xhci: fix sparse warning in xhci-trace.h

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@gmail.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>

diff --git a/drivers/usb/host/xhci-trace.h b/drivers/usb/host/xhci-trace.h
index afe093340834a1ebf77510b2c58dfdcfe4f31e3a..dde3959b7a33a1924a21ee915c0135d23dc64ca7 100644 (file)
--- a/drivers/usb/host/xhci-trace.h
+++ b/drivers/usb/host/xhci-trace.h
@@ -116,7 +116,7 @@ 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;