rashmi ns wrote:
#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 .
maybe you should show how you do it in kernel. I suspect you try to access it as an int* as well, which is wrong. The kernel already does take care of this for you. Just write the integer you want to pass into the data area and you're done.
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