[MTD] Skip bad blocks when checking for RedBoot partition table (3c441baa) · Commits · e / devices / android_kernel_samsung_exynos9810

drivers/mtd/redboot.c

+20 −5

Original line number	Diff line number	Diff line
		@@ -59,16 +59,31 @@ static int parse_redboot_partitions(struct mtd_info *master,
		static char nullstring[] = "unallocated";
		#endif

		if ( directory < 0 ) {
		offset = master->size + directory * master->erasesize;
		while (master->block_isbad &&
		master->block_isbad(master, offset)) {
		if (!offset) {
		nogood:
		printk(KERN_NOTICE "Failed to find a non-bad block to check for RedBoot partition table\n");
		return -EIO;
		}
		offset -= master->erasesize;
		}
		} else {
		offset = directory * master->erasesize;
		while (master->block_isbad &&
		master->block_isbad(master, offset)) {
		offset += master->erasesize;
		if (offset == master->size)
		goto nogood;
		}
		}
		buf = vmalloc(master->erasesize);

		if (!buf)
		return -ENOMEM;

		if ( directory < 0 )
		offset = master->size + directory*master->erasesize;
		else
		offset = directory*master->erasesize;

		printk(KERN_NOTICE "Searching for RedBoot partition table in %s at offset 0x%lx\n",
		master->name, offset);