From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1gqzDL-0007iA-ID for barebox@lists.infradead.org; Tue, 05 Feb 2019 11:48:33 +0000 Date: Tue, 5 Feb 2019 12:48:29 +0100 From: Sascha Hauer Message-ID: <20190205114829.wffdhincplpsn6rs@pengutronix.de> References: <20190201130241.26620-1-l.stach@pengutronix.de> <20190201133108.GA14385@ravnborg.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20190201133108.GA14385@ravnborg.org> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "barebox" Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: Re: [PATCH] net: fec_imx: skip fec_halt if the FEC wasn't started To: Sam Ravnborg Cc: barebox@lists.infradead.org On Fri, Feb 01, 2019 at 02:31:08PM +0100, Sam Ravnborg wrote: > Hi Lucas. > > On Fri, Feb 01, 2019 at 02:02:41PM +0100, Lucas Stach wrote: > > If the FEC driver is enabled, but the ethernet device was never > > opened due to booting from another source the wait for graceful > > transmit stop will always fail. This introduces an unnecessary > > boot delay and prints a distracting warning. > > > > As there is no point in trying to shut down the FEC if it was > > never started, just skip all of fec_halt in that case. > > > > Signed-off-by: Lucas Stach > > --- > > drivers/net/fec_imx.c | 3 +++ > > 1 file changed, 3 insertions(+) > > > > diff --git a/drivers/net/fec_imx.c b/drivers/net/fec_imx.c > > index 4823b08340c6..36505c529c84 100644 > > --- a/drivers/net/fec_imx.c > > +++ b/drivers/net/fec_imx.c > > @@ -395,6 +395,9 @@ static void fec_halt(struct eth_device *dev) > > struct fec_priv *fec = (struct fec_priv *)dev->priv; > > uint32_t reg; > > > > + if (!(readl(fec->regs + FEC_ECNTRL) & FEC_ECNTRL_ETHER_EN)) > > + return; > > + > It would be nice with a small comment in the code that explain why > it is OK to return here, so one does not have to go digging in git > to find out why. Added such a comment and applied. Sascha -- Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox