diff options
| author | Arvid Brodin <arvid.brodin@enea.com> | 2011-11-23 18:10:41 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-11-26 20:02:47 -0800 |
| commit | e08f6a2790aaf3563e7800399321c0fb9a6c6636 (patch) | |
| tree | fd15cb23fc0f36fd687d3ec585af27c7d6721c80 | |
| parent | c8421147926fcacf53081a36438a0bed394da9f5 (diff) | |
usb/isp1760: Simpler queue head list code.
Small code refactoring to ease the real fix in patch #2.
Signed-off-by: Arvid Brodin <arvid.brodin@enea.com>
Tested-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | drivers/usb/host/isp1760-hcd.c | 44 |
1 files changed, 19 insertions, 25 deletions
diff --git a/drivers/usb/host/isp1760-hcd.c b/drivers/usb/host/isp1760-hcd.c index 27dfab80ed8f..a760fbf18ebe 100644 --- a/drivers/usb/host/isp1760-hcd.c +++ b/drivers/usb/host/isp1760-hcd.c @@ -32,6 +32,13 @@ static struct kmem_cache *qtd_cachep; static struct kmem_cache *qh_cachep; static struct kmem_cache *urb_listitem_cachep; +enum queue_head_types { + QH_CONTROL, + QH_BULK, + QH_INTERRUPT, + QH_END +}; + struct isp1760_hcd { u32 hcs_params; spinlock_t lock; @@ -40,7 +47,7 @@ struct isp1760_hcd { struct slotinfo int_slots[32]; int int_done_map; struct memory_chunk memory_pool[BLOCKS]; - struct list_head controlqhs, bulkqhs, interruptqhs; + struct list_head qh_list[QH_END]; /* periodic schedule support */ #define DEFAULT_I_TDPS 1024 @@ -406,12 +413,12 @@ static int priv_init(struct usb_hcd *hcd) { struct isp1760_hcd *priv = hcd_to_priv(hcd); u32 hcc_params; + int i; spin_lock_init(&priv->lock); - INIT_LIST_HEAD(&priv->interruptqhs); - INIT_LIST_HEAD(&priv->controlqhs); - INIT_LIST_HEAD(&priv->bulkqhs); + for (i = 0; i < QH_END; i++) + INIT_LIST_HEAD(&priv->qh_list[i]); /* * hw default: 1K periodic list heads, one per frame. @@ -933,6 +940,7 @@ void schedule_ptds(struct usb_hcd *hcd) struct usb_host_endpoint *ep; LIST_HEAD(urb_list); struct urb_listitem *urb_listitem, *urb_listitem_next; + int i; if (!hcd) { WARN_ON(1); @@ -944,8 +952,8 @@ void schedule_ptds(struct usb_hcd *hcd) /* * check finished/retired xfers, transfer payloads, call urb_done() */ - ep_queue = &priv->interruptqhs; - while (ep_queue) { + for (i = 0; i < QH_END; i++) { + ep_queue = &priv->qh_list[i]; list_for_each_entry_safe(qh, qh_next, ep_queue, qh_list) { ep = list_entry(qh->qtd_list.next, struct isp1760_qtd, qtd_list)->urb->ep; @@ -959,13 +967,6 @@ void schedule_ptds(struct usb_hcd *hcd) } } } - - if (ep_queue == &priv->interruptqhs) - ep_queue = &priv->controlqhs; - else if (ep_queue == &priv->controlqhs) - ep_queue = &priv->bulkqhs; - else - ep_queue = NULL; } list_for_each_entry_safe(urb_listitem, urb_listitem_next, &urb_list, @@ -998,17 +999,10 @@ void schedule_ptds(struct usb_hcd *hcd) * * I'm sure this scheme could be improved upon! */ - ep_queue = &priv->controlqhs; - while (ep_queue) { + for (i = 0; i < QH_END; i++) { + ep_queue = &priv->qh_list[i]; list_for_each_entry_safe(qh, qh_next, ep_queue, qh_list) enqueue_qtds(hcd, qh); - - if (ep_queue == &priv->controlqhs) - ep_queue = &priv->interruptqhs; - else if (ep_queue == &priv->interruptqhs) - ep_queue = &priv->bulkqhs; - else - ep_queue = NULL; } } @@ -1543,16 +1537,16 @@ static int isp1760_urb_enqueue(struct usb_hcd *hcd, struct urb *urb, switch (usb_pipetype(urb->pipe)) { case PIPE_CONTROL: - ep_queue = &priv->controlqhs; + ep_queue = &priv->qh_list[QH_CONTROL]; break; case PIPE_BULK: - ep_queue = &priv->bulkqhs; + ep_queue = &priv->qh_list[QH_BULK]; break; case PIPE_INTERRUPT: if (urb->interval < 0) return -EINVAL; /* FIXME: Check bandwidth */ - ep_queue = &priv->interruptqhs; + ep_queue = &priv->qh_list[QH_INTERRUPT]; break; case PIPE_ISOCHRONOUS: dev_err(hcd->self.controller, "%s: isochronous USB packets " |