Merge tag 'md-3.5-fixes' of git://neil.brown.name/md

[firefly-linux-kernel-4.4.55.git] / include / linux / mtd / mtd.h

diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h
index cf5ea8cdcf8e3a9a325da9a6f28f6fb120ea1319..63dadc0dfb629a74f6e578a16255ffc4cdb4d56a 100644 (file)
--- a/include/linux/mtd/mtd.h
+++ b/include/linux/mtd/mtd.h
@@ -157,6 +157,15 @@ struct mtd_info {
        unsigned int erasesize_mask;
        unsigned int writesize_mask;
 
+       /*
+        * read ops return -EUCLEAN if max number of bitflips corrected on any
+        * one region comprising an ecc step equals or exceeds this value.
+        * Settable by driver, else defaults to ecc_strength.  User can override
+        * in sysfs.  N.B. The meaning of the -EUCLEAN return code has changed;
+        * see Documentation/ABI/testing/sysfs-class-mtd for more detail.
+        */
+       unsigned int bitflip_threshold;
+
        // Kernel-only stuff starts here.
        const char *name;
        int index;
@@ -164,7 +173,7 @@ struct mtd_info {
        /* ECC layout structure pointer - read only! */
        struct nand_ecclayout *ecclayout;
 
-       /* max number of correctible bit errors per writesize */
+       /* max number of correctible bit errors per ecc step */
        unsigned int ecc_strength;
 
        /* Data for variable erase regions. If numeraseregions is zero,