From mboxrd@z Thu Jan  1 00:00:00 1970
From: matlackdavid@gmail.com (David Matlack)
Date: Mon, 21 Apr 2014 22:01:26 -0700
Subject: slicoss: a hardware debugging question
In-Reply-To: <CANoiuGJYnK9RKQDt1jP00Bn3D2OKGn-iB-T7FtH3oZg+QPmicQ@mail.gmail.com>
References: <CANoiuGJYnK9RKQDt1jP00Bn3D2OKGn-iB-T7FtH3oZg+QPmicQ@mail.gmail.com>
Message-ID: <20140422050126.GA8834@gmail.com>
To: kernelnewbies@lists.kernelnewbies.org
List-Id: kernelnewbies.lists.kernelnewbies.org

On 04/21, David Matlack wrote:
> The only problem is, this times out more than half the time. And when it
> succeeds, it [seemingly] always takes 22 cycles.

Figured it out :). The driver was only telling the device about the
lower 32-bits of the address of the ISR. That doesn't quite work on
64-bit machines!

--David