[BUGI] IOCTL :Facing problems while acccessing data from kernel space

[n0g0013]

On 28.09-13:40, rashmi ns wrote:
[ ... ]
> I was trying to add a new ioctl command like
> > #define HDLCMODE _IOR('6',0xF,int)
> > when i trying to uprintf the data which was sent from the user-space in
> > the device-driver-ioctl-routine i'll get a different value than which was
> > passed. Can anybody please tell me why this is happening . I pass the
> > address of an integer where data is stored from the user space as third arg
> > to the ioctl call .

i would guess that it's a simple typo and your pointer conversions
are off somewhere.

i.e.

	uprintf( "%d", (int*)data ) ;

instead of

	uprintf( "%d", *(int*)data ) ;

otherwise, use a debugger or post the code.

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