From: Thomas Gleixner <tglx@cruncher.tec.linutronix.de>
Date: Thu, 25 May 2006 07:57:31 +0000 (+0200)
Subject: [MTD] Add ECC statistics to struct mtd_info
X-Git-Tag: MMI-PSA29.97-13-9~49475^2~46
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=7fac464868ec5d80019fa549b8b4516dd1dc9d5c;p=GitHub%2FMotorolaMobilityLLC%2Fkernel-slsi.git

[MTD] Add ECC statistics to struct mtd_info

FLASH - especially NAND FLASH - will become less reliable
and bit flips more likely. Add an ECC statistics struct
to struct mtd_info to keep track of this.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h
index b8ad634391db..41a984dcb139 100644
--- a/include/linux/mtd/mtd.h
+++ b/include/linux/mtd/mtd.h
@@ -56,6 +56,17 @@ struct mtd_erase_region_info {
 	u_int32_t numblocks;		/* Number of blocks of erasesize in this region */
 };
 
+/**
+ * struct mtd_ecc_stats - error correction status
+ *
+ * @corrected:	number of corrected bits
+ * @failed:	number of uncorrectable errors
+ */
+struct mtd_ecc_stats {
+	unsigned long corrected;
+	unsigned long failed;
+};
+
 struct mtd_info {
 	u_char type;
 	u_int32_t flags;
@@ -153,6 +164,9 @@ struct mtd_info {
 
 	struct notifier_block reboot_notifier;  /* default mode before reboot */
 
+	/* ECC status information */
+	struct mtd_ecc_stats ecc_stats;
+
 	void *priv;
 
 	struct module *owner;