diff options
Diffstat (limited to 'drivers/usb/host')
| -rw-r--r-- | drivers/usb/host/imx21-hcd.c | 56 |
1 files changed, 39 insertions, 17 deletions
diff --git a/drivers/usb/host/imx21-hcd.c b/drivers/usb/host/imx21-hcd.c index 1be144167da4..890a41ccc5cd 100644 --- a/drivers/usb/host/imx21-hcd.c +++ b/drivers/usb/host/imx21-hcd.c @@ -390,15 +390,19 @@ static void schedule_nonisoc_etd(struct imx21 *imx21, struct urb *urb); /* Endpoint now idle - release it's ETD(s) or asssign to queued request */ static void ep_idle(struct imx21 *imx21, struct ep_priv *ep_priv) { - int etd_num; int i; for (i = 0; i < NUM_ISO_ETDS; i++) { - etd_num = ep_priv->etd[i]; + int etd_num = ep_priv->etd[i]; + struct etd_priv *etd; if (etd_num < 0) continue; + etd = &imx21->etd[etd_num]; ep_priv->etd[i] = -1; + + free_dmem(imx21, etd); /* for isoc */ + if (list_empty(&imx21->queue_for_etd)) { free_etd(imx21, etd_num); continue; @@ -576,30 +580,43 @@ static struct ep_priv *alloc_isoc_ep( int i; ep_priv = kzalloc(sizeof(struct ep_priv), GFP_ATOMIC); - if (ep_priv == NULL) + if (!ep_priv) return NULL; - /* Allocate the ETDs */ - for (i = 0; i < NUM_ISO_ETDS; i++) { - ep_priv->etd[i] = alloc_etd(imx21); - if (ep_priv->etd[i] < 0) { - int j; - dev_err(imx21->dev, "isoc: Couldn't allocate etd\n"); - for (j = 0; j < i; j++) - free_etd(imx21, ep_priv->etd[j]); - goto alloc_etd_failed; - } - imx21->etd[ep_priv->etd[i]].ep = ep; - } + for (i = 0; i < NUM_ISO_ETDS; i++) + ep_priv->etd[i] = -1; INIT_LIST_HEAD(&ep_priv->td_list); ep_priv->ep = ep; ep->hcpriv = ep_priv; return ep_priv; +} + +static int alloc_isoc_etds(struct imx21 *imx21, struct ep_priv *ep_priv) +{ + int i, j; + int etd_num; + + /* Allocate the ETDs if required */ + for (i = 0; i < NUM_ISO_ETDS; i++) { + if (ep_priv->etd[i] < 0) { + etd_num = alloc_etd(imx21); + if (etd_num < 0) + goto alloc_etd_failed; + + ep_priv->etd[i] = etd_num; + imx21->etd[etd_num].ep = ep_priv->ep; + } + } + return 0; alloc_etd_failed: - kfree(ep_priv); - return NULL; + dev_err(imx21->dev, "isoc: Couldn't allocate etd\n"); + for (j = 0; j < i; j++) { + free_etd(imx21, ep_priv->etd[j]); + ep_priv->etd[j] = -1; + } + return -ENOMEM; } static int imx21_hc_urb_enqueue_isoc(struct usb_hcd *hcd, @@ -639,6 +656,10 @@ static int imx21_hc_urb_enqueue_isoc(struct usb_hcd *hcd, ep_priv = ep->hcpriv; } + ret = alloc_isoc_etds(imx21, ep_priv); + if (ret) + goto alloc_etd_failed; + ret = usb_hcd_link_urb_to_ep(hcd, urb); if (ret) goto link_failed; @@ -718,6 +739,7 @@ alloc_dmem_failed: usb_hcd_unlink_urb_from_ep(hcd, urb); link_failed: +alloc_etd_failed: alloc_ep_failed: spin_unlock_irqrestore(&imx21->lock, flags); kfree(urb_priv->isoc_td); |