--- ./nandtest.c.bad	2011-08-19 15:34:03 +0200
+++ ./nandtest.c	2012-02-19 11:08:43 +0100
@@ -22,6 +22,7 @@
 	fprintf(stderr, "usage: %s [OPTIONS] <device>\n\n"
 		"  -h, --help           Display this help output\n"
 		"  -m, --markbad        Mark blocks bad if they appear so\n"
+		"  -M, --markeccbad     Mark ECC corrected/failed blocks bad\n"
 		"  -s, --seed           Supply random seed\n"
 		"  -p, --passes         Number of passes\n"
 		"  -o, --offset         Start offset on flash\n"
@@ -35,6 +36,7 @@
 struct mtd_ecc_stats oldstats, newstats;
 int fd;
 int markbad=0;
+int markeccbad=0;
 int seed;
 
 int erase_and_write(loff_t ofs, unsigned char *data, unsigned char *rbuf)
@@ -100,10 +102,18 @@
 	if (newstats.corrected > oldstats.corrected) {
 		printf("\nECC corrected at %08x\n", (unsigned) ofs);
 		oldstats.corrected = newstats.corrected;
+		if (markeccbad) {
+			printf("Mark block bad at %08lx\n", (long)ofs);
+			ioctl(fd, MEMSETBADBLOCK, &ofs);
+		}
 	}
 	if (newstats.failed > oldstats.failed) {
 		printf("\nECC failed at %08x\n", (unsigned) ofs);
 		oldstats.corrected = newstats.corrected;
+		if (markeccbad) {
+			printf("Mark block bad at %08lx\n", (long)ofs);
+			ioctl(fd, MEMSETBADBLOCK, &ofs);
+		}
 	}
 	if (len < meminfo.erasesize)
 		exit(1);
@@ -139,10 +149,11 @@
 	uint32_t length = -1;
 
 	for (;;) {
-		static const char *short_options="hkl:mo:p:s:";
+		static const char *short_options="hkl:mMo:p:s:";
 		static const struct option long_options[] = {
 			{ "help", no_argument, 0, 'h' },
 			{ "markbad", no_argument, 0, 'm' },
+			{ "markeccbad", no_argument, 0, 'M' },
 			{ "seed", required_argument, 0, 's' },
 			{ "passes", required_argument, 0, 'p' },
 			{ "offset", required_argument, 0, 'o' },
@@ -165,6 +176,10 @@
 			markbad = 1;
 			break;
 
+		case 'M':
+			markeccbad = 1;
+			break;
+
 		case 'k':
 			keep_contents = 1;
 			break;