Trouble compiling SMi2012 module

[Rodrigo Severo]

Hi,

I've been trying to follow the instructions on BuildingKernelModule page (https://code.google.com/p/easycap-somagic-linux/wiki/BuildingKernelModule).

Have already tried with kernel 3.12.20 and 3.14.4. On both tried I got the same error:

drivers/media/usb/smi2021/smi2021_main.c: In function ‘smi2021_set_mode’:
drivers/media/usb/smi2021/smi2021_main.c:47:2: error: implicit declaration of function ‘kzalloc’ [-Werror=implicit-function-declaration]
drivers/media/usb/smi2021/smi2021_main.c:47:20: warning: initialization makes pointer from integer without a cast [enabled by default]
drivers/media/usb/smi2021/smi2021_main.c:60:2: error: implicit declaration of function ‘kfree’ [-Werror=implicit-function-declaration]
drivers/media/usb/smi2021/smi2021_main.c: In function ‘smi2021_set_reg’:
drivers/media/usb/smi2021/smi2021_main.c:120:15: warning: assignment makes pointer from integer without a cast [enabled by default]
drivers/media/usb/smi2021/smi2021_main.c: In function ‘smi2021_get_reg’:
drivers/media/usb/smi2021/smi2021_main.c:178:15: warning: assignment makes pointer from integer without a cast [enabled by default]
drivers/media/usb/smi2021/smi2021_main.c: In function ‘smi2021_setup_iso_transfer’:
drivers/media/usb/smi2021/smi2021_main.c:602:22: warning: assignment makes pointer from integer without a cast [enabled by default]
drivers/media/usb/smi2021/smi2021_main.c: In function ‘smi2021_usb_probe’:
drivers/media/usb/smi2021/smi2021_main.c:814:10: warning: assignment makes pointer from integer without a cast [enabled by default]
cc1: some warnings being treated as errors
make[4]: *** [drivers/media/usb/smi2021/smi2021_main.o] Error 1
make[3]: *** [drivers/media/usb/smi2021] Error 2

Any ideas on how to fix it?

Regards,

Rodrigo

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[Anthony Griffiths]

hi rodrigo, I'm having exactly the same problem as you with the easycap somagic. Did you ever solve this?

if so could you share how you did it? thanks.

[Jon Arne Jørgensen]

As I answered in another thread here, the fix is to add the line:
#include <linux/vmalloc.h>

To the list of "#include" statements in "smi2021.h"

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