Merge tag 'floppy-for-5.8' of https://github.com/evdenis/linux-floppy into for-5...

Floppy patches for 5.8

Cleanups:
  - symbolic register names for x86,sparc64,sparc32,powerpc,parisc,m68k
  - split of local/global variables for drive,fdc
  - UBSAN warning suppress in setup_rw_floppy()

Changes were compile tested on arm, sparc64, powerpc, m68k. Many patches
introduce no binary changes by using defines instead of magic numbers.
The patches were also tested with syzkaller and simple write/read/format
tests on real hardware.

Signed-off-by: Denis Efremov <efremov@linux.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
* tag 'floppy-for-5.8' of https://github.com/evdenis/linux-floppy: (31 commits)
  floppy: suppress UBSAN warning in setup_rw_floppy()
  floppy: add defines for sizes of cmd & reply buffers of floppy_raw_cmd
  floppy: add FD_AUTODETECT_SIZE define for struct floppy_drive_params
  floppy: use print_hex_dump() in setup_DMA()
  floppy: cleanup: make set_fdc() always set current_drive and current_fd
  floppy: cleanup: get rid of current_reqD in favor of current_drive
  floppy: make sure to reset all FDCs upon resume()
  floppy: cleanup: do not iterate on current_fdc in do_floppy_init()
  floppy: cleanup: add a few comments about expectations in certain functions
  floppy: cleanup: do not iterate on current_fdc in DMA grab/release functions
  floppy: cleanup: make get_fdc_version() not rely on current_fdc anymore
  floppy: cleanup: make next_valid_format() not rely on current_drive anymore
  floppy: cleanup: make check_wp() not rely on current_{fdc,drive} anymore
  floppy: cleanup: make fdc_specify() not rely on current_{fdc,drive} anymore
  floppy: cleanup: make fdc_configure() not rely on current_fdc anymore
  floppy: cleanup: make perpendicular_mode() not rely on current_fdc anymore
  floppy: cleanup: make need_more_output() not rely on current_fdc anymore
  floppy: cleanup: make result() not rely on current_fdc anymore
  floppy: cleanup: make output_byte() not rely on current_fdc anymore
  floppy: cleanup: make wait_til_ready() not rely on current_fdc anymore
  ...