Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 3c661ddb authored by Nikhilesh Reddy's avatar Nikhilesh Reddy Committed by Gerrit - the friendly Code Review server
Browse files

mtd:pagetest: Add neighbour erase test case 



Add test to check that neighbouring blocks are not affected
when erasing current block

Change-Id: I6d3378e6d32d692986d5f6cbc3fd9958ca773570
Signed-off-by: default avatarNikhilesh Reddy <reddyn@codeaurora.org>
parent 92317fb0

drivers/mtd/tests/pagetest.c

+102 −2
Original line number Diff line number Diff line
@@ -239,7 +239,7 @@ static int erasecrosstest(void) 
	if (memcmp(writebuf, readbuf, pgsize)) {

		pr_err("verify failed!\n");

		errcnt += 1;

		return -1;

		return -EIO;

	}



	pr_info("erasing block %d\n", ebnum);
@@ -269,7 +269,7 @@ static int erasecrosstest(void) 
	if (memcmp(writebuf, readbuf, pgsize)) {

		pr_err("verify failed!\n");

		errcnt += 1;

		return -1;

		return -EIO;

	}



	if (!err)
@@ -329,6 +329,102 @@ static int erasetest(void) 
	return err;

}



static int erase_neighbor_check(int ebnum, int ebnum2, loff_t addr0)

{

	int err = 0;

	char *readbuf = twopages;



	pr_info("erasing block %d\n", ebnum);

	err = mtdtest_erase_eraseblock(mtd, ebnum);

	if (err)

		return err;



	pr_info("writing 1st page of block %d\n", ebnum);

	prandom_bytes_state(&rnd_state, writebuf, pgsize);

	strlcpy(writebuf, "There is no data like this!", mtd->erasesize);

	err = mtdtest_write(mtd, addr0, pgsize, writebuf);

	if (err)

		return err;



	pr_info("reading 1st page of block %d\n", ebnum);

	memset(readbuf, 0, pgsize);

	err = mtdtest_read(mtd, addr0, pgsize, readbuf);

	if (err)

		return err;



	pr_info("verifying 1st page of block %d\n", ebnum);

	if (memcmp(writebuf, readbuf, pgsize)) {

		pr_err("verify failed!\n");

		errcnt += 1;

		return -EIO;

	}



	pr_info("erasing block %d\n", ebnum);

	err = mtdtest_erase_eraseblock(mtd, ebnum);

	if (err)

		return err;



	pr_info("writing 1st page of block %d\n", ebnum);

	prandom_bytes_state(&rnd_state, writebuf, pgsize);

	strlcpy(writebuf, "There is no data like this!", mtd->erasesize);

	err = mtdtest_write(mtd, addr0, pgsize, writebuf);

	if (err)

		return err;



	pr_info("erasing block %d\n", ebnum2);

	err = mtdtest_erase_eraseblock(mtd, ebnum2);

	if (err)

		return err;



	pr_info("reading 1st page of block %d\n", ebnum);

	memset(readbuf, 0, pgsize);

	err = mtdtest_read(mtd, addr0, pgsize, readbuf);

	if (err)

		return err;



	pr_info("verifying 1st page of block %d\n", ebnum);

	if (memcmp(writebuf, readbuf, pgsize)) {

		pr_err("verify failed!\n");

		errcnt += 1;

		return -EIO;

	}

	pr_info("verified block %d and block %d\n", ebnum, ebnum2);

	return 0;

}



static int erase_neighbour_test(void)

{

	int err = 0, ebnum;

	loff_t addr0;



	pr_info("erase_neighbour_test\n");



	addr0 = 0;

	for (ebnum = 0; ebnum < ebcnt; ++ebnum, addr0 += mtd->erasesize) {

		/* Skip if current block is bad */

		if (bbt[ebnum])

			continue;



		/* Verify previous and current block if prev block is good */

		if (ebnum > 1 && !bbt[ebnum - 1])

			err = erase_neighbor_check(ebnum, ebnum - 1, addr0);

		if (err)

			return err;



		/* Verify next and current block if next block is good */

		if (ebnum < ebcnt - 1 && !bbt[ebnum + 1])

			err = erase_neighbor_check(ebnum, ebnum + 1, addr0);

		if (err)

			return err;

	}





	if (!err)

		pr_info("erase_neighbour_test ok\n");

	return err;

}





static int __init mtd_pagetest_init(void)

{

	int err = 0;
@@ -438,6 +534,10 @@ static int __init mtd_pagetest_init(void) 
	if (err)

		goto out;



	err = erase_neighbour_test();

	if (err)

		goto out;



	pr_info("finished with %d errors\n", errcnt);

out: