Hi,
OGAWA Hirofumi <hirof...@mail.parknet.co.jp> writes:
> diff -puN drivers/usb/host/xhci-ring.c~xhci-fix-abort-race2
> drivers/usb/host/xhci-ring.c
> --- xhci/drivers/usb/host/xhci-ring.c~xhci-fix-abort-race2 2016-11-16
> 13:36:07.219329211 +0900
> +++ xhci-hirofumi/drivers/usb/host/xhci-ring.c 2016-11-16
> 13:36:07.221329211 +0900
> @@ -284,6 +284,61 @@ static bool xhci_mod_cmd_timer(struct xh
> return mod_delayed_work(system_wq, &xhci->cmd_timer, delay);
> }
>
> +static struct xhci_command *xhci_next_queued_cmd(struct xhci_hcd *xhci)
> +{
> + if (list_empty(&xhci->cmd_list))
> + return NULL;
> + return list_first_entry(&xhci->cmd_list, struct xhci_command, cmd_list);could use list_first_entry_or_null() here -- balbi
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