On Tuesday 29 August 2017 01:42:08 David Miller wrote:

From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: Sun, 27 Aug 2017 17:03:30 +0200

quoted

The IRDA code has long been obsolete and broken.  So, to keep people
from trying to use it, and to prevent people from having to maintain it,
let's move it to drivers/staging/ so that we can delete it entirely from
the kernel in a few releases.

No objection, I'll apply this to net-next, thanks Greg.

IRDA works fine in Debian 9 (kernel 4.9) and I use it for simple file 
transfer. Hope I'm not the only one...

# irattach /dev/ttyS0 -d tekram -s
# irdadump
21:28:52.830350 xid:cmd aed8eb79 > ffffffff S=6 s=0 (14)
21:28:52.922368 xid:cmd aed8eb79 > ffffffff S=6 s=1 (14)
21:28:53.014350 xid:cmd aed8eb79 > ffffffff S=6 s=2 (14)
21:28:53.106338 xid:cmd aed8eb79 > ffffffff S=6 s=3 (14)
21:28:53.190276 xid:rsp aed8eb79 < 000035d1 S=6 s=3 Nokia 6230i hint=b125 [ 
PnP Modem Fax Telephony IrCOMM IrOBEX ] (28)
21:28:53.198384 xid:cmd aed8eb79 > ffffffff S=6 s=4 (14)
21:28:53.290382 xid:cmd aed8eb79 > ffffffff S=6 s=5 (14)
21:28:53.382341 xid:cmd aed8eb79 > ffffffff S=6 s=* pentium hint=0400 [ 
Computer ] (23)
^C
8 packets received by filter

$ obexftp -i -l MMC
Connecting..\done
Receiving "MMC".../<?xml version="1.0"?>
<!DOCTYPE folder-listing SYSTEM "obex-folder-listing.dtd"
 [ <!ATTLIST folder mem-type CDATA #IMPLIED> ]>
<folder-listing version="1.0">
    <parent-folder />
    <file name="Image000.jpg" size="304300" modified="20160219T135924" 
user-perm="RWD"/>
    <file name="Image001.jpg" size="270037" modified="20170811T233122" 
user-perm="RWD"/>
    <file name="Image004.jpg" size="53519" modified="20170814T074550" 
user-perm="RWD"/>
....
$ obexftp -i -c MMC -g Image004.jpg
Connecting..\done
Sending "MMC"...|done
Receiving "Image004.jpg"...-done
Disconnecting..\done


-- 
Ondrej Zary