libmachdev: avoid doing pointer arithmetic to get the port_info

Previously, mach_convert_port_to_device would return a pointer to
struct emul_device, which is embedded in struct mach_device.  In order
to get to the port_info structure which is right before that,
device_to_pi would subtract offsetof (struct mach_device, dev) from
the pointer.  Avoid that by making mach_convert_port_to_device return
a pointer to struct mach_device instead.

* libmachdev/ds_routines.c (mach_convert_port_to_device): Return
struct mach_dev *.
(device_to_pi): Remove now unused function.
(ds_device_close): Adjust accordingly.
(ds_device_write): Likewise.
(ds_device_write_inband): Likewise.
(ds_device_read): Likewise.
(ds_device_read_inband): Likewise.
(ds_device_set_status): Likewise.
(ds_device_get_status): Likewise.
(ds_device_set_filter): Likewise.

0 files changed, 0 insertions, 0 deletions