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Date: Tue, 03 Apr 2012 23:54:18 +0100 From: Chris Wilson <chris@...is-wilson.co.uk> To: Daniel Kurtz <djkurtz@...omium.org>, Keith Packard <keithp@...thp.com>, David Airlie <airlied@...ux.ie>, dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org, Daniel Vetter <daniel@...ll.ch> Cc: Benson Leung <bleung@...omium.org>, Yufeng Shen <miletus@...omium.org>, Daniel Kurtz <djkurtz@...omium.org> Subject: Re: [PATCH 1/8 v7] drm/i915/intel_i2c: handle zero-length writes On Fri, 30 Mar 2012 19:46:36 +0800, Daniel Kurtz <djkurtz@...omium.org> wrote: > A common method of probing an i2c bus is trying to do a zero-length write. > Handle this case by checking the length first before decrementing it. > > This is actually important, since attempting a zero-length write is one > of the ways that i2cdetect and i2c_new_probed_device detect whether > there is device present on the bus with a given address. > > Signed-off-by: Daniel Kurtz <djkurtz@...omium.org> Having done a good job with handling zero length writes, can I tempt to submit a similar fix for zero length reads? ;) -Chris -- Chris Wilson, Intel Open Source Technology Centre -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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