[RFC,09/14] mtd: rawnand: ams-delta: Handle more GPIO pins as optional
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Message ID 20200212003929.6682-10-jmkrzyszt@gmail.com
State New
Headers show
  • mtd: rawnand: ams-delta: Prepare for merging
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Commit Message

Janusz Krzysztofik Feb. 12, 2020, 12:39 a.m. UTC
In order to make the driver more useful on platforms other than Amstrad
Delta, allow GPIO descriptor pointers of possibly non-critical NWP and
NCE pins to be initialised as NULL.

Signed-off-by: Janusz Krzysztofik <jmkrzyszt@gmail.com>
 drivers/mtd/nand/raw/ams-delta.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

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diff --git a/drivers/mtd/nand/raw/ams-delta.c b/drivers/mtd/nand/raw/ams-delta.c
index c481d73e3dcb..0c88e94e9b71 100644
--- a/drivers/mtd/nand/raw/ams-delta.c
+++ b/drivers/mtd/nand/raw/ams-delta.c
@@ -264,14 +264,16 @@  static int ams_delta_init(struct platform_device *pdev)
 	platform_set_drvdata(pdev, priv);
 	/* Set chip enabled but write protected */
-	priv->gpiod_nwp = devm_gpiod_get(&pdev->dev, "nwp", GPIOD_OUT_HIGH);
+	priv->gpiod_nwp = devm_gpiod_get_optional(&pdev->dev, "nwp",
+						  GPIOD_OUT_HIGH);
 	if (IS_ERR(priv->gpiod_nwp)) {
 		err = PTR_ERR(priv->gpiod_nwp);
 		dev_err(&pdev->dev, "NWP GPIO request failed (%d)\n", err);
 		return err;
-	priv->gpiod_nce = devm_gpiod_get(&pdev->dev, "nce", GPIOD_OUT_LOW);
+	priv->gpiod_nce = devm_gpiod_get_optional(&pdev->dev, "nce",
+						  GPIOD_OUT_LOW);
 	if (IS_ERR(priv->gpiod_nce)) {
 		err = PTR_ERR(priv->gpiod_nce);
 		dev_err(&pdev->dev, "NCE GPIO request failed (%d)\n", err);