parport_serial and serial driver?

parport_serial and serial driver?

[Pavel Janík]

Hi,

I use non-modular kernel with parport_serial driver built in (NetMos-based
cards, 2.4.latest-vanilla patched for NetMos PCI IDs). The problem is that
parport_serial is initialized before serial driver and thus both serial
ports on that card are detected as ttyS00. This patch helped me:

--- linux.orig/Makefile	Wed Aug 28 13:46:45 2002
+++ linux/Makefile	Wed Aug 28 13:46:51 2002
@@ -130,12 +130,13 @@
 DRIVERS-  :=
 
 DRIVERS-$(CONFIG_ACPI) += drivers/acpi/acpi.o
-DRIVERS-$(CONFIG_PARPORT) += drivers/parport/driver.o
 DRIVERS-y += drivers/char/char.o \
 	drivers/block/block.o \
 	drivers/misc/misc.o \
 	drivers/net/net.o \
 	drivers/media/media.o
+# Change the order of initialization of parport_serial and serial
+DRIVERS-$(CONFIG_PARPORT) += drivers/parport/driver.o
 DRIVERS-$(CONFIG_AGP) += drivers/char/agp/agp.o
 DRIVERS-$(CONFIG_DRM_NEW) += drivers/char/drm/drm.o
 DRIVERS-$(CONFIG_DRM_OLD) += drivers/char/drm-4.0/drm.o


When the same kernel has parport_serial as a module, everything works
fine, because serial is already initialized.

BTW - Is there a way to specify the order of initialization (module_init)
of certain drivers? What is the proper solution to my problem?
-- 
Pavel Janík

panic("IRQ, you lose...");
                  -- 2.2.16 arch/mips/sgi/kernel/indy_int.c

Re: parport_serial and serial driver?

[Tim Waugh]

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On Wed, Aug 28, 2002 at 06:50:50PM +0200, Pavel Janík wrote:

> I use non-modular kernel with parport_serial driver built in (NetMos-based
> cards, 2.4.latest-vanilla patched for NetMos PCI IDs). The problem is that
> parport_serial is initialized before serial driver and thus both serial
> ports on that card are detected as ttyS00. This patch helped me:

Doesn't that then break ppdev?  I think the correct solution was
posted here not long ago---to add a call to the serial driver's init
function in parport_serial (with a protection against it being run
multiple times).

Tim.
*/

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