USB: ehci: fix audio record functionality for some Full speed sound blaster devices
authorDmitri Epshtein <dima@marvell.com>
Mon, 14 Dec 2009 15:17:34 +0000 (17:17 +0200)
committerGreg Kroah-Hartman <gregkh@suse.de>
Tue, 2 Mar 2010 22:53:13 +0000 (14:53 -0800)
This patch fix audio record functionality for some Full speed sound blaster devices.
Issue: Sometimes transaction complete indication is coming from HW one frame later.
Solution: If scan_periodic process now frame or previous frame now-1 and sitd transaction
is not finished yet, exit scan_periodic function and check the same transaction in the next frame.

Signed-off-by: Dimitry Epshtein <dima@marvell.com>
Signed-off-by: Saeed Bishara <saeed@marvell.com>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Cc: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

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