From: Olivier Sobrie <olivier@sobrie.be>
Date: Mon, 14 Jul 2014 10:08:50 +0000 (+0200)
Subject: hso: fix deadlock when receiving bursts of data
X-Git-Tag: omap-for-v3.17/fixes-against-rc2~289^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8f9818af4eaef1150282e18355aaea425474a411;p=pandora-kernel.git

hso: fix deadlock when receiving bursts of data

When the module sends bursts of data, sometimes a deadlock happens in
the hso driver when the tty buffer doesn't get the chance to be flushed
quickly enough.

Remove the endless while loop in function put_rxbuf_data() which is
called by the urb completion handler.
If there isn't enough room in the tty buffer, discards all the data
received in the URB.

Cc: David Miller <davem@davemloft.net>
Cc: David Laight <David.Laight@ACULAB.COM>
Cc: One Thousand Gnomes <gnomes@lxorguk.ukuu.org.uk>
Cc: Dan Williams <dcbw@redhat.com>
Cc: Jan Dumon <j.dumon@option.com>
Signed-off-by: Olivier Sobrie <olivier@sobrie.be>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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