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From: "Eric Bénard" <eric@eukrea.com>
To: barebox@lists.infradead.org
Subject: [PATCH] nand_base: fix to test for JCPV problem
Date: Wed,  8 May 2013 18:20:50 +0200	[thread overview]
Message-ID: <1368030050-7989-1-git-send-email-eric@eukrea.com> (raw)

Signed-off-by: Eric Bénard <eric@eukrea.com>
---
 drivers/mtd/nand/nand_base.c | 20 +++++---------------
 1 file changed, 5 insertions(+), 15 deletions(-)

diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index e8103cf..d04e24b 100644
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -1167,10 +1167,9 @@ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd,
 
 	chip->cmdfunc(mtd, NAND_CMD_READID, 0x00, -1);
 
-	/* Read manufacturer and device IDs */
-
-	id_data[0] = chip->read_byte(mtd);
-	id_data[1] = chip->read_byte(mtd);
+	/* Read entire ID string */
+	for (i = 0; i < 8; i++)
+		id_data[i] = chip->read_byte(mtd);
 
 	if (id_data[0] != *maf_id || id_data[1] != dev_id) {
 		pr_err("%s: second ID read did not match "
@@ -1190,20 +1189,11 @@ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd,
 	if (!type->name || !type->pagesize) {
 		/* Check is chip is ONFI compliant */
 		ret = nand_flash_detect_onfi(mtd, chip, &busw);
-		if (ret)
 			goto ident_done;
-		else {
-			pr_err("NAND type unknown: %02x,%02x\n", *maf_id, dev_id);
-			return ERR_PTR(-ENODEV);
-		}
 	}
 
-	chip->cmdfunc(mtd, NAND_CMD_READID, 0x00, -1);
-
-	/* Read entire ID string */
-
-	for (i = 0; i < 8; i++)
-		id_data[i] = chip->read_byte(mtd);
+	if (!type->name)
+		return ERR_PTR(-ENODEV);
 
 	if (!mtd->name)
 		mtd->name = type->name;
-- 
1.8.1.4


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             reply	other threads:[~2013-05-08 16:21 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-05-08 16:20 Eric Bénard [this message]
2013-05-08 16:41 ` [PATCH] nand_base: fix to test for JCPV problem Jean-Christophe PLAGNIOL-VILLARD
2013-05-08 17:05   ` Eric Bénard

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