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Commit 4582a30c authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge git://git.infradead.org/ubi-2.6 

* git://git.infradead.org/ubi-2.6:
  UBI: add write checking
  UBI: simplify debugging return codes
  UBI: fix attaching error path
  UBI: support attaching by MTD character device name
  UBI: mark few variables as __initdata
parents 9cc0cb3c 6e9065d7

drivers/mtd/ubi/build.c

+87 −46
Original line number Diff line number Diff line
@@ -37,6 +37,7 @@ 
#include <linux/module.h>

#include <linux/moduleparam.h>

#include <linux/stringify.h>

#include <linux/namei.h>

#include <linux/stat.h>

#include <linux/miscdevice.h>

#include <linux/log2.h>
@@ -50,7 +51,8 @@ 


/**

 * struct mtd_dev_param - MTD device parameter description data structure.

 * @name: MTD device name or number string

 * @name: MTD character device node path, MTD device name, or MTD device number

 *        string

 * @vid_hdr_offs: VID header offset

 */

struct mtd_dev_param {
@@ -59,10 +61,10 @@ struct mtd_dev_param { 
};



/* Numbers of elements set in the @mtd_dev_param array */

static int mtd_devs;

static int __initdata mtd_devs;



/* MTD devices specification parameters */

static struct mtd_dev_param mtd_dev_param[UBI_MAX_DEVICES];

static struct mtd_dev_param __initdata mtd_dev_param[UBI_MAX_DEVICES];



/* Root UBI "class" object (corresponds to '/<sysfs>/class/ubi/') */

struct class *ubi_class;
@@ -363,11 +365,13 @@ static void dev_release(struct device *dev) 
/**

 * ubi_sysfs_init - initialize sysfs for an UBI device.

 * @ubi: UBI device description object

 * @ref: set to %1 on exit in case of failure if a reference to @ubi->dev was

 *       taken

 *

 * This function returns zero in case of success and a negative error code in

 * case of failure.

 */

static int ubi_sysfs_init(struct ubi_device *ubi)

static int ubi_sysfs_init(struct ubi_device *ubi, int *ref)

{

	int err;
@@ -379,6 +383,7 @@ static int ubi_sysfs_init(struct ubi_device *ubi) 
	if (err)

		return err;



	*ref = 1;

	err = device_create_file(&ubi->dev, &dev_eraseblock_size);

	if (err)

		return err;
@@ -434,7 +439,7 @@ static void ubi_sysfs_close(struct ubi_device *ubi) 
}



/**

 * kill_volumes - destroy all volumes.

 * kill_volumes - destroy all user volumes.

 * @ubi: UBI device description object

 */

static void kill_volumes(struct ubi_device *ubi)
@@ -446,37 +451,30 @@ static void kill_volumes(struct ubi_device *ubi) 
			ubi_free_volume(ubi, ubi->volumes[i]);

}



/**

 * free_user_volumes - free all user volumes.

 * @ubi: UBI device description object

 *

 * Normally the volumes are freed at the release function of the volume device

 * objects. However, on error paths the volumes have to be freed before the

 * device objects have been initialized.

 */

static void free_user_volumes(struct ubi_device *ubi)

{

	int i;



	for (i = 0; i < ubi->vtbl_slots; i++)

		if (ubi->volumes[i]) {

			kfree(ubi->volumes[i]->eba_tbl);

			kfree(ubi->volumes[i]);

		}

}



/**

 * uif_init - initialize user interfaces for an UBI device.

 * @ubi: UBI device description object

 * @ref: set to %1 on exit in case of failure if a reference to @ubi->dev was

 *       taken, otherwise set to %0

 *

 * This function initializes various user interfaces for an UBI device. If the

 * initialization fails at an early stage, this function frees all the

 * resources it allocated, returns an error, and @ref is set to %0. However,

 * if the initialization fails after the UBI device was registered in the

 * driver core subsystem, this function takes a reference to @ubi->dev, because

 * otherwise the release function ('dev_release()') would free whole @ubi

 * object. The @ref argument is set to %1 in this case. The caller has to put

 * this reference.

 *

 * This function returns zero in case of success and a negative error code in

 * case of failure. Note, this function destroys all volumes if it fails.

 * case of failure.

 */

static int uif_init(struct ubi_device *ubi)

static int uif_init(struct ubi_device *ubi, int *ref)

{

	int i, err;

	dev_t dev;



	*ref = 0;

	sprintf(ubi->ubi_name, UBI_NAME_STR "%d", ubi->ubi_num);



	/*
@@ -504,7 +502,7 @@ static int uif_init(struct ubi_device *ubi) 
		goto out_unreg;

	}



	err = ubi_sysfs_init(ubi);

	err = ubi_sysfs_init(ubi, ref);

	if (err)

		goto out_sysfs;
@@ -522,6 +520,8 @@ static int uif_init(struct ubi_device *ubi) 
out_volumes:

	kill_volumes(ubi);

out_sysfs:

	if (*ref)

		get_device(&ubi->dev);

	ubi_sysfs_close(ubi);

	cdev_del(&ubi->cdev);

out_unreg:
@@ -875,7 +875,7 @@ static int ubi_reboot_notifier(struct notifier_block *n, unsigned long state, 
int ubi_attach_mtd_dev(struct mtd_info *mtd, int ubi_num, int vid_hdr_offset)

{

	struct ubi_device *ubi;

	int i, err, do_free = 1;

	int i, err, ref = 0;



	/*

	 * Check if we already have the same MTD device attached.
@@ -975,9 +975,9 @@ int ubi_attach_mtd_dev(struct mtd_info *mtd, int ubi_num, int vid_hdr_offset) 
			goto out_detach;

	}



	err = uif_init(ubi);

	err = uif_init(ubi, &ref);

	if (err)

		goto out_nofree;

		goto out_detach;



	ubi->bgt_thread = kthread_create(ubi_thread, ubi, ubi->bgt_name);

	if (IS_ERR(ubi->bgt_thread)) {
@@ -1025,12 +1025,8 @@ int ubi_attach_mtd_dev(struct mtd_info *mtd, int ubi_num, int vid_hdr_offset) 


out_uif:

	uif_close(ubi);

out_nofree:

	do_free = 0;

out_detach:

	ubi_wl_close(ubi);

	if (do_free)

		free_user_volumes(ubi);

	free_internal_volumes(ubi);

	vfree(ubi->vtbl);

out_free:
@@ -1039,6 +1035,9 @@ out_free: 
#ifdef CONFIG_MTD_UBI_DEBUG_PARANOID

	vfree(ubi->dbg_peb_buf);

#endif

	if (ref)

		put_device(&ubi->dev);

	else

		kfree(ubi);

	return err;

}
@@ -1096,7 +1095,7 @@ int ubi_detach_mtd_dev(int ubi_num, int anyway) 


	/*

	 * Get a reference to the device in order to prevent 'dev_release()'

	 * from freeing @ubi object.

	 * from freeing the @ubi object.

	 */

	get_device(&ubi->dev);
@@ -1116,13 +1115,50 @@ int ubi_detach_mtd_dev(int ubi_num, int anyway) 
}



/**

 * find_mtd_device - open an MTD device by its name or number.

 * @mtd_dev: name or number of the device

 * open_mtd_by_chdev - open an MTD device by its character device node path.

 * @mtd_dev: MTD character device node path

 *

 * This helper function opens an MTD device by its character node device path.

 * Returns MTD device description object in case of success and a negative

 * error code in case of failure.

 */

static struct mtd_info * __init open_mtd_by_chdev(const char *mtd_dev)

{

	int err, major, minor, mode;

	struct path path;



	/* Probably this is an MTD character device node path */

	err = kern_path(mtd_dev, LOOKUP_FOLLOW, &path);

	if (err)

		return ERR_PTR(err);



	/* MTD device number is defined by the major / minor numbers */

	major = imajor(path.dentry->d_inode);

	minor = iminor(path.dentry->d_inode);

	mode = path.dentry->d_inode->i_mode;

	path_put(&path);

	if (major != MTD_CHAR_MAJOR || !S_ISCHR(mode))

		return ERR_PTR(-EINVAL);



	if (minor & 1)

		/*

		 * Just do not think the "/dev/mtdrX" devices support is need,

		 * so do not support them to avoid doing extra work.

		 */

		return ERR_PTR(-EINVAL);



	return get_mtd_device(NULL, minor / 2);

}



/**

 * open_mtd_device - open MTD device by name, character device path, or number.

 * @mtd_dev: name, character device node path, or MTD device device number

 *

 * This function tries to open and MTD device described by @mtd_dev string,

 * which is first treated as an ASCII number, and if it is not true, it is

 * treated as MTD device name. Returns MTD device description object in case of

 * success and a negative error code in case of failure.

 * which is first treated as ASCII MTD device number, and if it is not true, it

 * is treated as MTD device name, and if that is also not true, it is treated

 * as MTD character device node path. Returns MTD device description object in

 * case of success and a negative error code in case of failure.

 */

static struct mtd_info * __init open_mtd_device(const char *mtd_dev)

{
@@ -1137,6 +1173,9 @@ static struct mtd_info * __init open_mtd_device(const char *mtd_dev) 
		 * MTD device name.

		 */

		mtd = get_mtd_device_nm(mtd_dev);

		if (IS_ERR(mtd) && PTR_ERR(mtd) == -ENODEV)

			/* Probably this is an MTD character device node path */

			mtd = open_mtd_by_chdev(mtd_dev);

	} else

		mtd = get_mtd_device(NULL, mtd_num);
@@ -1352,13 +1391,15 @@ static int __init ubi_mtd_param_parse(const char *val, struct kernel_param *kp) 


module_param_call(mtd, ubi_mtd_param_parse, NULL, NULL, 000);

MODULE_PARM_DESC(mtd, "MTD devices to attach. Parameter format: "

		      "mtd=<name|num>[,<vid_hdr_offs>].\n"

		      "mtd=<name|num|path>[,<vid_hdr_offs>].\n"

		      "Multiple \"mtd\" parameters may be specified.\n"

		      "MTD devices may be specified by their number or name.\n"

		      "MTD devices may be specified by their number, name, or "

		      "path to the MTD character device node.\n"

		      "Optional \"vid_hdr_offs\" parameter specifies UBI VID "

		      "header position and data starting position to be used "

		      "by UBI.\n"

		      "Example: mtd=content,1984 mtd=4 - attach MTD device"

		      "header position to be used by UBI.\n"

		      "Example 1: mtd=/dev/mtd0 - attach MTD device "

		      "/dev/mtd0.\n"

		      "Example 2: mtd=content,1984 mtd=4 - attach MTD device "

		      "with name \"content\" using VID header offset 1984, and "

		      "MTD device number 4 with default VID header offset.");

drivers/mtd/ubi/debug.h

+4 −0
Original line number Diff line number Diff line
@@ -96,8 +96,11 @@ void ubi_dbg_dump_flash(struct ubi_device *ubi, int pnum, int offset, int len); 


#ifdef CONFIG_MTD_UBI_DEBUG_PARANOID

int ubi_dbg_check_all_ff(struct ubi_device *ubi, int pnum, int offset, int len);

int ubi_dbg_check_write(struct ubi_device *ubi, const void *buf, int pnum,

			int offset, int len);

#else

#define ubi_dbg_check_all_ff(ubi, pnum, offset, len) 0

#define ubi_dbg_check_write(ubi, buf, pnum, offset, len) 0

#endif



#ifdef CONFIG_MTD_UBI_DEBUG_DISABLE_BGT
@@ -176,6 +179,7 @@ static inline int ubi_dbg_is_erase_failure(void) 
#define ubi_dbg_is_write_failure() 0

#define ubi_dbg_is_erase_failure() 0

#define ubi_dbg_check_all_ff(ubi, pnum, offset, len) 0

#define ubi_dbg_check_write(ubi, buf, pnum, offset, len) 0



#endif /* !CONFIG_MTD_UBI_DEBUG */

#endif /* !__UBI_DEBUG_H__ */

drivers/mtd/ubi/io.c

+95 −25
Original line number Diff line number Diff line
@@ -143,7 +143,7 @@ int ubi_io_read(const struct ubi_device *ubi, void *buf, int pnum, int offset, 


	err = paranoid_check_not_bad(ubi, pnum);

	if (err)

		return err > 0 ? -EINVAL : err;

		return err;



	addr = (loff_t)pnum * ubi->peb_size + offset;

retry:
@@ -236,12 +236,12 @@ int ubi_io_write(struct ubi_device *ubi, const void *buf, int pnum, int offset, 


	err = paranoid_check_not_bad(ubi, pnum);

	if (err)

		return err > 0 ? -EINVAL : err;

		return err;



	/* The area we are writing to has to contain all 0xFF bytes */

	err = ubi_dbg_check_all_ff(ubi, pnum, offset, len);

	if (err)

		return err > 0 ? -EINVAL : err;

		return err;



	if (offset >= ubi->leb_start) {

		/*
@@ -250,10 +250,10 @@ int ubi_io_write(struct ubi_device *ubi, const void *buf, int pnum, int offset, 
		 */

		err = paranoid_check_peb_ec_hdr(ubi, pnum);

		if (err)

			return err > 0 ? -EINVAL : err;

			return err;

		err = paranoid_check_peb_vid_hdr(ubi, pnum);

		if (err)

			return err > 0 ? -EINVAL : err;

			return err;

	}



	if (ubi_dbg_is_write_failure()) {
@@ -273,6 +273,21 @@ int ubi_io_write(struct ubi_device *ubi, const void *buf, int pnum, int offset, 
	} else

		ubi_assert(written == len);



	if (!err) {

		err = ubi_dbg_check_write(ubi, buf, pnum, offset, len);

		if (err)

			return err;



		/*

		 * Since we always write sequentially, the rest of the PEB has

		 * to contain only 0xFF bytes.

		 */

		offset += len;

		len = ubi->peb_size - offset;

		if (len)

			err = ubi_dbg_check_all_ff(ubi, pnum, offset, len);

	}



	return err;

}
@@ -348,7 +363,7 @@ retry: 


	err = ubi_dbg_check_all_ff(ubi, pnum, 0, ubi->peb_size);

	if (err)

		return err > 0 ? -EINVAL : err;

		return err;



	if (ubi_dbg_is_erase_failure() && !err) {

		dbg_err("cannot erase PEB %d (emulated)", pnum);
@@ -542,7 +557,7 @@ int ubi_io_sync_erase(struct ubi_device *ubi, int pnum, int torture) 


	err = paranoid_check_not_bad(ubi, pnum);

	if (err != 0)

		return err > 0 ? -EINVAL : err;

		return err;



	if (ubi->ro_mode) {

		ubi_err("read-only mode");
@@ -819,7 +834,7 @@ int ubi_io_write_ec_hdr(struct ubi_device *ubi, int pnum, 


	err = paranoid_check_ec_hdr(ubi, pnum, ec_hdr);

	if (err)

		return -EINVAL;

		return err;



	err = ubi_io_write(ubi, ec_hdr, pnum, 0, ubi->ec_hdr_alsize);

	return err;
@@ -1083,7 +1098,7 @@ int ubi_io_write_vid_hdr(struct ubi_device *ubi, int pnum, 


	err = paranoid_check_peb_ec_hdr(ubi, pnum);

	if (err)

		return err > 0 ? -EINVAL : err;

		return err;



	vid_hdr->magic = cpu_to_be32(UBI_VID_HDR_MAGIC);

	vid_hdr->version = UBI_VERSION;
@@ -1092,7 +1107,7 @@ int ubi_io_write_vid_hdr(struct ubi_device *ubi, int pnum, 


	err = paranoid_check_vid_hdr(ubi, pnum, vid_hdr);

	if (err)

		return -EINVAL;

		return err;



	p = (char *)vid_hdr - ubi->vid_hdr_shift;

	err = ubi_io_write(ubi, p, pnum, ubi->vid_hdr_aloffset,
@@ -1107,8 +1122,8 @@ int ubi_io_write_vid_hdr(struct ubi_device *ubi, int pnum, 
 * @ubi: UBI device description object

 * @pnum: physical eraseblock number to check

 *

 * This function returns zero if the physical eraseblock is good, a positive

 * number if it is bad and a negative error code if an error occurred.

 * This function returns zero if the physical eraseblock is good, %-EINVAL if

 * it is bad and a negative error code if an error occurred.

 */

static int paranoid_check_not_bad(const struct ubi_device *ubi, int pnum)

{
@@ -1120,7 +1135,7 @@ static int paranoid_check_not_bad(const struct ubi_device *ubi, int pnum) 


	ubi_err("paranoid check failed for PEB %d", pnum);

	ubi_dbg_dump_stack();

	return err;

	return err > 0 ? -EINVAL : err;

}



/**
@@ -1130,7 +1145,7 @@ static int paranoid_check_not_bad(const struct ubi_device *ubi, int pnum) 
 * @ec_hdr: the erase counter header to check

 *

 * This function returns zero if the erase counter header contains valid

 * values, and %1 if not.

 * values, and %-EINVAL if not.

 */

static int paranoid_check_ec_hdr(const struct ubi_device *ubi, int pnum,

				 const struct ubi_ec_hdr *ec_hdr)
@@ -1156,7 +1171,7 @@ static int paranoid_check_ec_hdr(const struct ubi_device *ubi, int pnum, 
fail:

	ubi_dbg_dump_ec_hdr(ec_hdr);

	ubi_dbg_dump_stack();

	return 1;

	return -EINVAL;

}



/**
@@ -1164,8 +1179,8 @@ fail: 
 * @ubi: UBI device description object

 * @pnum: the physical eraseblock number to check

 *

 * This function returns zero if the erase counter header is all right, %1 if

 * not, and a negative error code if an error occurred.

 * This function returns zero if the erase counter header is all right and and

 * a negative error code if not or if an error occurred.

 */

static int paranoid_check_peb_ec_hdr(const struct ubi_device *ubi, int pnum)

{
@@ -1188,7 +1203,7 @@ static int paranoid_check_peb_ec_hdr(const struct ubi_device *ubi, int pnum) 
		ubi_err("paranoid check failed for PEB %d", pnum);

		ubi_dbg_dump_ec_hdr(ec_hdr);

		ubi_dbg_dump_stack();

		err = 1;

		err = -EINVAL;

		goto exit;

	}
@@ -1206,7 +1221,7 @@ exit: 
 * @vid_hdr: the volume identifier header to check

 *

 * This function returns zero if the volume identifier header is all right, and

 * %1 if not.

 * %-EINVAL if not.

 */

static int paranoid_check_vid_hdr(const struct ubi_device *ubi, int pnum,

				  const struct ubi_vid_hdr *vid_hdr)
@@ -1233,7 +1248,7 @@ fail: 
	ubi_err("paranoid check failed for PEB %d", pnum);

	ubi_dbg_dump_vid_hdr(vid_hdr);

	ubi_dbg_dump_stack();

	return 1;

	return -EINVAL;



}
@@ -1243,7 +1258,7 @@ fail: 
 * @pnum: the physical eraseblock number to check

 *

 * This function returns zero if the volume identifier header is all right,

 * %1 if not, and a negative error code if an error occurred.

 * and a negative error code if not or if an error occurred.

 */

static int paranoid_check_peb_vid_hdr(const struct ubi_device *ubi, int pnum)

{
@@ -1270,7 +1285,7 @@ static int paranoid_check_peb_vid_hdr(const struct ubi_device *ubi, int pnum) 
		ubi_err("paranoid check failed for PEB %d", pnum);

		ubi_dbg_dump_vid_hdr(vid_hdr);

		ubi_dbg_dump_stack();

		err = 1;

		err = -EINVAL;

		goto exit;

	}
@@ -1281,6 +1296,61 @@ exit: 
	return err;

}



/**

 * ubi_dbg_check_write - make sure write succeeded.

 * @ubi: UBI device description object

 * @buf: buffer with data which were written

 * @pnum: physical eraseblock number the data were written to

 * @offset: offset within the physical eraseblock the data were written to

 * @len: how many bytes were written

 *

 * This functions reads data which were recently written and compares it with

 * the original data buffer - the data have to match. Returns zero if the data

 * match and a negative error code if not or in case of failure.

 */

int ubi_dbg_check_write(struct ubi_device *ubi, const void *buf, int pnum,

			int offset, int len)

{

	int err, i;



	mutex_lock(&ubi->dbg_buf_mutex);

	err = ubi_io_read(ubi, ubi->dbg_peb_buf, pnum, offset, len);

	if (err)

		goto out_unlock;



	for (i = 0; i < len; i++) {

		uint8_t c = ((uint8_t *)buf)[i];

		uint8_t c1 = ((uint8_t *)ubi->dbg_peb_buf)[i];

		int dump_len;



		if (c == c1)

			continue;



		ubi_err("paranoid check failed for PEB %d:%d, len %d",

			pnum, offset, len);

		ubi_msg("data differ at position %d", i);

		dump_len = max_t(int, 128, len - i);

		ubi_msg("hex dump of the original buffer from %d to %d",

			i, i + dump_len);

		print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 32, 1,

			       buf + i, dump_len, 1);

		ubi_msg("hex dump of the read buffer from %d to %d",

			i, i + dump_len);

		print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 32, 1,

			       ubi->dbg_peb_buf + i, dump_len, 1);

		ubi_dbg_dump_stack();

		err = -EINVAL;

		goto out_unlock;

	}

	mutex_unlock(&ubi->dbg_buf_mutex);



	return 0;



out_unlock:

	mutex_unlock(&ubi->dbg_buf_mutex);

	return err;

}



/**

 * ubi_dbg_check_all_ff - check that a region of flash is empty.

 * @ubi: UBI device description object
@@ -1289,8 +1359,8 @@ exit: 
 * @len: the length of the region to check

 *

 * This function returns zero if only 0xFF bytes are present at offset

 * @offset of the physical eraseblock @pnum, %1 if not, and a negative error

 * code if an error occurred.

 * @offset of the physical eraseblock @pnum, and a negative error code if not

 * or if an error occurred.

 */

int ubi_dbg_check_all_ff(struct ubi_device *ubi, int pnum, int offset, int len)

{
@@ -1321,7 +1391,7 @@ fail: 
	ubi_msg("hex dump of the %d-%d region", offset, offset + len);

	print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 32, 1,

		       ubi->dbg_peb_buf, len, 1);

	err = 1;

	err = -EINVAL;

error:

	ubi_dbg_dump_stack();

	mutex_unlock(&ubi->dbg_buf_mutex);

drivers/mtd/ubi/scan.c

+4 −7
Original line number Diff line number Diff line
@@ -974,11 +974,8 @@ struct ubi_scan_info *ubi_scan(struct ubi_device *ubi) 
			seb->ec = si->mean_ec;



	err = paranoid_check_si(ubi, si);

	if (err) {

		if (err > 0)

			err = -EINVAL;

	if (err)

		goto out_vidh;

	}



	ubi_free_vid_hdr(ubi, vidh);

	kfree(ech);
@@ -1086,8 +1083,8 @@ void ubi_scan_destroy_si(struct ubi_scan_info *si) 
 * @ubi: UBI device description object

 * @si: scanning information

 *

 * This function returns zero if the scanning information is all right, %1 if

 * not and a negative error code if an error occurred.

 * This function returns zero if the scanning information is all right, and a

 * negative error code if not or if an error occurred.

 */

static int paranoid_check_si(struct ubi_device *ubi, struct ubi_scan_info *si)

{
@@ -1346,7 +1343,7 @@ bad_vid_hdr: 


out:

	ubi_dbg_dump_stack();

	return 1;

	return -EINVAL;

}



#endif /* CONFIG_MTD_UBI_DEBUG_PARANOID */

drivers/mtd/ubi/wl.c

+8 −9
Original line number Diff line number Diff line
@@ -464,7 +464,7 @@ retry: 
				   ubi->peb_size - ubi->vid_hdr_aloffset);

	if (err) {

		ubi_err("new PEB %d does not contain all 0xFF bytes", e->pnum);

		return err > 0 ? -EINVAL : err;

		return err;

	}



	return e->pnum;
@@ -513,7 +513,7 @@ static int sync_erase(struct ubi_device *ubi, struct ubi_wl_entry *e, 
	dbg_wl("erase PEB %d, old EC %llu", e->pnum, ec);



	err = paranoid_check_ec(ubi, e->pnum, e->ec);

	if (err > 0)

	if (err)

		return -EINVAL;



	ec_hdr = kzalloc(ubi->ec_hdr_alsize, GFP_NOFS);
@@ -1572,8 +1572,7 @@ void ubi_wl_close(struct ubi_device *ubi) 
 * @ec: the erase counter to check

 *

 * This function returns zero if the erase counter of physical eraseblock @pnum

 * is equivalent to @ec, %1 if not, and a negative error code if an error

 * occurred.

 * is equivalent to @ec, and a negative error code if not or if an error occurred.

 */

static int paranoid_check_ec(struct ubi_device *ubi, int pnum, int ec)

{
@@ -1611,8 +1610,8 @@ out_free: 
 * @e: the wear-leveling entry to check

 * @root: the root of the tree

 *

 * This function returns zero if @e is in the @root RB-tree and %1 if it is

 * not.

 * This function returns zero if @e is in the @root RB-tree and %-EINVAL if it

 * is not.

 */

static int paranoid_check_in_wl_tree(struct ubi_wl_entry *e,

				     struct rb_root *root)
@@ -1623,7 +1622,7 @@ static int paranoid_check_in_wl_tree(struct ubi_wl_entry *e, 
	ubi_err("paranoid check failed for PEB %d, EC %d, RB-tree %p ",

		e->pnum, e->ec, root);

	ubi_dbg_dump_stack();

	return 1;

	return -EINVAL;

}



/**
@@ -1632,7 +1631,7 @@ static int paranoid_check_in_wl_tree(struct ubi_wl_entry *e, 
 * @ubi: UBI device description object

 * @e: the wear-leveling entry to check

 *

 * This function returns zero if @e is in @ubi->pq and %1 if it is not.

 * This function returns zero if @e is in @ubi->pq and %-EINVAL if it is not.

 */

static int paranoid_check_in_pq(struct ubi_device *ubi, struct ubi_wl_entry *e)

{
@@ -1647,6 +1646,6 @@ static int paranoid_check_in_pq(struct ubi_device *ubi, struct ubi_wl_entry *e) 
	ubi_err("paranoid check failed for PEB %d, EC %d, Protect queue",

		e->pnum, e->ec);

	ubi_dbg_dump_stack();

	return 1;

	return -EINVAL;

}

#endif /* CONFIG_MTD_UBI_DEBUG_PARANOID */