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Date: Mon, 25 Aug 2008 17:13:41 +0800 From: Bryan Wu <cooloney@...nel.org> To: felipe.balbi@...ia.com, linux-usb@...r.kernel.org Cc: linux-kernel@...r.kernel.org, Bryan Wu <cooloney@...nel.org> Subject: [PATCH 2/2] usb: musb: fix bug - should call usb_hcd_unlink_urb_from_ep before usb_hcd_giveback_urb This bug was found on Blackfin BF54x and BF52x board since kernel 2.6.24 USB API change http://blackfin.uclinux.org/gf/project/uclinux-dist/tracker/?action=TrackerItemEdit&tracker_item_id=4265 __musb_giveback is called by not only musb_giveback but also musb_urb_dequeue. musb_urb_dequeue also need call usb_hcd_unlink_urb_from_ep before usb_hcd_giveback_urb. So move usb_hcd_unlink_urb_from_ep from musb_giveback to __musb_giveback to fix this bug. Signed-off-by: Bryan Wu <cooloney@...nel.org> --- drivers/usb/musb/musb_host.c | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c index 8b4be01..ba98ac5 100644 --- a/drivers/usb/musb/musb_host.c +++ b/drivers/usb/musb/musb_host.c @@ -291,6 +291,8 @@ __acquires(musb->lock) urb->actual_length, urb->transfer_buffer_length ); + usb_hcd_unlink_urb_from_ep(musb_to_hcd(musb), urb); + spin_unlock(&musb->lock); usb_hcd_giveback_urb(musb_to_hcd(musb), urb, status); spin_lock(&musb->lock); @@ -353,8 +355,6 @@ musb_giveback(struct musb_qh *qh, struct urb *urb, int status) break; } - usb_hcd_unlink_urb_from_ep(musb_to_hcd(musb), urb); - qh->is_ready = 0; __musb_giveback(musb, urb, status); qh->is_ready = ready; -- 1.5.6 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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