lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  PHC 
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:   Mon, 1 Jun 2020 11:08:37 -0600
From:   Rob Herring <>
To:     Wolfram Sang <>
Cc:     Serge Semin <>,
        Devicetree Compiler <>,
        Serge Semin <>,
        Alexey Malahov <>,
        Thomas Bogendoerfer <>,
        Jarkko Nikula <>,
        Andy Shevchenko <>,
        Frank Rowand <>,, Linux I2C <>,
        "" <>
Subject: Re: [PATCH v2] check: Add 10bit/slave i2c reg flags support

On Sat, May 30, 2020 at 3:32 AM Wolfram Sang <> wrote:
> > +     addr = reg & 0x3FFFFFFFU;
> > +     snprintf(unit_addr, sizeof(unit_addr), "%x", addr);
> Hmm, this hardcoded value will not work if we ever need to add another
> bit. I hope this will never happen, though.

I had this concern and requested the first time this was submitted
(and abandoned) to just mask out the top byte. However, Joel's version
of this fix[1] does some actual checks on 10-bit addressing, so I've
dropped that request.

> > +             if ((reg & (1U << 31)) && addr > 0x3ff)
> Same here with bit 31. I haven't checked DTC but can't we import the
> header with the defines into the project? Or is this then a circular
> dependency?

Easier to just duplicate the define here which Joel's patches do.



Powered by blists - more mailing lists