On Fri, 13 Jan 2012, Sebastian Andrzej Siewior wrote:
> Commit 689d6eac ("USB: UHCI: add native scatter-gather support(v1))
> added sg support to uhci but forgot to set the sg_table so this feature
> remained unused.
>
> Cc: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>
> Cc: Ming Lei <tom.leiming@xxxxxxxxx>
> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
> ---
> v1..v2: moved to uhci_start() as suggested by Alan.
>
> drivers/usb/host/uhci-hcd.c | 3 +++
> 1 files changed, 3 insertions(+), 0 deletions(-)
>
> diff --git a/drivers/usb/host/uhci-hcd.c b/drivers/usb/host/uhci-hcd.c
> index c8ae199..167be7e 100644
> --- a/drivers/usb/host/uhci-hcd.c
> +++ b/drivers/usb/host/uhci-hcd.c
> @@ -565,6 +565,9 @@ static int uhci_start(struct usb_hcd *hcd)
> struct dentry __maybe_unused *dentry;
>
> hcd->uses_new_polling = 1;
> + /* Accept arbitrarily long scatter-gather lists */
> + if (!(hcd->driver->flags & HCD_LOCAL_MEM))
> + hcd->self.sg_tablesize = ~0;
>
> spin_lock_init(&uhci->lock);
> setup_timer(&uhci->fsbr_timer, uhci_fsbr_timeout,
Acked-by: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>
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