <hock.leong.k...@intel.com> wrote: > > From: "Kweh, Hock Leong" <hock.leong.k...@intel.com> > > > > There is no checking valid value of maxmtu when getting it from devicetree. > > 'Device Tree' or 'device tree' ?
Noted & Thanks. Submitting V2. > > > This resolution added the checking condition to ensure the assignment > > is made within a valid range. > > > diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c > > b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c > > index 39eb7a6..683d59f 100644 > > --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c > > +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c > > @@ -3319,7 +3319,8 @@ int stmmac_dvr_probe(struct device *device, > > ndev->max_mtu = JUMBO_LEN; > > else > > ndev->max_mtu = SKB_MAX_HEAD(NET_SKB_PAD + NET_IP_ALIGN); > > - if (priv->plat->maxmtu < ndev->max_mtu) > > + if ((priv->plat->maxmtu < ndev->max_mtu) && > > + (priv->plat->maxmtu >= ndev->min_mtu)) > > ndev->max_mtu = priv->plat->maxmtu; > > Perhaps add a warning message on else branch? Noted & Thanks. Submitting V2. > > -- > With Best Regards, > Andy Shevchenko
