From 3d6fdf7563d0a67c6973cf421f7405524ed8bdaf Mon Sep 17 00:00:00 2001 From: Justin Waters Date: Fri, 3 Apr 2009 21:06:53 +0100 Subject: [ARM] 5446/1: ohci-at91: Limit vbus_pin assignment to the size of the array Currently, the vbus_pin assignment loop is limited by the value of the "ports" variable in the platform data. Now that the vbus_pin array is no longer flexible, we can use its actual size. Signed-off-by: Justin Waters Acked-by: Andrew Victor Signed-off-by: Russell King --- drivers/usb/host/ohci-at91.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/usb/host') diff --git a/drivers/usb/host/ohci-at91.c b/drivers/usb/host/ohci-at91.c index 4ed228a89943..bb5e6f671578 100644 --- a/drivers/usb/host/ohci-at91.c +++ b/drivers/usb/host/ohci-at91.c @@ -280,7 +280,7 @@ static int ohci_hcd_at91_drv_probe(struct platform_device *pdev) * are always powered while this driver is active, and use * active-low power switches. */ - for (i = 0; i < pdata->ports; i++) { + for (i = 0; i < ARRAY_SIZE(pdata->vbus_pin); i++) { if (pdata->vbus_pin[i] <= 0) continue; gpio_request(pdata->vbus_pin[i], "ohci_vbus"); @@ -298,7 +298,7 @@ static int ohci_hcd_at91_drv_remove(struct platform_device *pdev) int i; if (pdata) { - for (i = 0; i < pdata->ports; i++) { + for (i = 0; i < ARRAY_SIZE(pdata->vbus_pin); i++) { if (pdata->vbus_pin[i] <= 0) continue; gpio_direction_output(pdata->vbus_pin[i], 1); -- cgit v1.2.3 From 7f0406db5fe4dd3ad3cbd53830239a87d68156fd Mon Sep 17 00:00:00 2001 From: David Vrabel Date: Wed, 8 Apr 2009 17:36:29 +0000 Subject: USB: whci-hcd: provide a endpoint_reset method Provide a endpoint_reset method to reset sequence number and current window. This QHead information can only be changed while the qset is not in a schedule. Signed-off-by: David Vrabel Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/whci/asl.c | 3 ++- drivers/usb/host/whci/hcd.c | 23 +++++++++++++++++++++++ drivers/usb/host/whci/pzl.c | 4 ++-- drivers/usb/host/whci/qset.c | 24 +++++++++++++++++++++--- drivers/usb/host/whci/whcd.h | 1 + drivers/usb/host/whci/whci-hc.h | 1 + 6 files changed, 50 insertions(+), 6 deletions(-) (limited to 'drivers/usb/host') diff --git a/drivers/usb/host/whci/asl.c b/drivers/usb/host/whci/asl.c index 958751ccea43..be753f664993 100644 --- a/drivers/usb/host/whci/asl.c +++ b/drivers/usb/host/whci/asl.c @@ -122,7 +122,8 @@ static uint32_t process_qset(struct whc *whc, struct whc_qset *qset) process_inactive_qtd(whc, qset, td); } - update |= qset_add_qtds(whc, qset); + if (!qset->remove) + update |= qset_add_qtds(whc, qset); done: /* diff --git a/drivers/usb/host/whci/hcd.c b/drivers/usb/host/whci/hcd.c index 1569afd6245b..e019a5058ab8 100644 --- a/drivers/usb/host/whci/hcd.c +++ b/drivers/usb/host/whci/hcd.c @@ -186,6 +186,28 @@ static void whc_endpoint_disable(struct usb_hcd *usb_hcd, } } +static void whc_endpoint_reset(struct usb_hcd *usb_hcd, + struct usb_host_endpoint *ep) +{ + struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd); + struct whc *whc = wusbhc_to_whc(wusbhc); + struct whc_qset *qset; + + qset = ep->hcpriv; + if (qset) { + qset->remove = 1; + + if (usb_endpoint_xfer_bulk(&ep->desc) + || usb_endpoint_xfer_control(&ep->desc)) + queue_work(whc->workqueue, &whc->async_work); + else + queue_work(whc->workqueue, &whc->periodic_work); + + qset_reset(whc, qset); + } +} + + static struct hc_driver whc_hc_driver = { .description = "whci-hcd", .product_desc = "Wireless host controller", @@ -200,6 +222,7 @@ static struct hc_driver whc_hc_driver = { .urb_enqueue = whc_urb_enqueue, .urb_dequeue = whc_urb_dequeue, .endpoint_disable = whc_endpoint_disable, + .endpoint_reset = whc_endpoint_reset, .hub_status_data = wusbhc_rh_status_data, .hub_control = wusbhc_rh_control, diff --git a/drivers/usb/host/whci/pzl.c b/drivers/usb/host/whci/pzl.c index df8b85f07092..0c40022a6b2f 100644 --- a/drivers/usb/host/whci/pzl.c +++ b/drivers/usb/host/whci/pzl.c @@ -128,7 +128,8 @@ static enum whc_update pzl_process_qset(struct whc *whc, struct whc_qset *qset) process_inactive_qtd(whc, qset, td); } - update |= qset_add_qtds(whc, qset); + if (!qset->remove) + update |= qset_add_qtds(whc, qset); done: /* @@ -353,7 +354,6 @@ void pzl_qset_delete(struct whc *whc, struct whc_qset *qset) qset_delete(whc, qset); } - /** * pzl_init - initialize the periodic zone list * @whc: the WHCI host controller diff --git a/drivers/usb/host/whci/qset.c b/drivers/usb/host/whci/qset.c index 7be74314ee12..640b38fbd051 100644 --- a/drivers/usb/host/whci/qset.c +++ b/drivers/usb/host/whci/qset.c @@ -89,11 +89,16 @@ static void qset_fill_qh(struct whc_qset *qset, struct urb *urb) QH_INFO3_TX_RATE_53_3 | QH_INFO3_TX_PWR(0) /* 0 == max power */ ); + + qset->qh.cur_window = cpu_to_le32((1 << qset->max_burst) - 1); } /** * qset_clear - clear fields in a qset so it may be reinserted into a - * schedule + * schedule. + * + * The sequence number and current window are not cleared (see + * qset_reset()). */ void qset_clear(struct whc *whc, struct whc_qset *qset) { @@ -101,9 +106,8 @@ void qset_clear(struct whc *whc, struct whc_qset *qset) qset->remove = 0; qset->qh.link = cpu_to_le32(QH_LINK_NTDS(8) | QH_LINK_T); - qset->qh.status = cpu_to_le16(QH_STATUS_ICUR(qset->td_start)); + qset->qh.status = qset->qh.status & QH_STATUS_SEQ_MASK; qset->qh.err_count = 0; - qset->qh.cur_window = cpu_to_le32((1 << qset->max_burst) - 1); qset->qh.scratch[0] = 0; qset->qh.scratch[1] = 0; qset->qh.scratch[2] = 0; @@ -113,6 +117,20 @@ void qset_clear(struct whc *whc, struct whc_qset *qset) init_completion(&qset->remove_complete); } +/** + * qset_reset - reset endpoint state in a qset. + * + * Clears the sequence number and current window. This qset must not + * be in the ASL or PZL. + */ +void qset_reset(struct whc *whc, struct whc_qset *qset) +{ + wait_for_completion(&qset->remove_complete); + + qset->qh.status &= ~QH_STATUS_SEQ_MASK; + qset->qh.cur_window = cpu_to_le32((1 << qset->max_burst) - 1); +} + /** * get_qset - get the qset for an async endpoint * diff --git a/drivers/usb/host/whci/whcd.h b/drivers/usb/host/whci/whcd.h index d3543a181dc9..24e94d983c5e 100644 --- a/drivers/usb/host/whci/whcd.h +++ b/drivers/usb/host/whci/whcd.h @@ -184,6 +184,7 @@ void qset_free(struct whc *whc, struct whc_qset *qset); struct whc_qset *get_qset(struct whc *whc, struct urb *urb, gfp_t mem_flags); void qset_delete(struct whc *whc, struct whc_qset *qset); void qset_clear(struct whc *whc, struct whc_qset *qset); +void qset_reset(struct whc *whc, struct whc_qset *qset); int qset_add_urb(struct whc *whc, struct whc_qset *qset, struct urb *urb, gfp_t mem_flags); void qset_free_std(struct whc *whc, struct whc_std *std); diff --git a/drivers/usb/host/whci/whci-hc.h b/drivers/usb/host/whci/whci-hc.h index 51df7e313b38..794dba0d0f0a 100644 --- a/drivers/usb/host/whci/whci-hc.h +++ b/drivers/usb/host/whci/whci-hc.h @@ -185,6 +185,7 @@ struct whc_qhead { #define QH_STATUS_FLOW_CTRL (1 << 15) #define QH_STATUS_ICUR(i) ((i) << 5) #define QH_STATUS_TO_ICUR(s) (((s) >> 5) & 0x7) +#define QH_STATUS_SEQ_MASK 0x1f /** * usb_pipe_to_qh_type - USB core pipe type to QH transfer type -- cgit v1.2.3 From f720af91ec2c67e9a1abbd935570f4b4e1f0dd54 Mon Sep 17 00:00:00 2001 From: David Vrabel Date: Wed, 8 Apr 2009 17:36:31 +0000 Subject: USB: whci-hcd: check return value of usb_hcd_link_urb_to_ep() Check the return value of usb_hcd_link_urb_to_ep() and do not add the urb to the ASL/PZL if it returns an error. Omitting the check results in urbs that appear to be submitted successfully but then cannot be unliked (because usb_hcd_check_unlink_urb() returns an error). This can cause khubd (for example) to block forever in usb_kill_urb(). Signed-off-by: David Vrabel Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/whci/asl.c | 12 +++++++++--- drivers/usb/host/whci/pzl.c | 12 +++++++++--- 2 files changed, 18 insertions(+), 6 deletions(-) (limited to 'drivers/usb/host') diff --git a/drivers/usb/host/whci/asl.c b/drivers/usb/host/whci/asl.c index be753f664993..c2050785a819 100644 --- a/drivers/usb/host/whci/asl.c +++ b/drivers/usb/host/whci/asl.c @@ -255,23 +255,29 @@ int asl_urb_enqueue(struct whc *whc, struct urb *urb, gfp_t mem_flags) spin_lock_irqsave(&whc->lock, flags); + err = usb_hcd_link_urb_to_ep(&whc->wusbhc.usb_hcd, urb); + if (err < 0) { + spin_unlock_irqrestore(&whc->lock, flags); + return err; + } + qset = get_qset(whc, urb, GFP_ATOMIC); if (qset == NULL) err = -ENOMEM; else err = qset_add_urb(whc, qset, urb, GFP_ATOMIC); if (!err) { - usb_hcd_link_urb_to_ep(&whc->wusbhc.usb_hcd, urb); if (!qset->in_sw_list) asl_qset_insert_begin(whc, qset); - } + } else + usb_hcd_unlink_urb_from_ep(&whc->wusbhc.usb_hcd, urb); spin_unlock_irqrestore(&whc->lock, flags); if (!err) queue_work(whc->workqueue, &whc->async_work); - return 0; + return err; } /** diff --git a/drivers/usb/host/whci/pzl.c b/drivers/usb/host/whci/pzl.c index 0c40022a6b2f..ff4ef9e910d9 100644 --- a/drivers/usb/host/whci/pzl.c +++ b/drivers/usb/host/whci/pzl.c @@ -283,23 +283,29 @@ int pzl_urb_enqueue(struct whc *whc, struct urb *urb, gfp_t mem_flags) spin_lock_irqsave(&whc->lock, flags); + err = usb_hcd_link_urb_to_ep(&whc->wusbhc.usb_hcd, urb); + if (err < 0) { + spin_unlock_irqrestore(&whc->lock, flags); + return err; + } + qset = get_qset(whc, urb, GFP_ATOMIC); if (qset == NULL) err = -ENOMEM; else err = qset_add_urb(whc, qset, urb, GFP_ATOMIC); if (!err) { - usb_hcd_link_urb_to_ep(&whc->wusbhc.usb_hcd, urb); if (!qset->in_sw_list) qset_insert_in_sw_list(whc, qset); - } + } else + usb_hcd_unlink_urb_from_ep(&whc->wusbhc.usb_hcd, urb); spin_unlock_irqrestore(&whc->lock, flags); if (!err) queue_work(whc->workqueue, &whc->periodic_work); - return 0; + return err; } /** -- cgit v1.2.3 From c065c60e83c006611caed23d1320450fcd709398 Mon Sep 17 00:00:00 2001 From: Dan Streetman Date: Tue, 21 Apr 2009 13:37:12 -0400 Subject: USB: ehci-sched.c: EHCI SITD scheduling bugfix Without this patch, the driver won't check that the last fully-occupied uframe for a new split transaction was vacant beforehand. This can lead to a situation in which the first 188 bytes of a 192-byte isochronous transfer are scheduled in the same uframe as an existing interrupt transfer. The resulting schedule looks like this: uframe 0: 188-byte isoc-OUT SSPLIT, 8-byte int-IN SSPLIT uframe 1: 4-byte isoc-OUT SSPLIT The SSPLITs are intermingled, causing an error in the downstream hub's TT. If you are having problems with devices or hub ports resetting, or failed interrupt transfers, when you start using a USB audio or video (Isochronous) device, this patch may help. Signed-off-by: Dan Streetman Reported-by: Kung James Acked-by: David Brownell Cc: Alan Stern --- drivers/usb/host/ehci-sched.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/usb/host') diff --git a/drivers/usb/host/ehci-sched.c b/drivers/usb/host/ehci-sched.c index ada5d2ba297b..556d0ec0c1f8 100644 --- a/drivers/usb/host/ehci-sched.c +++ b/drivers/usb/host/ehci-sched.c @@ -323,7 +323,7 @@ static int tt_available ( * already scheduled transactions */ if (125 < usecs) { - int ufs = (usecs / 125) - 1; + int ufs = (usecs / 125); int i; for (i = uframe; i < (uframe + ufs) && i < 8; i++) if (0 < tt_usecs[i]) { -- cgit v1.2.3