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From: Chunhe Lan <Chunhe.Lan@freescale.com>
To: <linux-mtd@lists.infradead.org>
Cc: kumar.gala@freescale.com, linuxppc-dev@ozlabs.org,
	scottwood@freescale.com, akpm@linux-foundation.org,
	dwmw2@infradead.org, Chunhe Lan <Chunhe.Lan@freescale.com>
Subject: [PATCH] mtd/nand: Don't add disabled nand flash devices
Date: Tue, 16 Aug 2011 17:27:35 +0800	[thread overview]
Message-ID: <1313486855-15233-1-git-send-email-Chunhe.Lan@freescale.com> (raw)

Nand flash nodes with the property status="disabled" are not
usable and so avoid adding "disabled" nand flash devices with
the system.

Signed-off-by: Chunhe Lan <Chunhe.Lan@freescale.com>
---
 drivers/mtd/nand/fsl_elbc_nand.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/drivers/mtd/nand/fsl_elbc_nand.c b/drivers/mtd/nand/fsl_elbc_nand.c
index 33d8aad..8212c12 100644
--- a/drivers/mtd/nand/fsl_elbc_nand.c
+++ b/drivers/mtd/nand/fsl_elbc_nand.c
@@ -1,6 +1,6 @@
 /* Freescale Enhanced Local Bus Controller NAND driver
  *
- * Copyright © 2006-2007, 2010 Freescale Semiconductor
+ * Copyright © 2006-2007, 2010-2011 Freescale Semiconductor
  *
  * Authors: Nick Spence <nick.spence@freescale.com>,
  *          Scott Wood <scottwood@freescale.com>
@@ -849,6 +849,9 @@ static int __devinit fsl_elbc_nand_probe(struct platform_device *pdev)
 	struct device *dev;
 	struct device_node *node = pdev->dev.of_node;
 
+	if (!of_device_is_available(node))
+		return -ENODEV;
+
 	if (!fsl_lbc_ctrl_dev || !fsl_lbc_ctrl_dev->regs)
 		return -ENODEV;
 	lbc = fsl_lbc_ctrl_dev->regs;
-- 
1.5.6.5

             reply	other threads:[~2011-08-16  9:25 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-08-16  9:27 Chunhe Lan [this message]
2011-08-16 21:46 ` [PATCH] mtd/nand: Don't add disabled nand flash devices Scott Wood
2011-08-22 10:04   ` Lan Chunhe

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