Re: "io mapaddr 0xXXXXX not valid" in smc-mca in 2.4.x

From: J . A . Magallon (
Date: Mon Feb 26 2001 - 15:07:00 EST

On 02.26 Stephen Mollett wrote:
> In kernel version 2.4.x (x from 0 to 2-ac3), the
> smc-mca driver gives many errors like the following on
> the console log:
> io mapaddr 0xXXXXX not valid at smc-mca.c:YYY!
> where XXXXX is an address within the shared-memory
> assigned to the adapter card, and YYY is 378, 398 or
> 408.

AFAIK, it is a bug in the driver. That output is generated by
arch/i386/lib/iodebug.c, a routine to catch buggy drivers like that.
Look at
include/asm-i386/io.h, line 112 or so:
 * Temporary debugging check to catch old code using
 * unmapped ISA addresses. Will be removed in 2.4.
  extern void *__io_virt_debug(unsigned long x, const char *file, int line);
  extern unsigned long __io_phys_debug(unsigned long x, const char *file, int li
  #define __io_virt(x) __io_virt_debug((unsigned long)(x), __FILE__, __LINE__)
//#define __io_phys(x) __io_phys_debug((unsigned long)(x), __FILE__, __LINE__)
  #define __io_virt(x) ((void *)(x))
//#define __io_phys(x) __pa(x)

So you should mail driver mantainer, if it is known....

J.A. Magallon                                                      $> cd pub                                          $> more beer

Linux werewolf 2.4.2-ac4 #2 SMP Mon Feb 26 00:21:23 CET 2001 i686

- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to More majordomo info at Please read the FAQ at

This archive was generated by hypermail 2b29 : Wed Feb 28 2001 - 21:00:11 EST