linux-kernel - [PATCH V2 10/11] of: mtd: drop support for NAND_ECC_SOFT_BCH as "soft

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Message-Id: <1460913104-27388-11-git-send-email-zajec5@gmail.com>
Date:	Sun, 17 Apr 2016 19:11:43 +0200
From:	Rafał Miłecki <zajec5@...il.com>
To:	Boris Brezillon <boris.brezillon@...e-electrons.com>
Cc:	linux-mtd@...ts.infradead.org,
	Rafał Miłecki <zajec5@...il.com>,
	Rob Herring <robh+dt@...nel.org>,
	Frank Rowand <frowand.list@...il.com>,
	Grant Likely <grant.likely@...aro.org>,
	devicetree@...r.kernel.org (open list:OPEN FIRMWARE AND FLATTENED
	DEVICE TREE), linux-kernel@...r.kernel.org (open list)
Subject: [PATCH V2 10/11] of: mtd: drop support for NAND_ECC_SOFT_BCH as "soft_bch" mapping

There isn't any difference between handling NAND_ECC_SOFT and
NAND_ECC_SOFT_BCH now. What matters is the new field called "algo".
Please note we're keeping backward DT compatibility. We are still
treating "soft_bch" value as the one setting Hamming algorithm, it's
just handled in of_get_nand_ecc_algo now.

Signed-off-by: Rafał Miłecki <zajec5@...il.com>
---
 drivers/of/of_mtd.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/of/of_mtd.c b/drivers/of/of_mtd.c
index 15d056e..a70a38c 100644
--- a/drivers/of/of_mtd.c
+++ b/drivers/of/of_mtd.c
@@ -22,7 +22,6 @@ static const char *nand_ecc_modes[] = {
 	[NAND_ECC_HW]		= "hw",
 	[NAND_ECC_HW_SYNDROME]	= "hw_syndrome",
 	[NAND_ECC_HW_OOB_FIRST]	= "hw_oob_first",
-	[NAND_ECC_SOFT_BCH]	= "soft_bch",
 };
 
 /**
@@ -45,6 +44,14 @@ int of_get_nand_ecc_mode(struct device_node *np)
 		if (!strcasecmp(pm, nand_ecc_modes[i]))
 			return i;
 
+	/*
+	 * For backward compatibility we support few obsoleted values that don't
+	 * have their mappings into nand_ecc_modes_t anymore (they were merged
+	 * with other enums).
+	 */
+	if (!strcasecmp(pm, "soft_bch"))
+		return NAND_ECC_SOFT;
+
 	return -ENODEV;
 }
 EXPORT_SYMBOL_GPL(of_get_nand_ecc_mode);
-- 
1.8.4.5