Hi Linus, Andrew,

the attached patch fixes a NULL pointer dereference Oops in my 
"Multimedia eXtension Board" driver.

The tda9840 i2c driver dereferences the argument pointer, but the MXB 
driver is supplying a NULL pointer for one of the commands. The patch 
makes this one command behave like the others, ie. it expects an int 
argument.

Please apply.

Thanks!
Michael Hunold.