RE: [PATCH 5/6] ath6kl: convert ath6kl_dbg() and ath6kl_dbg_dump() into functions

From: David Laight
Date: Thu Jan 05 2012 - 05:43:15 EST



> > + va_start(args, fmt);
> > + ath6kl_printk(KERN_DEBUG, fmt, &args);
>
> Passing a va_list as an argument?
> I believe this doesn't work.
> I think you'll need to add and use:

Passing a va_list certainly does work - vprintf() etc.
What is problematical is taking the address of a va_list.

The likely problem is a 'levels of indirection' one
because, when va_list needs to be a struct (very
likely when arguments are passed in registers),
it is often declared as as array type.

David


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