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authorAlan Stern <stern@rowland.harvard.edu>2013-05-29 13:21:01 -0400
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-05-30 21:34:29 +0900
commit8a1ea51f87a6149c3263a63e9c60d852bedbecd7 (patch)
tree010bf48bb0172df256677885e4e3a9c35e9bb455 /drivers/usb/musb
parente6b0166f2106e087a197c528eb1e465071f5225b (diff)
downloadlinux-8a1ea51f87a6149c3263a63e9c60d852bedbecd7.tar.bz2
USB: MUSB: upgrade the isochronous API
This patch attempts to fix the isochonour API in the musb host driver. In particular, the urb->start_frame field should always be set by the driver; it isn't an input parameter. The simplest way to accomplish this is to treat all URBs as though the URB_ISO_ASAP flag was set. This won't give the right behavior when an underrun occurs, but I don't know enough about the musb driver to handle that case. Unfortunately, I have no way to test this change. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/musb')
-rw-r--r--drivers/usb/musb/musb_host.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c
index 8914dec49f01..85ed11e04f35 100644
--- a/drivers/usb/musb/musb_host.c
+++ b/drivers/usb/musb/musb_host.c
@@ -269,8 +269,7 @@ musb_start_urb(struct musb *musb, int is_in, struct musb_qh *qh)
/* FIXME this doesn't implement that scheduling policy ...
* or handle framecounter wrapping
*/
- if ((urb->transfer_flags & URB_ISO_ASAP)
- || (frame >= urb->start_frame)) {
+ if (1) { /* Always assume URB_ISO_ASAP */
/* REVISIT the SOF irq handler shouldn't duplicate
* this code; and we don't init urb->start_frame...
*/