Embeded Linux inside Kernel compilation error warning summary

Error A:

WARNING:DRIVERS/SPI/HI_SPI.O (. data+0x0): section mismatch in reference from the variable hi_spi_platform_driver to the FU Nction. Init.text:hi_spi_probe ()
The variable hi_spi_platform_driver references
The function __init hi_spi_probe ()
If the reference is valid then annotate the
Variable with __init* or __refdata (see LINUX/INIT.H) or name the variable:
*_template, *_timer, *_sht, *_ops, *_probe, *_probe_one, *_console

Resolution A:

__init uses two places for the same C file.

Remove Hi_spi_probe () before the __init

Error B:

Drivers/net/ethernet/hieth-gmac/bcm53101.c:249:13:warning: ' bcm53101_dump ' defined but not used [-wunused-function]
static void Bcm53101_dump (void)

Resolution B:

The function is useless to write.

Mask off function

Embeded Linux inside Kernel compilation error warning summary