Merge series "spi: Various Cleanups" from Uwe Kleine-König <u.kleine-koenig@pengutronix.de>:

Hello,

while trying to understand how the spi framework makes use of the core
device driver stuff (to fix a deadlock) I found these simplifications
and improvements.

They are build-tested with allmodconfig on arm64, m68k, powerpc, riscv,
s390, sparc64 and x86_64.

Best regards
Uwe

Uwe Kleine-König (4):
  spi: Move comment about chipselect check to the right place
  spi: Remove unused function spi_busnum_to_master()
  spi: Reorder functions to simplify the next commit
  spi: Make several public functions private to spi.c

 Documentation/spi/spi-summary.rst |   8 -
 drivers/spi/spi.c                 | 237 ++++++++++++------------------
 include/linux/spi/spi.h           |  55 -------
 3 files changed, 95 insertions(+), 205 deletions(-)

base-commit: 9e1ff307
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2.30.2