problemas na hora de compilar um driver

[dop182]

Caro pessoal!!! Eu to tentando compilar o driver slmodem-2.9.10 do modem LG-I56N e ele da essa mensagem

modem.c: In function 'modem_reset':
modem.c: 1701: error: invalid storage class for function 'sregs_init'
modem.c: 1713: warning: implicit declaration of function 'sregs_init'
modem.c: AT top level:
modem.c: 1727: error: static declaration of 'sregs_init' follows non-static declaration
modem.c: 1713: previous implicit declaration of 'sregs_init' was here
make[1]: *** [modem.o] Error 1
make[1]: Leaving directory `/slmodem-2.9.10/modem'
make: *** [modem] Error 2

Meu ubuntu é o 5.10 ,o q pode ser ?