mtd: nand: raw: atmel: Add error handling when rb-gpios missing

[platform/kernel/u-boot.git] / drivers / mtd / nand / raw / atmel / nand-controller.c

diff --git a/drivers/mtd/nand/raw/atmel/nand-controller.c b/drivers/mtd/nand/raw/atmel/nand-controller.c
index 9873d11..950e626 100644 (file)
--- a/drivers/mtd/nand/raw/atmel/nand-controller.c
+++ b/drivers/mtd/nand/raw/atmel/nand-controller.c
@@ -1601,10 +1601,13 @@ static struct atmel_nand *atmel_nand_create(struct atmel_nand_controller *nc,
                        nand->cs[i].rb.type = ATMEL_NAND_NATIVE_RB;
                        nand->cs[i].rb.id = val;
                } else {
-                       gpio_request_by_name_nodev(np, "rb-gpios", 0,
-                                                  &nand->cs[i].rb.gpio,
-                                                  GPIOD_IS_IN);
-                       nand->cs[i].rb.type = ATMEL_NAND_GPIO_RB;
+                       ret = gpio_request_by_name_nodev(np, "rb-gpios", 0,
+                                                        &nand->cs[i].rb.gpio,
+                                                        GPIOD_IS_IN);
+                       if (ret && ret != -ENOENT)
+                               dev_err(nc->dev, "Failed to get R/B gpio (err = %d)\n", ret);
+                       if (!ret)
+                               nand->cs[i].rb.type = ATMEL_NAND_GPIO_RB;
                }
 
                gpio_request_by_name_nodev(np, "cs-gpios", 0,