diff options
author | Chunfeng Yun <chunfeng.yun@mediatek.com> | 2019-03-21 10:53:48 +0800 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-03-26 16:40:14 +0900 |
commit | 83374e035b6286731c5aa617844c7b724294c2a7 (patch) | |
tree | 212fe872a4028092f183a1777089f6eee84fff3a /drivers/usb/mtu3/mtu3_trace.c | |
parent | 4aab6ad24a101b9fa3779acc27eefd8a730a6f63 (diff) | |
download | linux-83374e035b6286731c5aa617844c7b724294c2a7.tar.bz2 |
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_trace.c')
-rw-r--r-- | drivers/usb/mtu3/mtu3_trace.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/usb/mtu3/mtu3_trace.c b/drivers/usb/mtu3/mtu3_trace.c new file mode 100644 index 000000000000..4f5e7857ec31 --- /dev/null +++ b/drivers/usb/mtu3/mtu3_trace.c @@ -0,0 +1,23 @@ +// SPDX-License-Identifier: GPL-2.0 +/** + * mtu3_trace.c - trace support + * + * Copyright (C) 2019 MediaTek Inc. + * + * Author: Chunfeng Yun <chunfeng.yun@mediatek.com> + */ + +#define CREATE_TRACE_POINTS +#include "mtu3_trace.h" + +void mtu3_dbg_trace(struct device *dev, const char *fmt, ...) +{ + struct va_format vaf; + va_list args; + + va_start(args, fmt); + vaf.fmt = fmt; + vaf.va = &args; + trace_mtu3_log(dev, &vaf); + va_end(args); +} |