[PATCH 0/8] mtd: nand: Support for new DT NAND driver

On Mon, Aug 18, 2014 at 09:39:53AM +0100, Lee Jones wrote:

On Thu, 14 Aug 2014, Brian Norris wrote:

quoted

drivers/mtd/nand/stm_nand_bch.c: In function 'bch_calc_timing_registers':
drivers/mtd/nand/stm_nand_bch.c:1022:6: warning: variable 'ren_half_off' set but not used [-Wunused-but-set-variable]
drivers/mtd/nand/stm_nand_bch.c:1021:6: warning: variable 'ren_half_on' set but not used [-Wunused-but-set-variable]

This I have never seen.  I guess -Wunused-but-set-variable is normally
off.  This issue has been present since the beginning of this endeavour
and exists in the original (internal) code.

BTW, you can get extra warnings by building with the W=[123] option to
the Makefile (e.g., 'make W=1').

$ make help
[...]
  make W=n   [targets] Enable extra gcc checks, n=1,2,3 where
		1: warnings which may be relevant and do not occur too often
		2: warnings which occur quite often but may still be relevant
		3: more obscure warnings, can most likely be ignored
		Multiple levels can be combined with W=12 or W=123

Brian