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usb: dwc3: trace: pass trace buffer size to decoding functions

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Instead of assuming that our buffer is big enough, let's pass the
buffer size around so printing functions can make sure they won't
overflow the buffer.

Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This commit is contained in:
Felipe Balbi
2019-02-04 15:43:38 +02:00
parent 3aec99154d
commit 7790b3556f
2 changed files with 80 additions and 69 deletions
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7
drivers/usb/dwc3/trace.h
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@@ -59,8 +59,8 @@ DECLARE_EVENT_CLASS(dwc3_log_event,
__entry->ep0state = dwc->ep0state;
),
TP_printk("event (%08x): %s", __entry->event,
dwc3_decode_event(__get_str(str), __entry->event,
__entry->ep0state))
dwc3_decode_event(__get_str(str), DWC3_MSG_MAX,
__entry->event, __entry->ep0state))
);
DEFINE_EVENT(dwc3_log_event, dwc3_event,
@@ -86,7 +86,8 @@ DECLARE_EVENT_CLASS(dwc3_log_ctrl,
__entry->wIndex = le16_to_cpu(ctrl->wIndex);
__entry->wLength = le16_to_cpu(ctrl->wLength);
),
TP_printk("%s", dwc3_decode_ctrl(__get_str(str), __entry->bRequestType,
TP_printk("%s", dwc3_decode_ctrl(__get_str(str), DWC3_MSG_MAX,
__entry->bRequestType,
__entry->bRequest, __entry->wValue,
__entry->wIndex, __entry->wLength)
)