[PATCH] mtd: rawnand: Fix misuses of of_match_node()

[Miquel Raynal]

On non-OF enabled platforms (CONFIG_OF is not set), of_match_node() will
expand to NULL. The of_device_id array pointed by the macro will then be
left unused. Let's mark the array __maybe_unused in this case to prevent
compiler warnings.

Signed-off-by: Miquel Raynal <miquel.raynal at bootlin.com>
---
 drivers/mtd/nand/raw/atmel/nand-controller.c | 2 +-
 drivers/mtd/nand/raw/atmel/pmecc.c           | 2 +-
 drivers/mtd/nand/raw/brcmnand/brcmnand.c     | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/mtd/nand/raw/atmel/nand-controller.c b/drivers/mtd/nand/raw/atmel/nand-controller.c
index 4ecbaccf5526..0209f7462635 100644
--- a/drivers/mtd/nand/raw/atmel/nand-controller.c
+++ b/drivers/mtd/nand/raw/atmel/nand-controller.c
@@ -1938,7 +1938,7 @@ static const struct atmel_smc_nand_ebi_csa_cfg sam9x60_ebi_csa = {
 	.nfd0_on_d16 = AT91_SFR_CCFG_NFD0_ON_D16,
 };
 
-static const struct of_device_id atmel_ebi_csa_regmap_of_ids[] = {
+static const struct of_device_id __maybe_unused atmel_ebi_csa_regmap_of_ids[] = {
 	{
 		.compatible = "atmel,at91sam9260-matrix",
 		.data = &at91sam9260_ebi_csa,
diff --git a/drivers/mtd/nand/raw/atmel/pmecc.c b/drivers/mtd/nand/raw/atmel/pmecc.c
index 43ebd78816c0..4d7dc8a9c373 100644
--- a/drivers/mtd/nand/raw/atmel/pmecc.c
+++ b/drivers/mtd/nand/raw/atmel/pmecc.c
@@ -920,7 +920,7 @@ static struct atmel_pmecc_caps sama5d2_caps = {
 	.correct_erased_chunks = true,
 };
 
-static const struct of_device_id atmel_pmecc_legacy_match[] = {
+static const struct of_device_id __maybe_unused atmel_pmecc_legacy_match[] = {
 	{ .compatible = "atmel,sama5d4-nand", &sama5d4_caps },
 	{ .compatible = "atmel,sama5d2-nand", &sama5d2_caps },
 	{ /* sentinel */ }
diff --git a/drivers/mtd/nand/raw/brcmnand/brcmnand.c b/drivers/mtd/nand/raw/brcmnand/brcmnand.c
index f75929783b94..7c0f02069ea0 100644
--- a/drivers/mtd/nand/raw/brcmnand/brcmnand.c
+++ b/drivers/mtd/nand/raw/brcmnand/brcmnand.c
@@ -2914,7 +2914,7 @@ const struct dev_pm_ops brcmnand_pm_ops = {
 };
 EXPORT_SYMBOL_GPL(brcmnand_pm_ops);
 
-static const struct of_device_id brcmnand_of_match[] = {
+static const struct of_device_id __maybe_unused brcmnand_of_match[] = {
 	{ .compatible = "brcm,brcmnand-v2.1" },
 	{ .compatible = "brcm,brcmnand-v2.2" },
 	{ .compatible = "brcm,brcmnand-v4.0" },
-- 
2.27.0