mirror of
https://github.com/Telecominfraproject/wlan-ap.git
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61 lines
2.5 KiB
Diff
61 lines
2.5 KiB
Diff
From ebb6e582d6bd8a8a2c660c230fa7db1abb48a71c Mon Sep 17 00:00:00 2001
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From: Md Sadre Alam <quic_mdalam@quicinc.com>
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Date: Wed, 5 Apr 2023 10:56:43 +0530
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Subject: [PATCH 187/281] mtd: rawnand: qcom: Fix ECC error for 4-bit ECC
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serial NAND
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This change will fix the ECC error for 4-bit ECC serial nand
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devices.
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The default ECC set by dts and currently its 8-bit ECC, since
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mostly all raw nand devices will support minimum 8-bit ECC.
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But for serial nand, which is having 4-bit ECC support, then
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read form device will be fail.
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error:
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[ 34.776865] CPU: 0 PID: 1 Comm: swapper/0 Tainted: G W 6.1.19 #0
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[ 34.786742] Hardware name: Qualcomm Technologies, Inc. IPQ5332 MI01.2 (DT)
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[ 34.794381] Call trace:
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[ 34.801058] dump_backtrace.part.0+0xb8/0xc4
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[ 34.803404] show_stack+0x14/0x20
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[ 34.807917] dump_stack_lvl+0x68/0x80
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[ 34.811130] dump_stack+0x14/0x2c
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[ 34.814775] ubi_io_read+0x11c/0x310
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[ 34.818074] ubi_io_read_ec_hdr+0x4c/0x1e4
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[ 34.821721] ubi_attach+0x3dc/0x12d0
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[ 34.825626] ubi_attach_mtd_dev+0x47c/0xaf0
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[ 34.829359] ubi_init+0x134/0x31c
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[ 34.833264] do_one_initcall+0x4c/0x1c0
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[ 34.836737] kernel_init_freeable+0x204/0x268
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[ 34.840384] kernel_init+0x20/0x120
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[ 34.844897] ret_from_fork+0x10/0x20
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[ 34.849066] ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes from PEB 241:0, read only 64 bytes, retry
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[ 34.852574] ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes from PEB 241:0, read only 64 bytes, retry
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[ 34.863791] ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes from PEB 241:0, read only 64 bytes, retry
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[ 34.875079] ubi0 error: ubi_io_read: error -74 (ECC error) while reading 64 bytes from PEB 241:0, read 64 bytes
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[ 34.885806] CPU: 0 PID: 1 Comm: swapper/0 Tainted: G W 6.1.19 #0
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Change-Id: Iab2798cd76f26eedb618bdbc621308f5ef556fde
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Signed-off-by: Md Sadre Alam <quic_mdalam@quicinc.com>
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---
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drivers/mtd/nand/raw/qcom_nandc.c | 2 ++
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1 file changed, 2 insertions(+)
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diff --git a/drivers/mtd/nand/raw/qcom_nandc.c b/drivers/mtd/nand/raw/qcom_nandc.c
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index 5466452fe21b..f2696d1ac125 100644
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--- a/drivers/mtd/nand/raw/qcom_nandc.c
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+++ b/drivers/mtd/nand/raw/qcom_nandc.c
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@@ -2937,6 +2937,8 @@ static int qcom_nand_attach_chip(struct nand_chip *chip)
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return ret;
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}
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+ ecc->strength = mtd->oobsize >= 128 ? 8 : 4;
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+
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if (ecc->strength >= 8) {
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/* 8 bit ECC defaults to BCH ECC on all platforms */
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host->bch_enabled = true;
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--
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2.17.1
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