From 12e72feab5d9a23107f245b0f241a2484cbb5a4e Mon Sep 17 00:00:00 2001 From: Pete Zaitcev Date: Fri, 9 Jun 2006 22:03:32 -0700 Subject: [PATCH] [PATCH] USB: implement error event in usbmon Implement the "error" event in usbmon. Signed-off-by: Pete Zaitcev Signed-off-by: Greg Kroah-Hartman --- drivers/usb/mon/mon_main.c | 20 ++++++++++++++++---- drivers/usb/mon/mon_text.c | 27 +++++++++++++++++++++++++++ drivers/usb/mon/usb_mon.h | 1 + 3 files changed, 44 insertions(+), 4 deletions(-) diff --git a/drivers/usb/mon/mon_main.c b/drivers/usb/mon/mon_main.c index 86db92b4915b..275a66f83058 100644 --- a/drivers/usb/mon/mon_main.c +++ b/drivers/usb/mon/mon_main.c @@ -114,20 +114,32 @@ out_unlocked: /* */ -static void mon_submit_error(struct usb_bus *ubus, struct urb *urb, int err) +static void mon_submit_error(struct usb_bus *ubus, struct urb *urb, int error) { struct mon_bus *mbus; + unsigned long flags; + struct list_head *pos; + struct mon_reader *r; mbus = ubus->mon_bus; if (mbus == NULL) goto out_unlocked; - /* - * XXX Capture the error code and the 'E' event. - */ + spin_lock_irqsave(&mbus->lock, flags); + if (mbus->nreaders == 0) + goto out_locked; + mbus->cnt_events++; + list_for_each (pos, &mbus->r_list) { + r = list_entry(pos, struct mon_reader, r_link); + r->rnf_error(r->r_data, urb, error); + } + + spin_unlock_irqrestore(&mbus->lock, flags); return; +out_locked: + spin_unlock_irqrestore(&mbus->lock, flags); out_unlocked: return; } diff --git a/drivers/usb/mon/mon_text.c b/drivers/usb/mon/mon_text.c index 9f9236bf62d2..e02c1a30c4cd 100644 --- a/drivers/usb/mon/mon_text.c +++ b/drivers/usb/mon/mon_text.c @@ -182,6 +182,32 @@ static void mon_text_complete(void *data, struct urb *urb) mon_text_event(rp, urb, 'C'); } +static void mon_text_error(void *data, struct urb *urb, int error) +{ + struct mon_reader_text *rp = data; + struct mon_event_text *ep; + + if (rp->nevents >= EVENT_MAX || + (ep = kmem_cache_alloc(rp->e_slab, SLAB_ATOMIC)) == NULL) { + rp->r.m_bus->cnt_text_lost++; + return; + } + + ep->type = 'E'; + ep->pipe = urb->pipe; + ep->id = (unsigned long) urb; + ep->tstamp = 0; + ep->length = 0; + ep->status = error; + + ep->setup_flag = '-'; + ep->data_flag = 'E'; + + rp->nevents++; + list_add_tail(&ep->e_link, &rp->e_list); + wake_up(&rp->wait); +} + /* * Fetch next event from the circular buffer. */ @@ -235,6 +261,7 @@ static int mon_text_open(struct inode *inode, struct file *file) rp->r.m_bus = mbus; rp->r.r_data = rp; rp->r.rnf_submit = mon_text_submit; + rp->r.rnf_error = mon_text_error; rp->r.rnf_complete = mon_text_complete; snprintf(rp->slab_name, SLAB_NAME_SZ, "mon%dt_%lx", ubus->busnum, diff --git a/drivers/usb/mon/usb_mon.h b/drivers/usb/mon/usb_mon.h index 92702835b1e5..33678c24ebee 100644 --- a/drivers/usb/mon/usb_mon.h +++ b/drivers/usb/mon/usb_mon.h @@ -40,6 +40,7 @@ struct mon_reader { void *r_data; /* Use container_of instead? */ void (*rnf_submit)(void *data, struct urb *urb); + void (*rnf_error)(void *data, struct urb *urb, int error); void (*rnf_complete)(void *data, struct urb *urb); }; -- 2.20.1