From: Adrian Hunter <hunter.programmer@gmail.com>
Date: Wed, 10 Jan 2007 05:51:26 +0000 (+0200)
Subject: [MTD] OneNAND: Return an error if a read timeout occurs
X-Git-Tag: v2.6.21-rc1~66^2~27^2~14
X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=9d03280129e84f8cdfd83f84803a4548e3bf697d;p=linux-2.6-omap-h63xx.git

[MTD] OneNAND: Return an error if a read timeout occurs

If OneNAND is operating within specification, all operations should easily be
completed within the 20 millisecond timeout.
This patch faithlessly adds a check for the timeout and returns an error in
that case.

Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
---

diff --git a/drivers/mtd/onenand/onenand_base.c b/drivers/mtd/onenand/onenand_base.c
index d0f31183d58..ce1cbdcd355 100644
--- a/drivers/mtd/onenand/onenand_base.c
+++ b/drivers/mtd/onenand/onenand_base.c
@@ -333,6 +333,9 @@ static int onenand_wait(struct mtd_info *mtd, int state)
 			} else if (ecc & ONENAND_ECC_1BIT_ALL)
 				mtd->ecc_stats.corrected++;
 		}
+	} else if (state == FL_READING) {
+		printk(KERN_ERR "onenand_wait: read timeout! ctrl=0x%04x intr=0x%04x\n", ctrl, interrupt);
+		return -EIO;
 	}
 
 	return 0;