Date: Thu, 01 May 2014 17:40:01 -0600 From: Ian Lepore <ian@FreeBSD.org> To: Winston Smith <smith.winston.101@gmail.com> Cc: FreeBSD ARM <freebsd-arm@FreeBSD.org> Subject: Re: BBB/I2C: Using ioctl(I2CRDWR) warns: interrupt storm detected on "intr70:" Message-ID: <1398987601.22079.140.camel@revolution.hippie.lan> In-Reply-To: <CADH-AwGbnqzGqbzpV9YMgdOciLpoy3fqxF1RtCmMPZtgc%2BAcXg@mail.gmail.com> References: <CADH-AwGbnqzGqbzpV9YMgdOciLpoy3fqxF1RtCmMPZtgc%2BAcXg@mail.gmail.com>
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On Thu, 2014-05-01 at 13:12 -0400, Winston Smith wrote: > Continuing on with working with the I2C interface on the BBB I wrote a > utility to read the BBB's 28 byte system EEPROM on iic0, address 0x50 > which contains the model and serial numbers. See pastebin here: > > http://pastebin.com/p7XwKUGZ > > However, when I run the utility: > > root@beaglebone:~ # ./bbb_eeprom > Read from slave 50 on /dev/iic0, signature=AA:55:33:EE > Model: A335BNLT0A6A > Serial: 0214BBBK4321 > > > I see the following warning on the console: > > interrupt storm detected on "intr70:"; throttling interrupt source > > > Does this mean anything, or is it just a spurious warning. > Nope, that's not spurious, that's a real problem, usually it's a driver bug. -- Ian
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