From ed1db3ada189c9af592c4d2971b22b482b68aafe Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Tue, 27 Oct 2009 15:26:50 -0400 Subject: [PATCH] USB: fix a bug in the scatter-gather library This patch (as1298) fixes a bug in the new scatter-gather URB facility. If an URB uses a scatterlist then it should not have the URB_NO_INTERRUPT flag set; otherwise the system won't be notified when the transfer completes. Signed-off-by: Alan Stern Acked-by: David Vrabel CC: Sarah Sharp Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/message.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c index 8d874cad6581..adb9c8ee0c1f 100644 --- a/drivers/usb/core/message.c +++ b/drivers/usb/core/message.c @@ -403,7 +403,7 @@ int usb_sg_init(struct usb_sg_request *io, struct usb_device *dev, if (!io->urbs) goto nomem; - urb_flags = URB_NO_INTERRUPT; + urb_flags = 0; if (dma) urb_flags |= URB_NO_TRANSFER_DMA_MAP; if (usb_pipein(pipe)) @@ -435,6 +435,7 @@ int usb_sg_init(struct usb_sg_request *io, struct usb_device *dev, io->urbs[0]->num_sgs = io->entries; io->entries = 1; } else { + urb_flags |= URB_NO_INTERRUPT; for_each_sg(sg, sg, io->entries, i) { unsigned len; -- 2.20.1