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* [U-Boot] [PATCH V3 08/11] mtd: nand: supress 'unknown NAND' warning if no nand is found
@ 2010-09-08 12:53 Steve Sakoman
  2010-09-08 16:12 ` Scott Wood
  0 siblings, 1 reply; 3+ messages in thread
From: Steve Sakoman @ 2010-09-08 12:53 UTC (permalink / raw)
  To: u-boot

This printk was added recently and results in ugly output on systems
with no NAND:

NAND:  nand_get_flash_type: unknown NAND device: Manufacturer ID: 0x00, Chip ID: 0x00 0 MiB

instead of:

NAND:  0 MiB

Signed-off-by: Steve Sakoman <steve@sakoman.com>
---
 drivers/mtd/nand/nand_base.c |    9 ++++++---
 1 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index ed1c9c9..7d17846 100644
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -2653,9 +2653,12 @@ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd,
 	}
 
 	if (!type) {
-		printk(KERN_INFO "%s: unknown NAND device: Manufacturer ID:"
-		       " 0x%02x, Chip ID: 0x%02x\n", __func__,
-		       *maf_id, dev_id);
+		/* supress warning if there is no nand */
+		if (*maf_id != 0x00 && *maf_id != 0xff &&
+		    dev_id  != 0x00 && dev_id  != 0xff)
+			printk(KERN_INFO "%s: unknown NAND device: "
+				"Manufacturer ID: 0x%02x, Chip ID: 0x%02x\n",
+				__func__, *maf_id, dev_id);
 		return ERR_PTR(-ENODEV);
 	}
 
-- 
1.7.0.4

^ permalink raw reply related	[flat|nested] 3+ messages in thread

end of thread, other threads:[~2010-09-08 16:32 UTC | newest]

Thread overview: 3+ messages (download: mbox.gz follow: Atom feed
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2010-09-08 12:53 [U-Boot] [PATCH V3 08/11] mtd: nand: supress 'unknown NAND' warning if no nand is found Steve Sakoman
2010-09-08 16:12 ` Scott Wood
2010-09-08 16:32   ` Paulraj, Sandeep

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