Patch "mtd: nand: qcom: fix config error for BCH" has been added to the 4.9-stable tree

Patch "mtd: nand: qcom: fix config error for BCH" has been added to the 4.9-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    mtd: nand: qcom: fix config error for BCH

to the 4.9-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     mtd-nand-qcom-fix-config-error-for-bch.patch
and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 10777de570016471fd929869c7830a7772893e39 Mon Sep 17 00:00:00 2001
From: Abhishek Sahu <absahu@codeaurora.org>
Date: Thu, 3 Aug 2017 17:56:39 +0200
Subject: mtd: nand: qcom: fix config error for BCH

From: Abhishek Sahu <absahu@codeaurora.org>

commit 10777de570016471fd929869c7830a7772893e39 upstream.

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 assigned to BCH_DISABLED.

Fixes: c76b78d8ec05a ("mtd: nand: Qualcomm NAND controller driver")
Signed-off-by: Abhishek Sahu <absahu@codeaurora.org>
Reviewed-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/mtd/nand/qcom_nandc.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/mtd/nand/qcom_nandc.c
+++ b/drivers/mtd/nand/qcom_nandc.c
@@ -1900,7 +1900,7 @@ static int qcom_nand_host_setup(struct q
 				| 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


Patches currently in stable-queue which might be from absahu@codeaurora.org are

queue-4.9/mtd-nand-qcom-fix-config-error-for-bch.patch
queue-4.9/mtd-nand-qcom-fix-read-failure-without-complete-bootchain.patch