[RFC 07/21] xhci: fix sparse warning in xhci-trace.h

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This patch fixes the following sparse warnings:
drivers/usb/host/./xhci-trace.h:116:1: warning: cast to restricted __le32
drivers/usb/host/./xhci-trace.h:116:1: warning: cast to restricted __le32
drivers/usb/host/./xhci-trace.h:116:1: warning: restricted __le32 degrades to
integer
drivers/usb/host/./xhci-trace.h:116:1: warning: restricted __le32 degrades to
integer

by converting the field 'trb' of the trace buffer entry structure from array
with elements of type __le32 to an array with elements of type u8.
Into the trb array are copied the contents of the TRB that generated the event.
The trace-cmd tool with the help of plugin_xhci.py will use this field to
parse the TRB contents in a human readable way.

Signed-off-by: Xenia Ragiadakou <burzalodowa@xxxxxxxxx>
---
 drivers/usb/host/xhci-trace.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/host/xhci-trace.h b/drivers/usb/host/xhci-trace.h
index 59a0b03..132abda 100644
--- a/drivers/usb/host/xhci-trace.h
+++ b/drivers/usb/host/xhci-trace.h
@@ -121,7 +121,7 @@ DECLARE_EVENT_CLASS(xhci_log_event,
 		__field(u64, dma)
 		__field(u32, status)
 		__field(u32, flags)
-		__dynamic_array(__le32, trb, 4)
+		__dynamic_array(u8, trb, sizeof(struct xhci_generic_trb))
 	),
 	TP_fast_assign(
 		__entry->va = trb_va;
-- 
1.8.3.4

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