Commit 5d6fb560 authored Jul 12, 2019 by Arnd Bergmann Committed by Vinod Koul Jul 22, 2019

dmaengine: ste_dma40: fix unneeded variable warning



clang-9 points out that there are two variables that depending on the
configuration may only be used in an ARRAY_SIZE() expression but not
referenced:

drivers/dma/ste_dma40.c:145:12: error: variable 'd40_backup_regs' is not needed and will not be emitted [-Werror,-Wunneeded-internal-declaration]
static u32 d40_backup_regs[] = {
           ^
drivers/dma/ste_dma40.c:214:12: error: variable 'd40_backup_regs_chan' is not needed and will not be emitted [-Werror,-Wunneeded-internal-declaration]
static u32 d40_backup_regs_chan[] = {

Mark these __maybe_unused to shut up the warning.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Nathan Chancellor <natechancellor@gmail.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20190712091357.744515-1-arnd@arndb.de


Signed-off-by: Vinod Koul <vkoul@kernel.org>

parent 6f4722b1

drivers/dma/ste_dma40.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -142,7 +142,7 @@ enum d40_events {
		* when the DMA hw is powered off.
		* TODO: Add save/restore of D40_DREG_GCC on dma40 v3 or later, if that works.
		*/
		static u32 d40_backup_regs[] = {
		static __maybe_unused u32 d40_backup_regs[] = {
		D40_DREG_LCPA,
		D40_DREG_LCLA,
		D40_DREG_PRMSE,
		@@ -211,7 +211,7 @@ static u32 d40_backup_regs_v4b[] = {

		#define BACKUP_REGS_SZ_V4B ARRAY_SIZE(d40_backup_regs_v4b)

		static u32 d40_backup_regs_chan[] = {
		static __maybe_unused u32 d40_backup_regs_chan[] = {
		D40_CHAN_REG_SSCFG,
		D40_CHAN_REG_SSELT,
		D40_CHAN_REG_SSPTR,

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