aboutsummaryrefslogtreecommitdiff
path: root/drivers/usb/host/ehci-sched.c
diff options
context:
space:
mode:
authorDmitri Epshtein <dima@marvell.com>2009-12-14 17:17:34 +0200
committerGreg Kroah-Hartman <gregkh@suse.de>2010-03-02 14:53:13 -0800
commit22e186948a262c9cd377fb43aa50bb3c3f01c468 (patch)
treeaf089f6c1eeac5d5d50783f08b6a4deb262259c8 /drivers/usb/host/ehci-sched.c
parentd63c66d2d08f52487f3ef32f1c9b1231d848966b (diff)
downloadlinux-stericsson-22e186948a262c9cd377fb43aa50bb3c3f01c468.tar.gz
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.c10
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;