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usb: dwc3: trace: don't save pointers 

There was another instance where we were
holding pointers which could be long gone.

Fix that by caching only values pointed to
by such pointer.

Because no crash has been observed, this patch
will be sent on v3.19 merge window, instead of
-rc.

Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Felipe Balbi 2014-11-20 10:12:32 -06:00
parent f905bc6883
commit a4722fd3f2
1 changed files with 8 additions and 4 deletions
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12
drivers/usb/dwc3/trace.h
View File

@ -175,17 +175,21 @@ DECLARE_EVENT_CLASS(dwc3_log_gadget_ep_cmd,
TP_STRUCT__entry(
__dynamic_array(char, name, DWC3_MSG_MAX)
__field(unsigned int, cmd)
__field(struct dwc3_gadget_ep_cmd_params *, params)
__field(u32, param0)
__field(u32, param1)
__field(u32, param2)
),
TP_fast_assign(
snprintf(__get_str(name), DWC3_MSG_MAX, "%s", dep->name);
__entry->cmd = cmd;
__entry->params = params;
__entry->param0 = params->param0;
__entry->param1 = params->param1;
__entry->param2 = params->param2;
),
TP_printk("%s: cmd '%s' [%d] params %08x %08x %08x",
__get_str(name), dwc3_gadget_ep_cmd_string(__entry->cmd),
__entry->cmd, __entry->params->param0,
__entry->params->param1, __entry->params->param2
__entry->cmd, __entry->param0,
__entry->param1, __entry->param2
)
);