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am7xxx: detect unexpected responses to AM7XXX_PACKET_TYPE_DEVINFO requests
author
Antonio Ospite <ospite@studenti.unina.it>
Fri, 7 Dec 2012 11:22:45 +0000
(12:22 +0100)
committer
Antonio Ospite <ospite@studenti.unina.it>
Fri, 7 Dec 2012 11:47:39 +0000
(12:47 +0100)
Under some conditions, some devices like Philips/Sagemcom PPX projectors
return a strangely small packet (e.g. an AM7XXX_PACKET_TYPE_POWER with
header_data_len == 2) in reply to an AM7XXX_PACKET_TYPE_DEVINFO, hence
NOT providing useful device info.
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