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Commit 2013d6ec authored by Arnd Bergmann's avatar Arnd Bergmann Committed by Greg Kroah-Hartman
Browse files

dmaengine: ste_dma40: fix unneeded variable warning 



[ Upstream commit 5d6fb560729a5d5554e23db8d00eb57cd0021083 ]

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: default avatarArnd Bergmann <arnd@arndb.de>
Reviewed-by: default avatarNathan Chancellor <natechancellor@gmail.com>
Reviewed-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20190712091357.744515-1-arnd@arndb.de


Signed-off-by: default avatarVinod Koul <vkoul@kernel.org>
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
parent 97ab07e1

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,