114 	int err = 0;  in rewrite_page()  local
129 	err = mtd_write_oob(mtd, offset, &ops);  in rewrite_page()
130 	if (err || ops.retlen != mtd->writesize) {  in rewrite_page()
131 		pr_err("error: write_oob failed (%d)\n", err);  in rewrite_page()
132 		if (!err)  in rewrite_page()
133 			err = -EIO;  in rewrite_page()
136 	return err;  in rewrite_page()
143 	int err = 0;  in read_page()  local
153 	err = mtd_read(mtd, offset, mtd->writesize, &read, rbuffer);  in read_page()
154 	if (err == -EUCLEAN)  in read_page()
155 		err = mtd->ecc_stats.corrected - oldstats.corrected;  in read_page()
157 	if (err < 0 || read != mtd->writesize) {  in read_page()
159 		if (err >= 0)  in read_page()
160 			err = -EIO;  in read_page()
163 	return err;  in read_page()
215 	int err = 0;  in incremental_errors_test()  local
224 	err = write_page(1);  in incremental_errors_test()
225 	if (err)  in incremental_errors_test()
230 		err = rewrite_page(1);  in incremental_errors_test()
231 		if (err)  in incremental_errors_test()
234 		err = read_page(1);  in incremental_errors_test()
235 		if (err > 0)  in incremental_errors_test()
236 			pr_info("Read reported %d corrected bit errors\n", err);  in incremental_errors_test()
237 		if (err < 0) {  in incremental_errors_test()
239 				errs_per_subpage, err);  in incremental_errors_test()
240 			err = 0;  in incremental_errors_test()
244 		err = verify_page(1);  in incremental_errors_test()
245 		if (err) {  in incremental_errors_test()
254 			err = insert_biterror(i * subsize);  in incremental_errors_test()
255 			if (err < 0)  in incremental_errors_test()
262 	return err;  in incremental_errors_test()
271 	int err = 0;  in overwrite_test()  local
287 	err = write_page(1);  in overwrite_test()
288 	if (err)  in overwrite_test()
293 		err = rewrite_page(0);  in overwrite_test()
294 		if (err)  in overwrite_test()
297 		err = read_page(0);  in overwrite_test()
298 		if (err >= 0) {  in overwrite_test()
299 			if (err >= MAXBITS) {  in overwrite_test()
301 				err = -EIO;  in overwrite_test()
304 			bitstats[err]++;  in overwrite_test()
305 			if (err > max_corrected) {  in overwrite_test()
306 				max_corrected = err;  in overwrite_test()
308 					err);  in overwrite_test()
311 			pr_info("Read reported error %d\n", err);  in overwrite_test()
312 			err = 0;  in overwrite_test()
316 		err = verify_page(0);  in overwrite_test()
317 		if (err) {  in overwrite_test()
323 		err = mtdtest_relax();  in overwrite_test()
324 		if (err)  in overwrite_test()
338 	return err;  in overwrite_test()
343 	int err = 0;  in mtd_nandbiterrs_init()  local
351 		err = PTR_ERR(mtd);  in mtd_nandbiterrs_init()
358 		err = -ENODEV;  in mtd_nandbiterrs_init()
379 		err = -ENOMEM;  in mtd_nandbiterrs_init()
385 		err = -ENOMEM;  in mtd_nandbiterrs_init()
389 	err = mtdtest_erase_eraseblock(mtd, eraseblock);  in mtd_nandbiterrs_init()
390 	if (err)  in mtd_nandbiterrs_init()
394 		err = incremental_errors_test();  in mtd_nandbiterrs_init()
396 		err = overwrite_test();  in mtd_nandbiterrs_init()
398 	if (err)  in mtd_nandbiterrs_init()
402 	err = mtdtest_erase_eraseblock(mtd, eraseblock);  in mtd_nandbiterrs_init()
403 	if (err)  in mtd_nandbiterrs_init()
406 	err = -EIO;  in mtd_nandbiterrs_init()
419 	return err;  in mtd_nandbiterrs_init()