From 83374e035b6286731c5aa617844c7b724294c2a7 Mon Sep 17 00:00:00 2001 From: Chunfeng Yun Date: Thu, 21 Mar 2019 10:53:48 +0800 Subject: usb: mtu3: add tracepoints to help debug This patch implements a few initial tracepoints for the mtu3 driver. More traces can be added as necessary in order to ease the task of debugging. Signed-off-by: Chunfeng Yun Signed-off-by: Greg Kroah-Hartman --- drivers/usb/mtu3/mtu3_gadget.c | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) (limited to 'drivers/usb/mtu3/mtu3_gadget.c') diff --git a/drivers/usb/mtu3/mtu3_gadget.c b/drivers/usb/mtu3/mtu3_gadget.c index fe798b94a357..f93732e53fd8 100644 --- a/drivers/usb/mtu3/mtu3_gadget.c +++ b/drivers/usb/mtu3/mtu3_gadget.c @@ -8,6 +8,7 @@ */ #include "mtu3.h" +#include "mtu3_trace.h" void mtu3_req_complete(struct mtu3_ep *mep, struct usb_request *req, int status) @@ -25,6 +26,8 @@ __acquires(mep->mtu->lock) mtu = mreq->mtu; mep->busy = 1; + + trace_mtu3_req_complete(mreq); spin_unlock(&mtu->lock); /* ep0 makes use of PIO, needn't unmap it */ @@ -201,6 +204,7 @@ error: spin_unlock_irqrestore(&mtu->lock, flags); dev_dbg(mtu->dev, "%s active_ep=%d\n", __func__, mtu->active_ep); + trace_mtu3_gadget_ep_enable(mep); return ret; } @@ -212,6 +216,7 @@ static int mtu3_gadget_ep_disable(struct usb_ep *ep) unsigned long flags; dev_dbg(mtu->dev, "%s %s\n", __func__, mep->name); + trace_mtu3_gadget_ep_disable(mep); if (!(mep->flags & MTU3_EP_ENABLED)) { dev_warn(mtu->dev, "%s is already disabled\n", mep->name); @@ -242,13 +247,17 @@ struct usb_request *mtu3_alloc_request(struct usb_ep *ep, gfp_t gfp_flags) mreq->request.dma = DMA_ADDR_INVALID; mreq->epnum = mep->epnum; mreq->mep = mep; + trace_mtu3_alloc_request(mreq); return &mreq->request; } void mtu3_free_request(struct usb_ep *ep, struct usb_request *req) { - kfree(to_mtu3_request(req)); + struct mtu3_request *mreq = to_mtu3_request(req); + + trace_mtu3_free_request(mreq); + kfree(mreq); } static int mtu3_gadget_queue(struct usb_ep *ep, @@ -316,6 +325,7 @@ static int mtu3_gadget_queue(struct usb_ep *ep, error: spin_unlock_irqrestore(&mtu->lock, flags); + trace_mtu3_gadget_queue(mreq); return ret; } @@ -333,6 +343,7 @@ static int mtu3_gadget_dequeue(struct usb_ep *ep, struct usb_request *req) return -EINVAL; dev_dbg(mtu->dev, "%s : req=%p\n", __func__, req); + trace_mtu3_gadget_dequeue(mreq); spin_lock_irqsave(&mtu->lock, flags); @@ -403,6 +414,7 @@ static int mtu3_gadget_ep_set_halt(struct usb_ep *ep, int value) done: spin_unlock_irqrestore(&mtu->lock, flags); + trace_mtu3_gadget_ep_set_halt(mep); return ret; } -- cgit v1.2.3