Convert FFS_MEDIAERR to (mostly) -ENOENT and -EIO.  Some additional code surgery
needed to propogate correct error codes upwards.

Signed-off-by: Valdis Kletnieks <valdis.kletni...@vt.edu>
---
 drivers/staging/exfat/exfat.h        |   1 -
 drivers/staging/exfat/exfat_blkdev.c |  18 ++---
 drivers/staging/exfat/exfat_core.c   |  80 +++++++++----------
 drivers/staging/exfat/exfat_super.c  | 115 ++++++++++++++-------------
 4 files changed, 107 insertions(+), 107 deletions(-)

diff --git a/drivers/staging/exfat/exfat.h b/drivers/staging/exfat/exfat.h
index 4f9ba235d967..286605262345 100644
--- a/drivers/staging/exfat/exfat.h
+++ b/drivers/staging/exfat/exfat.h
@@ -210,7 +210,6 @@ static inline u16 get_row_index(u16 i)
 
 /* return values */
 #define FFS_SUCCESS             0
-#define FFS_MEDIAERR            1
 #define FFS_MOUNTED             3
 #define FFS_NOTMOUNTED          4
 #define FFS_ALIGNMENTERR        5
diff --git a/drivers/staging/exfat/exfat_blkdev.c 
b/drivers/staging/exfat/exfat_blkdev.c
index 81d20e6241c6..0abae041f632 100644
--- a/drivers/staging/exfat/exfat_blkdev.c
+++ b/drivers/staging/exfat/exfat_blkdev.c
@@ -40,11 +40,11 @@ int bdev_read(struct super_block *sb, sector_t secno, 
struct buffer_head **bh,
        long flags = sbi->debug_flags;
 
        if (flags & EXFAT_DEBUGFLAGS_ERROR_RW)
-               return FFS_MEDIAERR;
+               return -EIO;
 #endif /* CONFIG_EXFAT_KERNEL_DEBUG */
 
        if (!p_bd->opened)
-               return FFS_MEDIAERR;
+               return -ENODEV;
 
        if (*bh)
                __brelse(*bh);
@@ -62,7 +62,7 @@ int bdev_read(struct super_block *sb, sector_t secno, struct 
buffer_head **bh,
        WARN(!p_fs->dev_ejected,
             "[EXFAT] No bh, device seems wrong or to be ejected.\n");
 
-       return FFS_MEDIAERR;
+       return -EIO;
 }
 
 int bdev_write(struct super_block *sb, sector_t secno, struct buffer_head *bh,
@@ -77,11 +77,11 @@ int bdev_write(struct super_block *sb, sector_t secno, 
struct buffer_head *bh,
        long flags = sbi->debug_flags;
 
        if (flags & EXFAT_DEBUGFLAGS_ERROR_RW)
-               return FFS_MEDIAERR;
+               return -EIO;
 #endif /* CONFIG_EXFAT_KERNEL_DEBUG */
 
        if (!p_bd->opened)
-               return FFS_MEDIAERR;
+               return -ENODEV;
 
        if (secno == bh->b_blocknr) {
                lock_buffer(bh);
@@ -89,7 +89,7 @@ int bdev_write(struct super_block *sb, sector_t secno, struct 
buffer_head *bh,
                mark_buffer_dirty(bh);
                unlock_buffer(bh);
                if (sync && (sync_dirty_buffer(bh) != 0))
-                       return FFS_MEDIAERR;
+                       return -EIO;
        } else {
                count = num_secs << p_bd->sector_size_bits;
 
@@ -115,7 +115,7 @@ int bdev_write(struct super_block *sb, sector_t secno, 
struct buffer_head *bh,
        WARN(!p_fs->dev_ejected,
             "[EXFAT] No bh, device seems wrong or to be ejected.\n");
 
-       return FFS_MEDIAERR;
+       return -EIO;
 }
 
 int bdev_sync(struct super_block *sb)
@@ -126,11 +126,11 @@ int bdev_sync(struct super_block *sb)
        long flags = sbi->debug_flags;
 
        if (flags & EXFAT_DEBUGFLAGS_ERROR_RW)
-               return FFS_MEDIAERR;
+               return -EIO;
 #endif /* CONFIG_EXFAT_KERNEL_DEBUG */
 
        if (!p_bd->opened)
-               return FFS_MEDIAERR;
+               return -ENODEV;
 
        return sync_blockdev(sb->s_bdev);
 }
diff --git a/drivers/staging/exfat/exfat_core.c 
b/drivers/staging/exfat/exfat_core.c
index e90b54a17150..2f6e9d724625 100644
--- a/drivers/staging/exfat/exfat_core.c
+++ b/drivers/staging/exfat/exfat_core.c
@@ -252,13 +252,13 @@ s32 exfat_alloc_cluster(struct super_block *sb, s32 
num_alloc,
                }
 
                if (set_alloc_bitmap(sb, new_clu - 2) != FFS_SUCCESS)
-                       return -1;
+                       return -EIO;
 
                num_clusters++;
 
                if (p_chain->flags == 0x01) {
                        if (FAT_write(sb, new_clu, CLUSTER_32(~0)) < 0)
-                               return -1;
+                               return -EIO;
                }
 
                if (p_chain->dir == CLUSTER_32(~0)) {
@@ -266,7 +266,7 @@ s32 exfat_alloc_cluster(struct super_block *sb, s32 
num_alloc,
                } else {
                        if (p_chain->flags == 0x01) {
                                if (FAT_write(sb, last_clu, new_clu) < 0)
-                                       return -1;
+                                       return -EIO;
                        }
                }
                last_clu = new_clu;
@@ -526,7 +526,7 @@ s32 load_alloc_bitmap(struct super_block *sb)
                        ep = (struct bmap_dentry_t *)get_entry_in_dir(sb, &clu,
                                                                      i, NULL);
                        if (!ep)
-                               return FFS_MEDIAERR;
+                               return -ENOENT;
 
                        type = p_fs->fs_func->get_entry_type((struct dentry_t 
*)ep);
 
@@ -570,7 +570,7 @@ s32 load_alloc_bitmap(struct super_block *sb)
                }
 
                if (FAT_read(sb, clu.dir, &clu.dir) != 0)
-                       return FFS_MEDIAERR;
+                       return -EIO;
        }
 
        return -EFSCORRUPTED;
@@ -856,14 +856,14 @@ s32 load_upcase_table(struct super_block *sb)
        clu.flags = 0x01;
 
        if (p_fs->dev_ejected)
-               return FFS_MEDIAERR;
+               return -EIO;
 
        while (clu.dir != CLUSTER_32(~0)) {
                for (i = 0; i < p_fs->dentries_per_clu; i++) {
                        ep = (struct case_dentry_t *)get_entry_in_dir(sb, &clu,
                                                                      i, NULL);
                        if (!ep)
-                               return FFS_MEDIAERR;
+                               return -ENOENT;
 
                        type = p_fs->fs_func->get_entry_type((struct dentry_t 
*)ep);
 
@@ -883,7 +883,7 @@ s32 load_upcase_table(struct super_block *sb)
                        return FFS_SUCCESS;
                }
                if (FAT_read(sb, clu.dir, &clu.dir) != 0)
-                       return FFS_MEDIAERR;
+                       return -EIO;
        }
        /* load default upcase table */
        return __load_default_upcase_table(sb);
@@ -1246,7 +1246,7 @@ s32 fat_init_dir_entry(struct super_block *sb, struct 
chain_t *p_dir, s32 entry,
        dos_ep = (struct dos_dentry_t *)get_entry_in_dir(sb, p_dir, entry,
                                                         &sector);
        if (!dos_ep)
-               return FFS_MEDIAERR;
+               return -EIO;
 
        init_dos_entry(dos_ep, type, start_clu);
        buf_modify(sb, sector);
@@ -1268,12 +1268,12 @@ s32 exfat_init_dir_entry(struct super_block *sb, struct 
chain_t *p_dir,
        file_ep = (struct file_dentry_t *)get_entry_in_dir(sb, p_dir, entry,
                                                           &sector);
        if (!file_ep)
-               return FFS_MEDIAERR;
+               return -ENOENT;
 
        strm_ep = (struct strm_dentry_t *)get_entry_in_dir(sb, p_dir, entry + 1,
                                                           &sector);
        if (!strm_ep)
-               return FFS_MEDIAERR;
+               return -ENOENT;
 
        init_file_entry(file_ep, type);
        buf_modify(sb, sector);
@@ -1299,7 +1299,7 @@ static s32 fat_init_ext_entry(struct super_block *sb, 
struct chain_t *p_dir,
        dos_ep = (struct dos_dentry_t *)get_entry_in_dir(sb, p_dir, entry,
                                                         &sector);
        if (!dos_ep)
-               return FFS_MEDIAERR;
+               return -EIO;
 
        dos_ep->lcase = p_dosname->name_case;
        memcpy(dos_ep->name, p_dosname->name, DOS_NAME_LENGTH);
@@ -1315,7 +1315,7 @@ static s32 fat_init_ext_entry(struct super_block *sb, 
struct chain_t *p_dir,
                                                                         entry 
- i,
                                                                         
&sector);
                        if (!ext_ep)
-                               return FFS_MEDIAERR;
+                               return -EIO;
 
                        init_ext_entry(ext_ep, i, chksum, uniname);
                        buf_modify(sb, sector);
@@ -1326,7 +1326,7 @@ static s32 fat_init_ext_entry(struct super_block *sb, 
struct chain_t *p_dir,
                                                                 entry - i,
                                                                 &sector);
                if (!ext_ep)
-                       return FFS_MEDIAERR;
+                       return -EIO;
 
                init_ext_entry(ext_ep, i + 0x40, chksum, uniname);
                buf_modify(sb, sector);
@@ -1350,7 +1350,7 @@ static s32 exfat_init_ext_entry(struct super_block *sb, 
struct chain_t *p_dir,
        file_ep = (struct file_dentry_t *)get_entry_in_dir(sb, p_dir, entry,
                                                           &sector);
        if (!file_ep)
-               return FFS_MEDIAERR;
+               return -ENOENT;
 
        file_ep->num_ext = (u8)(num_entries - 1);
        buf_modify(sb, sector);
@@ -1358,7 +1358,7 @@ static s32 exfat_init_ext_entry(struct super_block *sb, 
struct chain_t *p_dir,
        strm_ep = (struct strm_dentry_t *)get_entry_in_dir(sb, p_dir, entry + 1,
                                                           &sector);
        if (!strm_ep)
-               return FFS_MEDIAERR;
+               return -ENOENT;
 
        strm_ep->name_len = p_uniname->name_len;
        SET16_A(strm_ep->name_hash, p_uniname->name_hash);
@@ -1369,7 +1369,7 @@ static s32 exfat_init_ext_entry(struct super_block *sb, 
struct chain_t *p_dir,
                                                                   entry + i,
                                                                   &sector);
                if (!name_ep)
-                       return FFS_MEDIAERR;
+                       return -ENOENT;
 
                init_name_entry(name_ep, uniname);
                buf_modify(sb, sector);
@@ -1592,7 +1592,7 @@ static s32 _walk_fat_chain(struct super_block *sb, struct 
chain_t *p_dir,
        } else {
                while (clu_offset > 0) {
                        if (FAT_read(sb, cur_clu, &cur_clu) == -1)
-                               return FFS_MEDIAERR;
+                               return -EIO;
                        clu_offset--;
                }
        }
@@ -2084,10 +2084,10 @@ s32 find_empty_entry(struct inode *inode, struct 
chain_t *p_dir, s32 num_entries
                /* (1) allocate a cluster */
                ret = p_fs->fs_func->alloc_cluster(sb, 1, &clu);
                if (ret < 1)
-                       return -1;
+                       return -EIO;
 
                if (clear_cluster(sb, clu.dir) != FFS_SUCCESS)
-                       return -1;
+                       return -EIO;
 
                /* (2) append to the FAT chain */
                if (clu.flags != p_dir->flags) {
@@ -2097,7 +2097,7 @@ s32 find_empty_entry(struct inode *inode, struct chain_t 
*p_dir, s32 num_entries
                }
                if (clu.flags == 0x01)
                        if (FAT_write(sb, last_clu, clu.dir) < 0)
-                               return -1;
+                               return -EIO;
 
                if (p_fs->hint_uentry.entry == -1) {
                        p_fs->hint_uentry.dir = p_dir->dir;
@@ -2118,7 +2118,7 @@ s32 find_empty_entry(struct inode *inode, struct chain_t 
*p_dir, s32 num_entries
                                ep = get_entry_in_dir(sb, &fid->dir,
                                                      fid->entry + 1, &sector);
                                if (!ep)
-                                       return -1;
+                                       return -ENOENT;
                                p_fs->fs_func->set_entry_size(ep, size);
                                p_fs->fs_func->set_entry_flag(ep, p_dir->flags);
                                buf_modify(sb, sector);
@@ -2464,7 +2464,7 @@ s32 count_dos_name_entries(struct super_block *sb, struct 
chain_t *p_dir,
                for (i = 0; i < dentries_per_clu; i++) {
                        ep = get_entry_in_dir(sb, &clu, i, NULL);
                        if (!ep)
-                               return -1;
+                               return -ENOENT;
 
                        entry_type = p_fs->fs_func->get_entry_type(ep);
 
@@ -2488,7 +2488,7 @@ s32 count_dos_name_entries(struct super_block *sb, struct 
chain_t *p_dir,
                                clu.dir = CLUSTER_32(~0);
                } else {
                        if (FAT_read(sb, clu.dir, &clu.dir) != 0)
-                               return -1;
+                               return -EIO;
                }
        }
 
@@ -2772,7 +2772,7 @@ s32 fat_generate_dos_name(struct super_block *sb, struct 
chain_t *p_dir,
                        ep = (struct dos_dentry_t *)get_entry_in_dir(sb, &clu,
                                                                     i, NULL);
                        if (!ep)
-                               return FFS_MEDIAERR;
+                               return -ENOENT;
 
                        type = p_fs->fs_func->get_entry_type((struct dentry_t *)
                                                             ep);
@@ -2811,7 +2811,7 @@ s32 fat_generate_dos_name(struct super_block *sb, struct 
chain_t *p_dir,
                        break; /* FAT16 root_dir */
 
                if (FAT_read(sb, clu.dir, &clu.dir) != 0)
-                       return FFS_MEDIAERR;
+                       return -EIO;
        }
 
        count = 0;
@@ -3226,7 +3226,7 @@ s32 create_dir(struct inode *inode, struct chain_t *p_dir,
        /* (1) allocate a cluster */
        ret = fs_func->alloc_cluster(sb, 1, &clu);
        if (ret < 0)
-               return FFS_MEDIAERR;
+               return ret;
        else if (ret == 0)
                return -ENOSPC;
 
@@ -3395,7 +3395,7 @@ s32 rename_file(struct inode *inode, struct chain_t 
*p_dir, s32 oldentry,
 
        epold = get_entry_in_dir(sb, p_dir, oldentry, &sector_old);
        if (!epold)
-               return FFS_MEDIAERR;
+               return -ENOENT;
 
        buf_lock(sb, sector_old);
 
@@ -3404,7 +3404,7 @@ s32 rename_file(struct inode *inode, struct chain_t 
*p_dir, s32 oldentry,
                                                     epold);
        if (num_old_entries < 0) {
                buf_unlock(sb, sector_old);
-               return FFS_MEDIAERR;
+               return -ENOENT;
        }
        num_old_entries++;
 
@@ -3425,7 +3425,7 @@ s32 rename_file(struct inode *inode, struct chain_t 
*p_dir, s32 oldentry,
                epnew = get_entry_in_dir(sb, p_dir, newentry, &sector_new);
                if (!epnew) {
                        buf_unlock(sb, sector_old);
-                       return FFS_MEDIAERR;
+                       return -ENOENT;
                }
 
                memcpy((void *)epnew, (void *)epold, DENTRY_SIZE);
@@ -3447,7 +3447,7 @@ s32 rename_file(struct inode *inode, struct chain_t 
*p_dir, s32 oldentry,
 
                        if (!epold || !epnew) {
                                buf_unlock(sb, sector_old);
-                               return FFS_MEDIAERR;
+                               return -ENOENT;
                        }
 
                        memcpy((void *)epnew, (void *)epold, DENTRY_SIZE);
@@ -3502,7 +3502,7 @@ s32 move_file(struct inode *inode, struct chain_t 
*p_olddir, s32 oldentry,
 
        epmov = get_entry_in_dir(sb, p_olddir, oldentry, &sector_mov);
        if (!epmov)
-               return FFS_MEDIAERR;
+               return -ENOENT;
 
        /* check if the source and target directory is the same */
        if (fs_func->get_entry_type(epmov) == TYPE_DIR &&
@@ -3516,7 +3516,7 @@ s32 move_file(struct inode *inode, struct chain_t 
*p_olddir, s32 oldentry,
                                                     epmov);
        if (num_old_entries < 0) {
                buf_unlock(sb, sector_mov);
-               return FFS_MEDIAERR;
+               return -ENOENT;
        }
        num_old_entries++;
 
@@ -3536,7 +3536,7 @@ s32 move_file(struct inode *inode, struct chain_t 
*p_olddir, s32 oldentry,
        epnew = get_entry_in_dir(sb, p_newdir, newentry, &sector_new);
        if (!epnew) {
                buf_unlock(sb, sector_mov);
-               return FFS_MEDIAERR;
+               return -ENOENT;
        }
 
        memcpy((void *)epnew, (void *)epmov, DENTRY_SIZE);
@@ -3556,7 +3556,7 @@ s32 move_file(struct inode *inode, struct chain_t 
*p_olddir, s32 oldentry,
                                         &sector_new);
                if (!epmov || !epnew) {
                        buf_unlock(sb, sector_mov);
-                       return FFS_MEDIAERR;
+                       return -ENOENT;
                }
 
                memcpy((void *)epnew, (void *)epmov, DENTRY_SIZE);
@@ -3569,7 +3569,7 @@ s32 move_file(struct inode *inode, struct chain_t 
*p_olddir, s32 oldentry,
 
                epnew = get_entry_in_dir(sb, &clu, 1, &sector_new);
                if (!epnew)
-                       return FFS_MEDIAERR;
+                       return -ENOENT;
 
                if (p_newdir->dir == p_fs->root_dir)
                        fs_func->set_entry_clu0(epnew, CLUSTER_32(0));
@@ -3601,7 +3601,7 @@ s32 move_file(struct inode *inode, struct chain_t 
*p_olddir, s32 oldentry,
 int sector_read(struct super_block *sb, sector_t sec, struct buffer_head **bh,
                bool read)
 {
-       s32 ret = FFS_MEDIAERR;
+       s32 ret = -EIO;
        struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
 
        if ((sec >= (p_fs->PBR_sector + p_fs->num_sectors)) &&
@@ -3624,7 +3624,7 @@ int sector_read(struct super_block *sb, sector_t sec, 
struct buffer_head **bh,
 int sector_write(struct super_block *sb, sector_t sec, struct buffer_head *bh,
                 bool sync)
 {
-       s32 ret = FFS_MEDIAERR;
+       s32 ret = -EIO;
        struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
 
        if (sec >= (p_fs->PBR_sector + p_fs->num_sectors) &&
@@ -3653,7 +3653,7 @@ int sector_write(struct super_block *sb, sector_t sec, 
struct buffer_head *bh,
 int multi_sector_read(struct super_block *sb, sector_t sec,
                      struct buffer_head **bh, s32 num_secs, bool read)
 {
-       s32 ret = FFS_MEDIAERR;
+       s32 ret = -EIO;
        struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
 
        if (((sec + num_secs) > (p_fs->PBR_sector + p_fs->num_sectors)) &&
@@ -3676,7 +3676,7 @@ int multi_sector_read(struct super_block *sb, sector_t 
sec,
 int multi_sector_write(struct super_block *sb, sector_t sec,
                       struct buffer_head *bh, s32 num_secs, bool sync)
 {
-       s32 ret = FFS_MEDIAERR;
+       s32 ret = -EIO;
        struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
 
        if ((sec + num_secs) > (p_fs->PBR_sector + p_fs->num_sectors) &&
diff --git a/drivers/staging/exfat/exfat_super.c 
b/drivers/staging/exfat/exfat_super.c
index e0c4a3ab8458..d6d5f0fd47fd 100644
--- a/drivers/staging/exfat/exfat_super.c
+++ b/drivers/staging/exfat/exfat_super.c
@@ -364,7 +364,9 @@ static int ffsMountVol(struct super_block *sb)
        bdev_open(sb);
 
        if (p_bd->sector_size < sb->s_blocksize) {
-               ret = FFS_MEDIAERR;
+               printk(KERN_INFO "EXFAT: maont failed - sector size %d less 
than blocksize %ld\n",
+                       p_bd->sector_size,  sb->s_blocksize);
+               ret = -EINVAL;
                goto out;
        }
        if (p_bd->sector_size > sb->s_blocksize)
@@ -372,7 +374,7 @@ static int ffsMountVol(struct super_block *sb)
 
        /* read Sector 0 */
        if (sector_read(sb, 0, &tmp_bh, 1) != FFS_SUCCESS) {
-               ret = FFS_MEDIAERR;
+               ret = -EIO;
                goto out;
        }
 
@@ -435,7 +437,7 @@ static int ffsMountVol(struct super_block *sb)
                        free_alloc_bitmap(sb);
                }
                bdev_close(sb);
-               ret = FFS_MEDIAERR;
+               ret = -EIO;
                goto out;
        }
 
@@ -475,7 +477,7 @@ static int ffsUmountVol(struct super_block *sb)
 
        if (p_fs->dev_ejected) {
                pr_info("[EXFAT] unmounted with media errors. Device is already 
ejected.\n");
-               err = FFS_MEDIAERR;
+               err = -EIO;
        }
 
        buf_shutdown(sb);
@@ -511,7 +513,7 @@ static int ffsGetVolInfo(struct super_block *sb, struct 
vol_info_t *info)
        info->FreeClusters = info->NumClusters - info->UsedClusters;
 
        if (p_fs->dev_ejected)
-               err = FFS_MEDIAERR;
+               err = -EIO;
 
        /* release the lock for file system critical section */
        mutex_unlock(&p_fs->v_mutex);
@@ -532,7 +534,7 @@ static int ffsSyncVol(struct super_block *sb, bool do_sync)
        fs_set_vol_flags(sb, VOL_CLEAN);
 
        if (p_fs->dev_ejected)
-               err = FFS_MEDIAERR;
+               err = -EIO;
 
        /* release the lock for file system critical section */
        mutex_unlock(&p_fs->v_mutex);
@@ -601,14 +603,14 @@ static int ffsLookupFile(struct inode *inode, char *path, 
struct file_id_t *fid)
                        es = get_entry_set_in_dir(sb, &dir, dentry,
                                                  ES_2_ENTRIES, &ep);
                        if (!es) {
-                               ret =  FFS_MEDIAERR;
+                               ret =  -ENOENT;
                                goto out;
                        }
                        ep2 = ep + 1;
                } else {
                        ep = get_entry_in_dir(sb, &dir, dentry, NULL);
                        if (!ep) {
-                               ret =  FFS_MEDIAERR;
+                               ret =  -ENOENT;
                                goto out;
                        }
                        ep2 = ep;
@@ -633,7 +635,7 @@ static int ffsLookupFile(struct inode *inode, char *path, 
struct file_id_t *fid)
        }
 
        if (p_fs->dev_ejected)
-               ret = FFS_MEDIAERR;
+               ret = -EIO;
 out:
        /* release the lock for file system critical section */
        mutex_unlock(&p_fs->v_mutex);
@@ -673,7 +675,7 @@ static int ffsCreateFile(struct inode *inode, char *path, 
u8 mode,
 #endif
 
        if (p_fs->dev_ejected)
-               ret = FFS_MEDIAERR;
+               ret = -EIO;
 
 out:
        /* release the lock for file system critical section */
@@ -744,7 +746,7 @@ static int ffsReadFile(struct inode *inode, struct 
file_id_t *fid, void *buffer,
                        while (clu_offset > 0) {
                                /* clu = FAT_read(sb, clu); */
                                if (FAT_read(sb, clu, &clu) == -1) {
-                                       ret = FFS_MEDIAERR;
+                                       ret = -EIO;
                                        goto out;
                                }
 
@@ -799,7 +801,7 @@ static int ffsReadFile(struct inode *inode, struct 
file_id_t *fid, void *buffer,
                *rcount = read_bytes;
 
        if (p_fs->dev_ejected)
-               ret = FFS_MEDIAERR;
+               ret = -EIO;
 
 out:
        /* release the lock for file system critical section */
@@ -890,7 +892,7 @@ static int ffsWriteFile(struct inode *inode, struct 
file_id_t *fid,
                                last_clu = clu;
                                /* clu = FAT_read(sb, clu); */
                                if (FAT_read(sb, clu, &clu) == -1) {
-                                       ret = FFS_MEDIAERR;
+                                       ret = -EIO;
                                        goto out;
                                }
                                clu_offset--;
@@ -912,7 +914,7 @@ static int ffsWriteFile(struct inode *inode, struct 
file_id_t *fid,
                        if (num_alloced == 0)
                                break;
                        if (num_alloced < 0) {
-                               ret = FFS_MEDIAERR;
+                               ret = num_alloced;
                                goto out;
                        }
 
@@ -1057,7 +1059,7 @@ static int ffsWriteFile(struct inode *inode, struct 
file_id_t *fid,
                ret = -ENOSPC;
 
        else if (p_fs->dev_ejected)
-               ret = FFS_MEDIAERR;
+               ret = -EIO;
 
 out:
        /* release the lock for file system critical section */
@@ -1118,7 +1120,7 @@ static int ffsTruncateFile(struct inode *inode, u64 
old_size, u64 new_size)
                        while (num_clusters > 0) {
                                last_clu = clu.dir;
                                if (FAT_read(sb, clu.dir, &clu.dir) == -1) {
-                                       ret = FFS_MEDIAERR;
+                                       ret = -EIO;
                                        goto out;
                                }
                                num_clusters--;
@@ -1140,14 +1142,14 @@ static int ffsTruncateFile(struct inode *inode, u64 
old_size, u64 new_size)
                es = get_entry_set_in_dir(sb, &fid->dir, fid->entry,
                                          ES_ALL_ENTRIES, &ep);
                if (!es) {
-                       ret = FFS_MEDIAERR;
+                       ret = -ENOENT;
                        goto out;
                        }
                ep2 = ep + 1;
        } else {
                ep = get_entry_in_dir(sb, &fid->dir, fid->entry, &sector);
                if (!ep) {
-                       ret = FFS_MEDIAERR;
+                       ret = -ENOENT;
                        goto out;
                }
                ep2 = ep;
@@ -1189,7 +1191,7 @@ static int ffsTruncateFile(struct inode *inode, u64 
old_size, u64 new_size)
 #endif
 
        if (p_fs->dev_ejected)
-               ret = FFS_MEDIAERR;
+               ret = -EIO;
 
 out:
        pr_debug("%s exited (%d)\n", __func__, ret);
@@ -1262,7 +1264,7 @@ static int ffsMoveFile(struct inode *old_parent_inode, 
struct file_id_t *fid,
 
        ep = get_entry_in_dir(sb, &olddir, dentry, NULL);
        if (!ep) {
-               ret = FFS_MEDIAERR;
+               ret = -ENOENT;
                goto out2;
        }
 
@@ -1275,7 +1277,7 @@ static int ffsMoveFile(struct inode *old_parent_inode, 
struct file_id_t *fid,
        if (new_inode) {
                u32 entry_type;
 
-               ret = FFS_MEDIAERR;
+               ret = -ENOENT;
                new_fid = &EXFAT_I(new_inode)->fid;
 
                update_parent_info(new_fid, new_parent_inode);
@@ -1337,7 +1339,7 @@ static int ffsMoveFile(struct inode *old_parent_inode, 
struct file_id_t *fid,
 #endif
 
        if (p_fs->dev_ejected)
-               ret = FFS_MEDIAERR;
+               ret = -EIO;
 out2:
        /* release the lock for file system critical section */
        mutex_unlock(&p_fs->v_mutex);
@@ -1369,7 +1371,7 @@ static int ffsRemoveFile(struct inode *inode, struct 
file_id_t *fid)
 
        ep = get_entry_in_dir(sb, &dir, dentry, NULL);
        if (!ep) {
-               ret = FFS_MEDIAERR;
+               ret = -ENOENT;
                goto out;
        }
 
@@ -1399,7 +1401,7 @@ static int ffsRemoveFile(struct inode *inode, struct 
file_id_t *fid)
 #endif
 
        if (p_fs->dev_ejected)
-               ret = FFS_MEDIAERR;
+               ret = -EIO;
 out:
        /* release the lock for file system critical section */
        mutex_unlock(&p_fs->v_mutex);
@@ -1423,7 +1425,7 @@ static int ffsSetAttr(struct inode *inode, u32 attr)
 
        if (fid->attr == attr) {
                if (p_fs->dev_ejected)
-                       return FFS_MEDIAERR;
+                       return -EIO;
                return FFS_SUCCESS;
        }
 
@@ -1431,7 +1433,7 @@ static int ffsSetAttr(struct inode *inode, u32 attr)
                if ((fid->dir.dir == p_fs->root_dir) &&
                    (fid->entry == -1)) {
                        if (p_fs->dev_ejected)
-                               return FFS_MEDIAERR;
+                               return -EIO;
                        return FFS_SUCCESS;
                }
        }
@@ -1444,13 +1446,13 @@ static int ffsSetAttr(struct inode *inode, u32 attr)
                es = get_entry_set_in_dir(sb, &fid->dir, fid->entry,
                                          ES_ALL_ENTRIES, &ep);
                if (!es) {
-                       ret = FFS_MEDIAERR;
+                       ret = -ENOENT;
                        goto out;
                }
        } else {
                ep = get_entry_in_dir(sb, &fid->dir, fid->entry, &sector);
                if (!ep) {
-                       ret = FFS_MEDIAERR;
+                       ret = -ENOENT;
                        goto out;
                }
        }
@@ -1460,7 +1462,7 @@ static int ffsSetAttr(struct inode *inode, u32 attr)
        if (((type == TYPE_FILE) && (attr & ATTR_SUBDIR)) ||
            ((type == TYPE_DIR) && (!(attr & ATTR_SUBDIR)))) {
                if (p_fs->dev_ejected)
-                       ret = FFS_MEDIAERR;
+                       ret = -EIO;
                else
                        ret = FFS_ERROR;
 
@@ -1488,7 +1490,7 @@ static int ffsSetAttr(struct inode *inode, u32 attr)
 #endif
 
        if (p_fs->dev_ejected)
-               ret = FFS_MEDIAERR;
+               ret = -EIO;
 out:
        /* release the lock for file system critical section */
        mutex_unlock(&p_fs->v_mutex);
@@ -1544,13 +1546,13 @@ static int ffsReadStat(struct inode *inode, struct 
dir_entry_t *info)
 
                        count = count_dos_name_entries(sb, &dir, TYPE_DIR);
                        if (count < 0) {
-                               ret = FFS_MEDIAERR;
+                               ret = count; /* propogate error upward */
                                goto out;
                        }
                        info->NumSubdirs = count;
 
                        if (p_fs->dev_ejected)
-                               ret = FFS_MEDIAERR;
+                               ret = -EIO;
                        goto out;
                }
        }
@@ -1560,14 +1562,14 @@ static int ffsReadStat(struct inode *inode, struct 
dir_entry_t *info)
                es = get_entry_set_in_dir(sb, &fid->dir, fid->entry,
                                          ES_2_ENTRIES, &ep);
                if (!es) {
-                       ret = FFS_MEDIAERR;
+                       ret = -ENOENT;
                        goto out;
                }
                ep2 = ep + 1;
        } else {
                ep = get_entry_in_dir(sb, &fid->dir, fid->entry, &sector);
                if (!ep) {
-                       ret = FFS_MEDIAERR;
+                       ret = -ENOENT;
                        goto out;
                }
                ep2 = ep;
@@ -1633,14 +1635,14 @@ static int ffsReadStat(struct inode *inode, struct 
dir_entry_t *info)
 
                count = count_dos_name_entries(sb, &dir, TYPE_DIR);
                if (count < 0) {
-                       ret = FFS_MEDIAERR;
+                       ret = count; /* propogate error upward */
                        goto out;
                }
                info->NumSubdirs += count;
        }
 
        if (p_fs->dev_ejected)
-               ret = FFS_MEDIAERR;
+               ret = -EIO;
 
 out:
        /* release the lock for file system critical section */
@@ -1671,7 +1673,7 @@ static int ffsWriteStat(struct inode *inode, struct 
dir_entry_t *info)
                if ((fid->dir.dir == p_fs->root_dir) &&
                    (fid->entry == -1)) {
                        if (p_fs->dev_ejected)
-                               ret = FFS_MEDIAERR;
+                               ret = -EIO;
                        ret = FFS_SUCCESS;
                        goto out;
                }
@@ -1684,7 +1686,7 @@ static int ffsWriteStat(struct inode *inode, struct 
dir_entry_t *info)
                es = get_entry_set_in_dir(sb, &fid->dir, fid->entry,
                                          ES_ALL_ENTRIES, &ep);
                if (!es) {
-                       ret = FFS_MEDIAERR;
+                       ret = -ENOENT;
                        goto out;
                }
                ep2 = ep + 1;
@@ -1692,7 +1694,7 @@ static int ffsWriteStat(struct inode *inode, struct 
dir_entry_t *info)
                /* for other than exfat */
                ep = get_entry_in_dir(sb, &fid->dir, fid->entry, &sector);
                if (!ep) {
-                       ret = FFS_MEDIAERR;
+                       ret = -ENOENT;
                        goto out;
                }
                ep2 = ep;
@@ -1727,7 +1729,7 @@ static int ffsWriteStat(struct inode *inode, struct 
dir_entry_t *info)
        }
 
        if (p_fs->dev_ejected)
-               ret = FFS_MEDIAERR;
+               ret = -EIO;
 
 out:
        /* release the lock for file system critical section */
@@ -1789,7 +1791,7 @@ static int ffsMapCluster(struct inode *inode, s32 
clu_offset, u32 *clu)
                while ((clu_offset > 0) && (*clu != CLUSTER_32(~0))) {
                        last_clu = *clu;
                        if (FAT_read(sb, *clu, clu) == -1) {
-                               ret = FFS_MEDIAERR;
+                               ret = -EIO;
                                goto out;
                        }
                        clu_offset--;
@@ -1807,7 +1809,7 @@ static int ffsMapCluster(struct inode *inode, s32 
clu_offset, u32 *clu)
                /* (1) allocate a cluster */
                num_alloced = p_fs->fs_func->alloc_cluster(sb, 1, &new_clu);
                if (num_alloced < 0) {
-                       ret = FFS_MEDIAERR;
+                       ret = -EIO;
                        goto out;
                } else if (num_alloced == 0) {
                        ret = -ENOSPC;
@@ -1838,7 +1840,7 @@ static int ffsMapCluster(struct inode *inode, s32 
clu_offset, u32 *clu)
                        es = get_entry_set_in_dir(sb, &fid->dir, fid->entry,
                                                  ES_ALL_ENTRIES, &ep);
                        if (!es) {
-                               ret = FFS_MEDIAERR;
+                               ret = -ENOENT;
                                goto out;
                        }
                        /* get stream entry */
@@ -1851,7 +1853,7 @@ static int ffsMapCluster(struct inode *inode, s32 
clu_offset, u32 *clu)
                                ep = get_entry_in_dir(sb, &fid->dir,
                                                      fid->entry, &sector);
                                if (!ep) {
-                                       ret = FFS_MEDIAERR;
+                                       ret = -ENOENT;
                                        goto out;
                                }
                        }
@@ -1881,7 +1883,7 @@ static int ffsMapCluster(struct inode *inode, s32 
clu_offset, u32 *clu)
        fid->hint_last_clu = *clu;
 
        if (p_fs->dev_ejected)
-               ret = FFS_MEDIAERR;
+               ret = -EIO;
 
 out:
        /* release the lock for file system critical section */
@@ -1926,7 +1928,7 @@ static int ffsCreateDir(struct inode *inode, char *path, 
struct file_id_t *fid)
 #endif
 
        if (p_fs->dev_ejected)
-               ret = FFS_MEDIAERR;
+               ret = -EIO;
 out:
        /* release the lock for file system critical section */
        mutex_unlock(&p_fs->v_mutex);
@@ -1956,7 +1958,7 @@ static int ffsReadDir(struct inode *inode, struct 
dir_entry_t *dir_entry)
 
        /* check if the given file ID is opened */
        if (fid->type != TYPE_DIR)
-               return -EPERM;
+               return -ENOTDIR;
 
        /* acquire the lock for file system critical section */
        mutex_lock(&p_fs->v_mutex);
@@ -2006,7 +2008,7 @@ static int ffsReadDir(struct inode *inode, struct 
dir_entry_t *dir_entry)
                        while (clu_offset > 0) {
                                /* clu.dir = FAT_read(sb, clu.dir); */
                                if (FAT_read(sb, clu.dir, &clu.dir) == -1) {
-                                       ret = FFS_MEDIAERR;
+                                       ret = -EIO;
                                        goto out;
                                }
                                clu_offset--;
@@ -2026,7 +2028,7 @@ static int ffsReadDir(struct inode *inode, struct 
dir_entry_t *dir_entry)
                for ( ; i < dentries_per_clu; i++, dentry++) {
                        ep = get_entry_in_dir(sb, &clu, i, &sector);
                        if (!ep) {
-                               ret = FFS_MEDIAERR;
+                               ret = -ENOENT;
                                goto out;
                        }
                        type = fs_func->get_entry_type(ep);
@@ -2074,7 +2076,7 @@ static int ffsReadDir(struct inode *inode, struct 
dir_entry_t *dir_entry)
                        if (p_fs->vol_type == EXFAT) {
                                ep = get_entry_in_dir(sb, &clu, i + 1, NULL);
                                if (!ep) {
-                                       ret = FFS_MEDIAERR;
+                                       ret = -ENOENT;
                                        goto out;
                                }
                        } else {
@@ -2098,7 +2100,7 @@ static int ffsReadDir(struct inode *inode, struct 
dir_entry_t *dir_entry)
                        fid->rwoffset = (s64)(++dentry);
 
                        if (p_fs->dev_ejected)
-                               ret = FFS_MEDIAERR;
+                               ret = -EIO;
                        goto out;
                }
 
@@ -2113,7 +2115,7 @@ static int ffsReadDir(struct inode *inode, struct 
dir_entry_t *dir_entry)
                } else {
                        /* clu.dir = FAT_read(sb, clu.dir); */
                        if (FAT_read(sb, clu.dir, &clu.dir) == -1) {
-                               ret = FFS_MEDIAERR;
+                               ret = -EIO;
                                goto out;
                        }
                }
@@ -2124,7 +2126,7 @@ static int ffsReadDir(struct inode *inode, struct 
dir_entry_t *dir_entry)
        fid->rwoffset = (s64)(++dentry);
 
        if (p_fs->dev_ejected)
-               ret = FFS_MEDIAERR;
+               ret = -EIO;
 
 out:
        /* release the lock for file system critical section */
@@ -2187,7 +2189,7 @@ static int ffsRemoveDir(struct inode *inode, struct 
file_id_t *fid)
 #endif
 
        if (p_fs->dev_ejected)
-               ret = FFS_MEDIAERR;
+               ret = -EIO;
 
 out:
        /* release the lock for file system critical section */
@@ -2247,12 +2249,11 @@ static int exfat_readdir(struct file *filp, struct 
dir_context *ctx)
                /* at least we tried to read a sector
                 * move cpos to next sector position (should be aligned)
                 */
-               if (err == FFS_MEDIAERR) {
+               if (err == -EIO) {
                        cpos += 1 << p_bd->sector_size_bits;
                        cpos &= ~((1 << p_bd->sector_size_bits) - 1);
                }
 
-               err = -EIO;
                goto end_of_dir;
        }
 
@@ -3550,7 +3551,7 @@ static int exfat_statfs(struct dentry *dentry, struct 
kstatfs *buf)
        struct vol_info_t info;
 
        if (p_fs->used_clusters == UINT_MAX) {
-               if (ffsGetVolInfo(sb, &info) == FFS_MEDIAERR)
+               if (ffsGetVolInfo(sb, &info) == -EIO)
                        return -EIO;
 
        } else {
-- 
2.24.0

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