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From: Romain Izard <romain.izard.pro-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
To: linux-mtd-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
	devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Cc: Josh Wu <josh.wu-AIFe0yeh4nAAvxtiuMwx3w@public.gmane.org>,
	Nicolas Ferre
	<nicolas.ferre-AIFe0yeh4nAAvxtiuMwx3w@public.gmane.org>,
	Romain Izard
	<romain.izard.pro-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Subject: [RFC PATCH 1/4] mtd: atmel_nand: Do not warn on bitflips
Date: Tue, 12 Jan 2016 15:33:40 +0100	[thread overview]
Message-ID: <1452609223-14790-2-git-send-email-romain.izard.pro@gmail.com> (raw)
In-Reply-To: <1452609223-14790-1-git-send-email-romain.izard.pro-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>

When using multi-bit ECC, it is normal for the NAND Flash driver to
correct bit errors during the life of the product. Those errors will
only be cleared once a threshold has been reached, and corrections can
occur regularly before this.

Use only dev_dbg and not dev_info to report the bitflips, to keep the
system log clean when everything works correctly.

Signed-off-by: Romain Izard <romain.izard.pro-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
---
 drivers/mtd/nand/atmel_nand.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/mtd/nand/atmel_nand.c b/drivers/mtd/nand/atmel_nand.c
index 46010bd895b1..9d71f9e6a8de 100644
--- a/drivers/mtd/nand/atmel_nand.c
+++ b/drivers/mtd/nand/atmel_nand.c
@@ -824,7 +824,7 @@ static void pmecc_correct_data(struct mtd_info *mtd, uint8_t *buf, uint8_t *ecc,
 			*(buf + byte_pos) ^= (1 << bit_pos);
 
 			pos = sector_num * host->pmecc_sector_size + byte_pos;
-			dev_info(host->dev, "Bit flip in data area, byte_pos: %d, bit_pos: %d, 0x%02x -> 0x%02x\n",
+			dev_dbg(host->dev, "Bit flip in data area, byte_pos: %d, bit_pos: %d, 0x%02x -> 0x%02x\n",
 				pos, bit_pos, err_byte, *(buf + byte_pos));
 		} else {
 			/* Bit flip in OOB area */
@@ -834,7 +834,7 @@ static void pmecc_correct_data(struct mtd_info *mtd, uint8_t *buf, uint8_t *ecc,
 			ecc[tmp] ^= (1 << bit_pos);
 
 			pos = tmp + nand_chip->ecc.layout->eccpos[0];
-			dev_info(host->dev, "Bit flip in OOB, oob_byte_pos: %d, bit_pos: %d, 0x%02x -> 0x%02x\n",
+			dev_dbg(host->dev, "Bit flip in OOB, oob_byte_pos: %d, bit_pos: %d, 0x%02x -> 0x%02x\n",
 				pos, bit_pos, err_byte, ecc[tmp]);
 		}
 
-- 
2.5.0

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  parent reply	other threads:[~2016-01-12 14:33 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-01-12 14:33 [RFC PATCH 0/4] mtd: atmel_nand: Add support for NAND Flash on SAMA5D2 Romain Izard
     [not found] ` <1452609223-14790-1-git-send-email-romain.izard.pro-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2016-01-12 14:33   ` Romain Izard [this message]
2016-01-13  5:12     ` [RFC PATCH 1/4] mtd: atmel_nand: Do not warn on bitflips Yang, Wenyou
2016-01-13  5:14     ` Yang, Wenyou
2016-01-12 14:33   ` [RFC PATCH 2/4] mtd: atmel_nand: Support variable RB_EDGE interrupts Romain Izard
     [not found]     ` <1452609223-14790-3-git-send-email-romain.izard.pro-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2016-01-13  6:14       ` Yang, Wenyou
2016-01-17  3:58       ` Rob Herring
2016-01-12 14:33   ` [RFC PATCH 3/4] mtd: atmel_nand: Support 32-bit ECC strength Romain Izard
     [not found]     ` <1452609223-14790-4-git-send-email-romain.izard.pro-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2016-01-13  6:12       ` Yang, Wenyou
2016-01-12 14:33   ` [RFC PATCH 4/4] ARM: at91/dt: sama5d2: add nand0 and nfc0 nodes Romain Izard
     [not found]     ` <1452609223-14790-5-git-send-email-romain.izard.pro-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2016-01-13  6:06       ` Yang, Wenyou
2016-01-13  9:41         ` romain izard
     [not found]           ` <CAGkQfmN3Ko0Pbyued0AGMPskqVUWStxO44Nj=k8O-+iWYObXMg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-01-13 11:33             ` Yang, Wenyou
2016-01-13 12:39           ` Yang, Wenyou
2016-01-13 14:51             ` Nicolas Ferre
2016-01-12 15:45   ` [RFC PATCH 0/4] mtd: atmel_nand: Add support for NAND Flash on SAMA5D2 Nicolas Ferre
     [not found]     ` <56951F91.1090101-AIFe0yeh4nAAvxtiuMwx3w@public.gmane.org>
2016-01-12 16:55       ` Romain Izard
     [not found]         ` <CAGkQfmOmgiKwziQ+HuJTN1Qk1aHEXBWYcE1LT+XT2d-Xv7kxNw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-01-13 11:46           ` Nicolas Ferre
     [not found]             ` <56963918.7040809-AIFe0yeh4nAAvxtiuMwx3w@public.gmane.org>
2016-01-13 12:56               ` Romain Izard
     [not found]                 ` <CAGkQfmNDZmKDJYMuVizbb-+3nXX2DAqDCOf8qE0DNR-3Y2Etcg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-01-13 14:40                   ` Nicolas Ferre

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