s3c2440 에 spidev 올릴때 오류 메시지가 나오는데.. 혹시 아시는 분계신가요?? [kobject_add failed for spi0 with -EEXIST, don't try to register things with

## s3c24xx_spi.c s3c24xx_spi_init laod
## s3c24xx_spi.c s3c24xx_spi_probe laod
## spi.c :: spi_alloc_master load
## spi.c :: spi_alloc_master load end
## s3c24xx_spi.c s3c24xx_spi_irq laod
## spi.c :: spi_register_master load
## spi.c :: scan_boardinfo load
## spi.c :: spi_new_device load
## s3c24xx_spi.c s3c24xx_spi_setup laod
## s3c24xx_spi.c s3c24xx_spi_tohw laod
## s3c24xx_spi.c s3c24xx_spi_setupxfer laod
## s3c24xx_spi.c s3c24xx_spi_tohw laod
## s3c24xx_spi.c s3c24xx_spi_chipsel laod
## spi.c :: spi_uevent
## spi.c :: scan_boardinfo load end
## spi.c :: spi_register_master load end
## s3c24xx_spi.c s3c24xx_spi_probe laod
## spi.c :: spi_alloc_master load
## spi.c :: spi_alloc_master load end
## s3c24xx_spi.c s3c24xx_spi_irq laod
## spi.c :: spi_register_master load
kobject_add failed for spi0 with -EEXIST, don't try to register things with the same name in the same directory.
## spi.c :: spi_register_master load [class_device_add error]
## spi.c :: spi_register_master load end
s3c2410-spi s3c2410-spi.1: Failed to register SPI master
s3c2410-spi: probe of s3c2410-spi.1 failed with error -17
## spidev.c::spidev init
## spi.c :: spi_register_driver load
## spi.c :: spi_match_device
## spi.c :: spi_drv_probe load
## spidev.c::spidev probe
spidev: probe of spi0.0 failed with error -12
## spidev.c::spidev init end

해당 소스에 printk 로 위와 같이 메시지를 출력 해보았습니다...

kobject_add failed for spi0 with -EEXIST, don't try to register things with the same name in the same directory.

라는 오류 메시지가 나타나는데.. 혹시... 이오류 메시지에 대해 아시는 분계신가요???