From: Daniel Glöckner <dg@emlix.com>
Date: Thu, 28 May 2009 10:53:24 +0000 (+0200)
Subject: USB: gadget: g_serial: append zlp when tx buffer becomes empty
X-Git-Tag: v2.6.31-rc1~304^2~56
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2e25134122c25ebb0679b4bbd536fb46c669f9d7;p=pandora-kernel.git

USB: gadget: g_serial: append zlp when tx buffer becomes empty

Some usb serial host drivers expect a short packet before they forward
the data to the application. This is caused by them trying to read more
than one packet at a time. So when the gadget sends an exact multiple
of the maximum packet size, it should append a zero-length packet.

Signed-off-by: Daniel Glöckner <dg@emlix.com>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

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