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Commit cfb9a1bc authored by Bin Liu's avatar Bin Liu Committed by Greg Kroah-Hartman
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usb: musb: add tracepoints to dump interrupt events 



This adds tracepoints to dump musb interrupt events.

Signed-off-by: default avatarBin Liu <b-liu@ti.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent c74173fd

drivers/usb/musb/musb_core.c

+1 −3
Original line number Diff line number Diff line
@@ -1588,9 +1588,7 @@ irqreturn_t musb_interrupt(struct musb *musb) 


	devctl = musb_readb(musb->mregs, MUSB_DEVCTL);



	dev_dbg(musb->controller, "** IRQ %s usb%04x tx%04x rx%04x\n",

		is_host_active(musb) ? "host" : "peripheral",

		musb->int_usb, musb->int_tx, musb->int_rx);

	trace_musb_isr(musb);



	/**

	 * According to Mentor Graphics' documentation, flowchart on page 98,

drivers/usb/musb/musb_trace.h

+21 −0
Original line number Diff line number Diff line
@@ -128,6 +128,27 @@ DEFINE_EVENT(musb_regl, musb_writel, 
	TP_ARGS(caller, addr, offset, data)

);



TRACE_EVENT(musb_isr,

	TP_PROTO(struct musb *musb),

	TP_ARGS(musb),

	TP_STRUCT__entry(

		__string(name, dev_name(musb->controller))

		__field(u8, int_usb)

		__field(u16, int_tx)

		__field(u16, int_rx)

	),

	TP_fast_assign(

		__assign_str(name, dev_name(musb->controller));

		__entry->int_usb = musb->int_usb;

		__entry->int_tx = musb->int_tx;

		__entry->int_rx = musb->int_rx;

	),

	TP_printk("%s: usb %02x, tx %04x, rx %04x",

		__get_str(name), __entry->int_usb,

		__entry->int_tx, __entry->int_rx

	)

);



#endif /* __MUSB_TRACE_H */



/* this part has to be here */