On 15-Nov-2002 Randy.Dunlap wrote:
> On Fri, 15 Nov 2002, Pete Zaitcev wrote:
>
>| > From: "Randy.Dunlap" <[EMAIL PROTECTED]>
>| > Date: Fri, 15 Nov 2002 08:40:36 -0800 (PST)
>| > This is the way it used to be many many moons ago.
>|
>| VERY many moons ago. Today, the same effect is accomplished by
>| module_init() without #ifdef bracket. If the module is compiled
>| into the kernel, do_initcalls does the call there.
>|
>| To make cpia initialize later than the USB, the proper configuration
>| must be used, which prohibits CPIA being 'y' and USB core 'm'.
>| It can be done without "if", by using dep_tristate as appropriate.
>| Also, the order in which cpia and usbcore are listed in the Makefile
>| is significant, it determines the order in which do_initcalls
>| calls them in case of them being 'y'.
>
> The case is both cpia and usb are 'y'.
> cpia is being init-ed before usbcore.
> Where's your patch/solution? 8;)
>
> As I said earlier (now deleted), controlling init order in 2.4
> is odd. In 2.5 it's much easier, but that doesn't matter for this
> problem. Mucking around with order in Makefile isn't a good solution
> IMO.
But... such a Makefile change DOES fix it. I see that the position of the
cpia driver in
drivers/media/video is anomalous: it started out as a parport driver
and now supports both parport and usb devices.
I moved the position of drivers/media.o to after drivers/usb.o in the Makefile,
and the problem is gone. I would like to get something like this into
2.4.20 as an immediate workaround, if at all possible. I guess to be less
invasive though, I should somehow remove cpia*.o from video.o and hence from
media.o, and create a cpiadrv.o so the
init position of other drivers in media.o is not messed with.
I'm assuming moving parport drivers down the list to after usb wont
break them, though.
I guess it can be justified because cpia is a special case: are there any
other kernel drivers
that support both parport and usb that can be used as a model for
what to do? (maybe scanners?)
--- Makefile Sun Nov 10 11:35:09 2002
+++ Makefile.usb_fix Fri Nov 15 13:40:21 2002
@@ -137,8 +137,7 @@
DRIVERS-y += drivers/char/char.o \
drivers/block/block.o \
drivers/misc/misc.o \
- drivers/net/net.o \
- drivers/media/media.o
+ drivers/net/net.o
DRIVERS-$(CONFIG_AGP) += drivers/char/agp/agp.o
DRIVERS-$(CONFIG_DRM_NEW) += drivers/char/drm/drm.o
DRIVERS-$(CONFIG_DRM_OLD) += drivers/char/drm-4.0/drm.o
@@ -179,6 +178,7 @@
DRIVERS-$(CONFIG_HAMRADIO) += drivers/net/hamradio/hamradio.o
DRIVERS-$(CONFIG_TC) += drivers/tc/tc.a
DRIVERS-$(CONFIG_USB) += drivers/usb/usbdrv.o
+DRIVERS-y += drivers/media/media.o
DRIVERS-$(CONFIG_INPUT) += drivers/input/inputdrv.o
DRIVERS-$(CONFIG_HIL) += drivers/hil/hil.o
DRIVERS-$(CONFIG_I2O) += drivers/message/i2o/i2o.o
>
> --
> ~Randy
> "I read part of it all the way through." -- Samuel Goldwyn
>
>
>
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----------------------------------
E-Mail: Duncan Haldane <[EMAIL PROTECTED]>
Date: 15-Nov-2002
Time: 13:58:14
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