netdev - Re: [RFC PATCH net-next v4 01/28] net: mdio: ipq8064: clean whitespaces in define

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Date:   Sun, 16 May 2021 11:12:58 +0100
From:   Jonathan McDowell <noodles@...th.li>
To:     Ansuel Smith <ansuelsmth@...il.com>
Cc:     Andrew Lunn <andrew@...n.ch>,
        Florian Fainelli <f.fainelli@...il.com>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Russell King <linux@...linux.org.uk>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH net-next v4 01/28] net: mdio: ipq8064: clean
 whitespaces in define

On Sun, May 16, 2021 at 10:49:59AM +0100, Jonathan McDowell wrote:
> On Sat, May 15, 2021 at 07:30:26PM +0200, Ansuel Smith wrote:
> > On Sat, May 15, 2021 at 06:00:46PM +0100, Jonathan McDowell wrote:
> > > On Sat, May 08, 2021 at 08:05:58PM +0200, Ansuel Smith wrote:
> > > > On Sat, May 08, 2021 at 08:02:33PM +0200, Andrew Lunn wrote:
> > > > > On Sat, May 08, 2021 at 02:28:51AM +0200, Ansuel Smith wrote:
> > > > > > Fix mixed whitespace and tab for define spacing.
> > > > > 
> > > > > Please add a patch [0/28] which describes the big picture of what
> > > > > these changes are doing.
> > > > > 
> > > > > Also, this series is getting big. You might want to split it into two,
> > > > > One containing the cleanup, and the second adding support for the new
> > > > > switch.
> > > > > 
> > > > > 	Andrew
> > > > 
> > > > There is a 0/28. With all the changes. Could be that I messed the cc?
> > > > I agree think it's better to split this for the mdio part, the cleanup
> > > > and the changes needed for the internal phy.
> > > 
> > > FWIW I didn't see the 0/28 mail either. I tried these out on my RB3011
> > > today. I currently use the GPIO MDIO driver because I saw issues with
> > > the IPQ8064 driver in the past, and sticking with the GPIO driver I see
> > > both QCA8337 devices and traffic flows as expected, so no obvious
> > > regressions from your changes.
> > > 
> > > I also tried switching to the IPQ8064 MDIO driver for my first device
> > > (which is on the MDIO0 bus), but it's still not happy:
> > > 
> > > qca8k 37000000.mdio-mii:10: Switch id detected 0 but expected 13
> > > 
> > Can you try the v6 version of this series?
> 
> FWIW I tried v6 without altering my DT at all (so still using the GPIO
> MDIO driver, and not switching to use the alternate PHY support) and got
> an oops due to a NULL pointer dereference, apparently in the mdio_bus
> locking code. I'm back porting to 5.10.37 (because I track LTS on the
> device) so I might be missing something, but the v4 version I tried
> previously worked ok.

I dropped patches 20-25 of the series (i.e. the piece that adds the
internal phy/mdio support) and tried again and that works fine, so it
does look like I either managed to mismerge them somehow (and those
pieces weren't the ones with conflicts) or there's a problem (possibly
only when the DT hasn't been updated to use the internal bus?).

J.

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