[PATCH v6 16/21] mtd: spi-nor-core: Do not make invalid quad enable fatal

[Pratyush Yadav]

The Micron MT35XU512ABA flash does not support the quad enable bit. But
instead of programming the Quad Enable Require field to 000b ("Device
does not have a QE bit"), it is programmed to 111b ("Reserved").

While this is technically incorrect, it is not reason enough to abort
BFPT parsing. Instead, continue BFPT parsing assuming there is no quad
enable bit present.

Signed-off-by: Pratyush Yadav <p.yadav at ti.com>
---
 drivers/mtd/spi/spi-nor-core.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/mtd/spi/spi-nor-core.c b/drivers/mtd/spi/spi-nor-core.c
index 95743c3fb6..13a112b6a6 100644
--- a/drivers/mtd/spi/spi-nor-core.c
+++ b/drivers/mtd/spi/spi-nor-core.c
@@ -2093,7 +2093,8 @@ static int spi_nor_parse_bfpt(struct spi_nor *nor,
 		break;
 #endif
 	default:
-		return -EINVAL;
+		dev_dbg(nor->dev, "BFPT QER reserved value used\n");
+		break;
 	}
 
 	/* Stop here if JESD216 rev B. */
-- 
2.27.0