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| author | Chunfeng Yun <chunfeng.yun@mediatek.com> | 2019-03-21 03:53:48 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-03-26 08:40:14 +0100 |
| commit | 83374e035b6286731c5aa617844c7b724294c2a7 (patch) | |
| tree | 212fe872a4028092f183a1777089f6eee84fff3a /drivers/usb/mtu3/mtu3_gadget_ep0.c | |
| parent | usb: mtu3: move vbus and mode debugfs interfaces into mtu3_debugfs.c (diff) | |
| download | linux-83374e035b6286731c5aa617844c7b724294c2a7.tar.xz linux-83374e035b6286731c5aa617844c7b724294c2a7.zip | |
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 <chunfeng.yun@mediatek.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/mtu3/mtu3_gadget_ep0.c')
| -rw-r--r-- | drivers/usb/mtu3/mtu3_gadget_ep0.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/usb/mtu3/mtu3_gadget_ep0.c b/drivers/usb/mtu3/mtu3_gadget_ep0.c index 7cb7ac980446..4da216c99726 100644 --- a/drivers/usb/mtu3/mtu3_gadget_ep0.c +++ b/drivers/usb/mtu3/mtu3_gadget_ep0.c @@ -11,6 +11,8 @@ #include <linux/usb/composite.h> #include "mtu3.h" +#include "mtu3_debug.h" +#include "mtu3_trace.h" /* ep0 is always mtu3->in_eps[0] */ #define next_ep0_request(mtu) next_request((mtu)->ep0) @@ -634,6 +636,7 @@ __acquires(mtu->lock) int handled = 0; ep0_read_setup(mtu, &setup); + trace_mtu3_handle_setup(&setup); if ((setup.bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD) handled = handle_standard_request(mtu, &setup); @@ -710,6 +713,7 @@ irqreturn_t mtu3_ep0_isr(struct mtu3 *mtu) ret = IRQ_HANDLED; } dev_dbg(mtu->dev, "ep0_state: %s\n", decode_ep0_state(mtu)); + mtu3_dbg_trace(mtu->dev, "ep0_state %s", decode_ep0_state(mtu)); switch (mtu->ep0_state) { case MU3D_EP0_STATE_TX: |