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usb: dwc3: debug: remove static char buffer from dwc3_decode_event()

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Instead, we can require caller to pass a buffer for the function to
use. This cleans things quite a bit.

Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This commit is contained in:
Felipe Balbi 2017-04-28 11:28:35 +03:00
parent e42f09b85f
commit 3587f36a12
2 changed files with 9 additions and 8 deletions
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13
drivers/usb/dwc3/debug.h
View File

@ -173,9 +173,8 @@ static inline const char *dwc3_ep0_state_string(enum dwc3_ep0_state state)
* @event: the event code
*/
static inline const char *
dwc3_gadget_event_string(const struct dwc3_event_devt *event)
dwc3_gadget_event_string(char *str, const struct dwc3_event_devt *event)
{
static char str[256];
enum dwc3_link_state state = event->event_info & DWC3_LINK_STATE_MASK;
switch (event->type) {
@ -228,10 +227,10 @@ dwc3_gadget_event_string(const struct dwc3_event_devt *event)
* @event: then event code
*/
static inline const char *
dwc3_ep_event_string(const struct dwc3_event_depevt *event, u32 ep0state)
dwc3_ep_event_string(char *str, const struct dwc3_event_depevt *event,
u32 ep0state)
{
u8 epnum = event->endpoint_number;
static char str[256];
size_t len;
int status;
int ret;
@ -332,14 +331,14 @@ static inline const char *dwc3_gadget_event_type_string(u8 event)
}
}
static inline const char *dwc3_decode_event(u32 event, u32 ep0state)
static inline const char *dwc3_decode_event(char *str, u32 event, u32 ep0state)
{
const union dwc3_event evt = (union dwc3_event) event;
if (evt.type.is_devspec)
return dwc3_gadget_event_string(&evt.devt);
return dwc3_gadget_event_string(str, &evt.devt);
else
return dwc3_ep_event_string(&evt.depevt, ep0state);
return dwc3_ep_event_string(str, &evt.depevt, ep0state);
}
static inline const char *dwc3_ep_cmd_status_string(int status)

4
drivers/usb/dwc3/trace.h
View File

@ -60,13 +60,15 @@ DECLARE_EVENT_CLASS(dwc3_log_event,
TP_STRUCT__entry(
__field(u32, event)
__field(u32, ep0state)
__dynamic_array(char, str, DWC3_MSG_MAX)
),
TP_fast_assign(
__entry->event = event;
__entry->ep0state = dwc->ep0state;
),
TP_printk("event (%08x): %s", __entry->event,
dwc3_decode_event(__entry->event, __entry->ep0state))
dwc3_decode_event(__get_str(str), __entry->event,
__entry->ep0state))
);
DEFINE_EVENT(dwc3_log_event, dwc3_event,