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Date:      Tue, 05 Apr 2016 23:21:32 +0000
From:      bugzilla-noreply@freebsd.org
To:        freebsd-bugs@FreeBSD.org
Subject:   [Bug 207786] gpioiic_callback() dereferences IIC "how" argument incorrectly
Message-ID:  <bug-207786-8-TyXCDUl3I4@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-207786-8@https.bugs.freebsd.org/bugzilla/>
References:  <bug-207786-8@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D207786

--- Comment #2 from chadf@triularity.org ---
When will anyone ever pass an address that isn't memory aligned _and_ using=
 the
interface correctly? Any code calling that which doesn't pass the address o=
f an
int (which should be aligned automatically) should be fixed instead of tryi=
ng
to work around it here.

The only place in the sys code that seems to initiate such a callback (for
IIC_REQUEST_BUS) is iicbus_request_bus() [sys/dev/iicbus/iiconf.c], which
passes the address of an int parameter that is expected to already be align=
ed.

The function lpbb_callback() [sys/dev/ppbus/lpbb.c] already handles this
properly, presumable without any alignment problems.

--=20
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