From: Chris Metcalf <cmetcalf@ezchip.com>
Date: Mon, 4 May 2015 21:25:12 +0000 (-0400)
Subject: drivers/tty/hvc/hvc_tile.c: properly return -EAGAIN
X-Git-Tag: omap-for-v4.3/legacy-v2-signed~94^2~7
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b4287df82991ca608f44d7ac12ad9b3bc39d5baa;p=pandora-kernel.git

drivers/tty/hvc/hvc_tile.c: properly return -EAGAIN

We were returning zero if no bytes could be written to the Tilera
hypervisor console device, but this causes the output to be truncated.
By returning -EAGAIN the tty hvc driver will come back and try again,
which gives the semantics we want, and avoids dropping console output.

Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Chris Metcalf <cmetcalf@ezchip.com>
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