CVS log for src/sys/dev/i2c/cx24227.c

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Merge changes from current as of 20200406

Fix mis-placed parentheses.  PR kern/54812.

No need to use I2C_F_POLL here.

In cx24227_writereg() / cx24227_readreg(), return the error
from iic_acquire_bus(), not some bogus return value that can
potentially be confused for a real error code.

update from HEAD

Sync with HEAD

remove checks for failure after memory allocation calls that cannot fail:

  kmem_alloc() with KM_SLEEP
  kmem_zalloc() with KM_SLEEP
  percpu_alloc()
  pserialize_create()
  psref_class_create()

all of these paths include an assertion that the allocation has not failed,
so callers should not assert that again.

Sync with HEAD

Pull up following revision(s) (requested by jmcneill in ticket #634):
	distrib/sets/lists/modules/md.amd64: revision 1.51
	distrib/sets/lists/modules/md.evbppc.powerpc: revision 1.5
	distrib/sets/lists/modules/md.i386: revision 1.55
	distrib/sets/lists/modules/mi: revision 1.71
	sys/dev/i2c/au8522.c: revision 1.7
	sys/dev/i2c/cx24227.c: revision 1.7
	sys/dev/i2c/dbcool.c: revision 1.42
	sys/dev/i2c/hytp14.c: revision 1.3
	sys/dev/i2c/i2c_exec.c: revision 1.10
	sys/dev/i2c/lg3303.c: revision 1.9
	sys/dev/i2c/mt2131.c: revision 1.5
	sys/dev/i2c/nxt2k.c: revision 1.4
	sys/dev/i2c/sdtemp.c: revision 1.24
	sys/dev/i2c/spdmem_i2c.c: revision 1.10
	sys/dev/i2c/tvpll.c: revision 1.6
	sys/dev/i2c/xc3028.c: revision 1.7
	sys/dev/i2c/xc5k.c: revision 1.6
	sys/dev/i2c/zl10353.c: revision 1.4
	sys/modules/Makefile: revision 1.143
	sys/modules/i2cexec/Makefile: revision 1.1
i2c devices don't actually have a dependency on "iic" (the bus driver)
but on "i2cexec". Create an i2cexec module (i2c_exec.c) to mirror the
dependencies in files.i2c and switch device drivers to depend on "i2cexec"
module instead.
A kernel with a USB stack and no I2C controller / bus attachment would spit
out a bunch of "WARNING: module error: can't find builtin dependency `iic'"
messages at boot. This change solves that problem.

i2c devices don't actually have a dependency on "iic" (the bus driver)
but on "i2cexec". Create an i2cexec module (i2c_exec.c) to mirror the
dependencies in files.i2c and switch device drivers to depend on "i2cexec"
module instead.

A kernel with a USB stack and no I2C controller / bus attachment would spit
out a bunch of "WARNING: module error: can't find builtin dependency `iic'"
messages at boot. This change solves that problem.

sync with head

sync to latest -current.

always set *data to appease gcc -03 (some users of cx24227_readreg() don't
check return value for error).

now that iic is a module, add "iic" dependency to iic drivers

hide debug messages under CX24227_DEBUG

add QAM64/256 support

modularize cx24227

Add Conexant/Samsung CX24227/S5H1409 demodulator subroutines.