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usb: mtu3: add tracepoints to help debug

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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>
This commit is contained in:
Chunfeng Yun
2019-03-21 10:53:48 +08:00
committed by Greg Kroah-Hartman
parent 4aab6ad24a
commit 83374e035b
9 changed files with 347 additions and 1 deletions
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8
drivers/usb/mtu3/mtu3_debug.h
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@@ -39,4 +39,12 @@ static inline void ssusb_debugfs_remove_root(struct ssusb_mtk *ssusb) {}
#endif /* CONFIG_DEBUG_FS */
#if IS_ENABLED(CONFIG_TRACING)
void mtu3_dbg_trace(struct device *dev, const char *fmt, ...);
#else
static inline void mtu3_dbg_trace(struct device *dev, const char *fmt, ...) {}
#endif /* CONFIG_TRACING */
#endif /* __MTU3_DEBUG_H__ */