linux-kernel - [PATCH v2 01/25] mtd: nand: qcom: fix config error for BCH

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Message-Id: <1500464893-11352-2-git-send-email-absahu@codeaurora.org>
Date:   Wed, 19 Jul 2017 17:17:49 +0530
From:   Abhishek Sahu <absahu@...eaurora.org>
To:     dwmw2@...radead.org, computersforpeace@...il.com,
        boris.brezillon@...e-electrons.com, marek.vasut@...il.com,
        richard@....at, cyrille.pitchen@...ev4u.fr, robh+dt@...nel.org,
        mark.rutland@....com
Cc:     linux-mtd@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        andy.gross@...aro.org, architt@...eaurora.org,
        sricharan@...eaurora.org, Abhishek Sahu <absahu@...eaurora.org>,
        stable@...r.kernel.org
Subject: [PATCH v2 01/25] mtd: nand: qcom: fix config error for BCH

The configuration for BCH is not correct in the current driver.
The ECC_CFG_ECC_DISABLE bit defines whether to enable or disable the
BCH ECC in which

	0x1 : BCH_DISABLED
	0x0 : BCH_ENABLED

But currently host->bch_enabled is being assined to BCH_DISABLED.

Fixes: c76b78d8ec05a ("mtd: nand: Qualcomm NAND controller driver")
Cc: stable@...r.kernel.org
Signed-off-by: Abhishek Sahu <absahu@...eaurora.org>
---
 drivers/mtd/nand/qcom_nandc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/mtd/nand/qcom_nandc.c b/drivers/mtd/nand/qcom_nandc.c
index 57d483a..bc0408c 100644
--- a/drivers/mtd/nand/qcom_nandc.c
+++ b/drivers/mtd/nand/qcom_nandc.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2016-2017, The Linux Foundation. All rights reserved.
  *
  * This software is licensed under the terms of the GNU General Public
  * License version 2, as published by the Free Software Foundation, and
@@ -1893,7 +1893,7 @@ static int qcom_nand_host_setup(struct qcom_nand_host *host)
 				| wide_bus << WIDE_FLASH
 				| 1 << DEV0_CFG1_ECC_DISABLE;
 
-	host->ecc_bch_cfg = host->bch_enabled << ECC_CFG_ECC_DISABLE
+	host->ecc_bch_cfg = !host->bch_enabled << ECC_CFG_ECC_DISABLE
 				| 0 << ECC_SW_RESET
 				| host->cw_data << ECC_NUM_DATA_BYTES
 				| 1 << ECC_FORCE_CLK_OPEN
-- 
QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation