Building cmemk.ko and dsplinkk.ko for the GIT kernel is not a
straight-forward task. Two weeks ago, I went through exactly what you're
going through now. After a few frustrating days attempting to build these
modules, I gave up and decided to revert to the montavista kernel for the
time being.
Please see a post entitled "Building cmemk.ko and dsplinkk.ko" which I
posted on the 28th of February 2007. Kevin's advice and patch files were
extremely helpful, and will probably solve your current problems, if you are
confident enough at patching/hacking source files.
Good luck,
Bobby
From: Andy Ngo <[EMAIL PROTECTED]>
To: "davinci-linux-open-source @linux.davincidsp.com"
<[email protected]>
Subject: Problem compiling cmemk with GIT kernel
Date: Sun, 11 Mar 2007 00:22:58 -0800 (PST)
Hi,
I recently switched from the Montavista kernel to the GIT kernel. I need
to rebuild cmemk.ko and dsplinkk.ko
with the GIT kernel. When I build cmemk.ko, I get undefined references to
class_simple_*:
# make
make -C
/opt/montavista/pro/devkit/lsp/ti-davinci_evm-arm_v5t_le/linux-davinci-2.6
M=`pwd` ARCH=arm
CROSS_COMPILE=/opt/montavista/pro/devkit/arm/v5t_le/bin/arm_v5t_le- \
EXTRA_CFLAGS="-DUSE_UDEV=1 -DMAX_POOLS=128" modules
make[1]: Entering directory
`/opt/montavista/pro/devkit/lsp/ti-davinci_evm-arm_v5t_le/linux-davinci-2.6'
CC [M]
/opt/dvevm_1_10/cmem_1_01/packages/ti/sdo/linuxutils/cmem/src/module/cmemk.o
/opt/dvevm_1_10/cmem_1_01/packages/ti/sdo/linuxutils/cmem/src/module/cmemk.c:
In function `cmem_init':
/opt/dvevm_1_10/cmem_1_01/packages/ti/sdo/linuxutils/cmem/src/module/cmemk.c:581:
warning: implicit declaration of function `class_simple_create'
/opt/dvevm_1_10/cmem_1_01/packages/ti/sdo/linuxutils/cmem/src/module/cmemk.c:581:
warning: assignment makes pointer from integer without a cast
/opt/dvevm_1_10/cmem_1_01/packages/ti/sdo/linuxutils/cmem/src/module/cmemk.c:587:
warning: implicit declaration of function `class_simple_device_add'
/opt/dvevm_1_10/cmem_1_01/packages/ti/sdo/linuxutils/cmem/src/module/cmemk.c:
In function `cmem_exit':
/opt/dvevm_1_10/cmem_1_01/packages/ti/sdo/linuxutils/cmem/src/module/cmemk.c:686:
warning: implicit declaration of function `class_simple_device_remove'
/opt/dvevm_1_10/cmem_1_01/packages/ti/sdo/linuxutils/cmem/src/module/cmemk.c:689:
warning: implicit declaration of function `class_simple_destroy'
Building modules, stage 2.
MODPOST 1 modules
WARNING: "class_simple_destroy"
[/opt/dvevm_1_10/cmem_1_01/packages/ti/sdo/linuxutils/cmem/src/module/cmemk.ko]
undefined!
WARNING: "class_simple_device_remove"
[/opt/dvevm_1_10/cmem_1_01/packages/ti/sdo/linuxutils/cmem/src/module/cmemk.ko]
undefined!
WARNING: "class_simple_device_add"
[/opt/dvevm_1_10/cmem_1_01/packages/ti/sdo/linuxutils/cmem/src/module/cmemk.ko]
undefined!
WARNING: "class_simple_create"
[/opt/dvevm_1_10/cmem_1_01/packages/ti/sdo/linuxutils/cmem/src/module/cmemk.ko]
undefined!
CC
/opt/dvevm_1_10/cmem_1_01/packages/ti/sdo/linuxutils/cmem/src/module/cmemk.mod.o
LD [M]
/opt/dvevm_1_10/cmem_1_01/packages/ti/sdo/linuxutils/cmem/src/module/cmemk.ko
make[1]: Leaving directory
`/opt/montavista/pro/devkit/lsp/ti-davinci_evm-arm_v5t_le/linux-davinci-2.6'
When I load cmemk.ko, I get errors for those undefined references:
# insmod cmemk.ko phys_start=0x87800000 phys_end=0x88000000
pools=1x3145728,3x829440,1x61440,1x10240
cmemk: module license '(c) Texas Instruments' taints kernel.
cmemk: Unknown symbol class_simple_device_add
cmemk: Unknown symbol class_simple_destroy
cmemk: Unknown symbol class_simple_device_remove
cmemk: Unknown symbol class_simple_create
insmod: cannot insert `cmemk.ko': Unknown symbol in module (-1): No such
file or directory
I'm using the latest GIT kernel (2.6.20-omap1) and dvevm 1.10. I haven't
tried compiling dsplinkk.ko yet. Anyone has this same problem?
Am I doing something wrong? Thanks.
Regards,
Andy
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