Hi!
I've lately tried to run a ISA card (HP 82341, with drivers from the
Linux GPIB project, latest version), but the module failed to get
loaded. Modprobe said it couldn't find a symbol (Undefined symbol
'isapnp_read_byte'), although it was present in /boot/System.map and
/proc/kallsyms. After some googleing, trying to compile a new kernel,
looking into code, etc, I found out what the problem was. The function
"isapnp_read_byte" was no longer been exported. You can find the line
in question here [1] (note the #if 0). The patch that did this change
was this [2] one.
I'm not sure, but as I understand it, it was not intended to comment
this EXPORT_SYMBOLS(isapnp_read_byte) out. So it probably just
happened by accident?
I've attached a patch for the latest stable kernel (2.6.20.1). Please
apply it.
Greetings
Sacher
[1] http://www.gelato.unsw.edu.au/lxr/source/drivers/pnp/isapnp/core.c#L948
[2] http://lkml.org/lkml/2005/6/20/307
--- linux-2.6.20.1/drivers/pnp/isapnp/core.c.old 2007-02-23 16:20:46.000000000 +0100
+++ linux-2.6.20.1/drivers/pnp/isapnp/core.c 2007-02-23 16:21:25.000000000 +0100
@@ -943,9 +943,7 @@
EXPORT_SYMBOL(isapnp_present);
EXPORT_SYMBOL(isapnp_cfg_begin);
EXPORT_SYMBOL(isapnp_cfg_end);
-#if 0
EXPORT_SYMBOL(isapnp_read_byte);
-#endif
EXPORT_SYMBOL(isapnp_write_byte);
static int isapnp_read_resources(struct pnp_dev *dev, struct pnp_resource_table *res)
