tracing: Remove comparing of NULL to va_list in trace_array_vprintk()
Olof Johansson stated the following: Comparing a va_list with NULL is bogus. It's supposed to be treated like an opaque type and only be manipulated with va_* accessors. Olof noticed that this code broke the ARM builds: kernel/trace/trace.c: In function 'trace_array_vprintk': kernel/trace/trace.c:1364: error: invalid operands to binary == (have 'va_list' and 'void *') kernel/trace/trace.c: In function 'tracing_mark_write': kernel/trace/trace.c:3349: error: incompatible type for argument 3 of 'trace_vprintk' This patch partly reverts c13d2f7c and re-installs the original mark_printk() mechanism. Reported-by: Olof Johansson <olof@lixom.net> Signed-off-by: Carsten Emde <C.Emde@osadl.org> LKML-Reference: <4B1BAB74.104@osadl.org> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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