diff options
| author | Dmitri Epshtein <dima@marvell.com> | 2009-12-14 18:17:34 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-03-03 01:53:13 +0300 |
| commit | 22e186948a262c9cd377fb43aa50bb3c3f01c468 (patch) | |
| tree | af089f6c1eeac5d5d50783f08b6a4deb262259c8 /drivers/usb/host/ehci-sched.c | |
| parent | d63c66d2d08f52487f3ef32f1c9b1231d848966b (diff) | |
| download | linux-22e186948a262c9cd377fb43aa50bb3c3f01c468.tar.xz | |
USB: ehci: fix audio record functionality for some Full speed sound blaster devices
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>
Diffstat (limited to 'drivers/usb/host/ehci-sched.c')
| -rw-r--r-- | drivers/usb/host/ehci-sched.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/drivers/usb/host/ehci-sched.c b/drivers/usb/host/ehci-sched.c index e7a3b087083f..39340ae00ac4 100644 --- a/drivers/usb/host/ehci-sched.c +++ b/drivers/usb/host/ehci-sched.c @@ -2324,9 +2324,13 @@ restart: * No need to check for activity unless the * frame is current. */ - if (frame == clock_frame && live && - (q.sitd->hw_results & - SITD_ACTIVE(ehci))) { + if (((frame == clock_frame) || + (((frame + 1) % ehci->periodic_size) + == clock_frame)) + && live + && (q.sitd->hw_results & + SITD_ACTIVE(ehci))) { + incomplete = true; q_p = &q.sitd->sitd_next; hw_p = &q.sitd->hw_next; |