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staging: exfat: cleanup explicit comparisons to NULL

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Fixes checkpatch.pl warnings:

  CHECK: Comparison to NULL could be written "expr"
  CHECK: Comparison to NULL could be written "!expr"

Signed-off-by: Valentin Vidic <vvidic@valentin-vidic.from.hr>
Link: https://lore.kernel.org/r/20190903205659.18856-1-vvidic@valentin-vidic.from.hr
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Valentin Vidic 2019-09-03 22:56:59 +02:00 committed by Greg Kroah-Hartman
parent 4e690bf985
commit 3b531807e6
2 changed files with 46 additions and 46 deletions
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34
drivers/staging/exfat/exfat_core.c
View File

@ -100,7 +100,7 @@ void fs_set_vol_flags(struct super_block *sb, u32 new_flag)
p_fs->vol_flag = new_flag;
if (p_fs->vol_type == EXFAT) {
if (p_fs->pbr_bh == NULL) {
if (!p_fs->pbr_bh) {
if (sector_read(sb, p_fs->PBR_sector,
&p_fs->pbr_bh, 1) != FFS_SUCCESS)
return;
@ -543,7 +543,7 @@ s32 load_alloc_bitmap(struct super_block *sb)
p_fs->vol_amap = kmalloc_array(p_fs->map_sectors,
sizeof(struct buffer_head *),
GFP_KERNEL);
if (p_fs->vol_amap == NULL)
if (!p_fs->vol_amap)
return FFS_MEMORYERR;
sector = START_SECTOR(p_fs->map_clu);
@ -685,7 +685,7 @@ void sync_alloc_bitmap(struct super_block *sb)
int i;
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
if (p_fs->vol_amap == NULL)
if (!p_fs->vol_amap)
return;
for (i = 0; i < p_fs->map_sectors; i++)
@ -714,7 +714,7 @@ static s32 __load_upcase_table(struct super_block *sb, sector_t sector,
upcase_table = p_fs->vol_utbl = kmalloc(UTBL_COL_COUNT * sizeof(u16 *),
GFP_KERNEL);
if (upcase_table == NULL)
if (!upcase_table)
return FFS_MEMORYERR;
memset(upcase_table, 0, UTBL_COL_COUNT * sizeof(u16 *));
@ -750,11 +750,11 @@ static s32 __load_upcase_table(struct super_block *sb, sector_t sector,
} else { /* uni != index , uni != 0xFFFF */
u16 col_index = get_col_index(index);
if (upcase_table[col_index] == NULL) {
if (!upcase_table[col_index]) {
pr_debug("alloc = 0x%X\n", col_index);
upcase_table[col_index] = kmalloc_array(UTBL_ROW_COUNT,
sizeof(u16), GFP_KERNEL);
if (upcase_table[col_index] == NULL) {
if (!upcase_table[col_index]) {
ret = FFS_MEMORYERR;
goto error;
}
@ -794,7 +794,7 @@ static s32 __load_default_upcase_table(struct super_block *sb)
upcase_table = p_fs->vol_utbl = kmalloc(UTBL_COL_COUNT * sizeof(u16 *),
GFP_KERNEL);
if (upcase_table == NULL)
if (!upcase_table)
return FFS_MEMORYERR;
memset(upcase_table, 0, UTBL_COL_COUNT * sizeof(u16 *));
@ -812,12 +812,12 @@ static s32 __load_default_upcase_table(struct super_block *sb)
} else { /* uni != index , uni != 0xFFFF */
u16 col_index = get_col_index(index);
if (upcase_table[col_index] == NULL) {
if (!upcase_table[col_index]) {
pr_debug("alloc = 0x%X\n", col_index);
upcase_table[col_index] = kmalloc_array(UTBL_ROW_COUNT,
sizeof(u16),
GFP_KERNEL);
if (upcase_table[col_index] == NULL) {
if (!upcase_table[col_index]) {
ret = FFS_MEMORYERR;
goto error;
}
@ -1640,7 +1640,7 @@ struct dentry_t *get_entry_with_sector(struct super_block *sb, sector_t sector,
buf = buf_getblk(sb, sector);
if (buf == NULL)
if (!buf)
return NULL;
return (struct dentry_t *)(buf + offset);
@ -1658,10 +1658,10 @@ struct dentry_t *get_entry_in_dir(struct super_block *sb, struct chain_t *p_dir,
buf = buf_getblk(sb, sec);
if (buf == NULL)
if (!buf)
return NULL;
if (sector != NULL)
if (sector)
*sector = sec;
return (struct dentry_t *)(buf + off);
}
@ -1721,7 +1721,7 @@ struct entry_set_cache_t *get_entry_set_in_dir(struct super_block *sb,
sec += START_SECTOR(clu);
buf = buf_getblk(sb, sec);
if (buf == NULL)
if (!buf)
goto err_out;
ep = (struct dentry_t *)(buf + off);
@ -1741,7 +1741,7 @@ struct entry_set_cache_t *get_entry_set_in_dir(struct super_block *sb,
pr_debug("%s: trying to kmalloc %zx bytes for %d entries\n", __func__,
bufsize, num_entries);
es = kmalloc(bufsize, GFP_KERNEL);
if (es == NULL)
if (!es)
goto err_out;
es->num_entries = num_entries;
@ -1820,7 +1820,7 @@ struct entry_set_cache_t *get_entry_set_in_dir(struct super_block *sb,
sec++;
}
buf = buf_getblk(sb, sec);
if (buf == NULL)
if (!buf)
goto err_out;
off = 0;
ep = (struct dentry_t *)(buf);
@ -1872,7 +1872,7 @@ static s32 __write_partial_entries_in_entry_set(struct super_block *sb,
remaining_byte_in_sector >> DENTRY_SIZE_BITS,
num_entries);
buf = buf_getblk(sb, sec);
if (buf == NULL)
if (!buf)
goto err_out;
pr_debug("es->buf %p buf_off %u\n", esbuf, buf_off);
pr_debug("copying %d entries from %p to sector %llu\n",
@ -2651,7 +2651,7 @@ void exfat_get_uni_name_from_ext_entry(struct super_block *sb,
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
es = get_entry_set_in_dir(sb, p_dir, entry, ES_ALL_ENTRIES, &ep);
if (es == NULL || es->num_entries < 3) {
if (!es || es->num_entries < 3) {
if (es)
release_entry_set(es);
return;

58
drivers/staging/exfat/exfat_super.c
View File

@ -341,7 +341,7 @@ static int exfat_cmpi(const struct dentry *dentry, unsigned int len,
alen = exfat_striptail_len(name);
blen = __exfat_striptail_len(len, str);
if (alen == blen) {
if (t == NULL) {
if (!t) {
if (strncasecmp(name->name, str, alen) == 0)
return 0;
} else {
@ -589,7 +589,7 @@ static int ffsGetVolInfo(struct super_block *sb, struct vol_info_t *info)
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
/* check the validity of pointer parameters */
if (info == NULL)
if (!info)
return FFS_ERROR;
/* acquire the lock for file system critical section */
@ -652,7 +652,7 @@ static int ffsLookupFile(struct inode *inode, char *path, struct file_id_t *fid)
pr_debug("%s entered\n", __func__);
/* check the validity of pointer parameters */
if ((fid == NULL) || (path == NULL) || (*path == '\0'))
if (!fid || !path || (*path == '\0'))
return FFS_ERROR;
/* acquire the lock for file system critical section */
@ -745,7 +745,7 @@ static int ffsCreateFile(struct inode *inode, char *path, u8 mode,
int ret;
/* check the validity of pointer parameters */
if ((fid == NULL) || (path == NULL) || (*path == '\0'))
if (!fid || !path || (*path == '\0'))
return FFS_ERROR;
/* acquire the lock for file system critical section */
@ -790,11 +790,11 @@ static int ffsReadFile(struct inode *inode, struct file_id_t *fid, void *buffer,
struct bd_info_t *p_bd = &(EXFAT_SB(sb)->bd_info);
/* check the validity of the given file id */
if (fid == NULL)
if (!fid)
return FFS_INVALIDFID;
/* check the validity of pointer parameters */
if (buffer == NULL)
if (!buffer)
return FFS_ERROR;
/* acquire the lock for file system critical section */
@ -813,7 +813,7 @@ static int ffsReadFile(struct inode *inode, struct file_id_t *fid, void *buffer,
count = fid->size - fid->rwoffset;
if (count == 0) {
if (rcount != NULL)
if (rcount)
*rcount = 0;
ret = FFS_EOF;
goto out;
@ -887,7 +887,7 @@ static int ffsReadFile(struct inode *inode, struct file_id_t *fid, void *buffer,
/* How did this ever work and not leak a brlse()?? */
err_out:
/* set the size of read bytes */
if (rcount != NULL)
if (rcount)
*rcount = read_bytes;
if (p_fs->dev_ejected)
@ -920,11 +920,11 @@ static int ffsWriteFile(struct inode *inode, struct file_id_t *fid,
struct bd_info_t *p_bd = &(EXFAT_SB(sb)->bd_info);
/* check the validity of the given file id */
if (fid == NULL)
if (!fid)
return FFS_INVALIDFID;
/* check the validity of pointer parameters */
if (buffer == NULL)
if (!buffer)
return FFS_ERROR;
/* acquire the lock for file system critical section */
@ -940,7 +940,7 @@ static int ffsWriteFile(struct inode *inode, struct file_id_t *fid,
fid->rwoffset = fid->size;
if (count == 0) {
if (wcount != NULL)
if (wcount)
*wcount = 0;
ret = FFS_SUCCESS;
goto out;
@ -1099,7 +1099,7 @@ static int ffsWriteFile(struct inode *inode, struct file_id_t *fid,
if (p_fs->vol_type == EXFAT) {
es = get_entry_set_in_dir(sb, &(fid->dir), fid->entry,
ES_ALL_ENTRIES, &ep);
if (es == NULL)
if (!es)
goto err_out;
ep2 = ep+1;
} else {
@ -1141,7 +1141,7 @@ static int ffsWriteFile(struct inode *inode, struct file_id_t *fid,
err_out:
/* set the size of written bytes */
if (wcount != NULL)
if (wcount)
*wcount = write_bytes;
if (num_alloced == 0)
@ -1228,7 +1228,7 @@ static int ffsTruncateFile(struct inode *inode, u64 old_size, u64 new_size)
if (p_fs->vol_type == EXFAT) {
es = get_entry_set_in_dir(sb, &fid->dir, fid->entry,
ES_ALL_ENTRIES, &ep);
if (es == NULL) {
if (!es) {
ret = FFS_MEDIAERR;
goto out;
}
@ -1323,11 +1323,11 @@ static int ffsMoveFile(struct inode *old_parent_inode, struct file_id_t *fid,
s32 new_entry = 0;
/* check the validity of the given file id */
if (fid == NULL)
if (!fid)
return FFS_INVALIDFID;
/* check the validity of pointer parameters */
if ((new_path == NULL) || (*new_path == '\0'))
if (!new_path || (*new_path == '\0'))
return FFS_ERROR;
/* acquire the lock for file system critical section */
@ -1444,7 +1444,7 @@ static int ffsRemoveFile(struct inode *inode, struct file_id_t *fid)
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
/* check the validity of the given file id */
if (fid == NULL)
if (!fid)
return FFS_INVALIDFID;
/* acquire the lock for file system critical section */
@ -1532,7 +1532,7 @@ static int ffsSetAttr(struct inode *inode, u32 attr)
if (p_fs->vol_type == EXFAT) {
es = get_entry_set_in_dir(sb, &(fid->dir), fid->entry,
ES_ALL_ENTRIES, &ep);
if (es == NULL) {
if (!es) {
ret = FFS_MEDIAERR;
goto out;
}
@ -1648,7 +1648,7 @@ static int ffsReadStat(struct inode *inode, struct dir_entry_t *info)
if (p_fs->vol_type == EXFAT) {
es = get_entry_set_in_dir(sb, &(fid->dir), fid->entry,
ES_2_ENTRIES, &ep);
if (es == NULL) {
if (!es) {
ret = FFS_MEDIAERR;
goto out;
}
@ -1772,7 +1772,7 @@ static int ffsWriteStat(struct inode *inode, struct dir_entry_t *info)
if (p_fs->vol_type == EXFAT) {
es = get_entry_set_in_dir(sb, &(fid->dir), fid->entry,
ES_ALL_ENTRIES, &ep);
if (es == NULL) {
if (!es) {
ret = FFS_MEDIAERR;
goto out;
}
@ -1842,7 +1842,7 @@ static int ffsMapCluster(struct inode *inode, s32 clu_offset, u32 *clu)
struct file_id_t *fid = &(EXFAT_I(inode)->fid);
/* check the validity of pointer parameters */
if (clu == NULL)
if (!clu)
return FFS_ERROR;
/* acquire the lock for file system critical section */
@ -1926,7 +1926,7 @@ static int ffsMapCluster(struct inode *inode, s32 clu_offset, u32 *clu)
if (p_fs->vol_type == EXFAT) {
es = get_entry_set_in_dir(sb, &fid->dir, fid->entry,
ES_ALL_ENTRIES, &ep);
if (es == NULL) {
if (!es) {
ret = FFS_MEDIAERR;
goto out;
}
@ -1994,7 +1994,7 @@ static int ffsCreateDir(struct inode *inode, char *path, struct file_id_t *fid)
pr_debug("%s entered\n", __func__);
/* check the validity of pointer parameters */
if ((fid == NULL) || (path == NULL) || (*path == '\0'))
if (!fid || !path || (*path == '\0'))
return FFS_ERROR;
/* acquire the lock for file system critical section */
@ -2040,7 +2040,7 @@ static int ffsReadDir(struct inode *inode, struct dir_entry_t *dir_entry)
struct file_id_t *fid = &(EXFAT_I(inode)->fid);
/* check the validity of pointer parameters */
if (dir_entry == NULL)
if (!dir_entry)
return FFS_ERROR;
/* check if the given file ID is opened */
@ -2231,7 +2231,7 @@ static int ffsRemoveDir(struct inode *inode, struct file_id_t *fid)
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
/* check the validity of the given file id */
if (fid == NULL)
if (!fid)
return FFS_INVALIDFID;
dir.dir = fid->dir.dir;
@ -3119,10 +3119,10 @@ static const char *exfat_get_link(struct dentry *dentry, struct inode *inode,
{
struct exfat_inode_info *ei = EXFAT_I(inode);
if (ei->target != NULL) {
if (ei->target) {
char *cookie = ei->target;
if (cookie != NULL)
if (cookie)
return (char *)(ei->target);
}
return NULL;
@ -3784,7 +3784,7 @@ static int parse_options(char *options, int silent, int *debug,
if (!options)
goto out;
while ((p = strsep(&options, ",")) != NULL) {
while ((p = strsep(&options, ","))) {
int token;
if (!*p)
@ -4048,7 +4048,7 @@ static int __init exfat_init_inodecache(void)
(SLAB_RECLAIM_ACCOUNT |
SLAB_MEM_SPREAD),
init_once);
if (exfat_inode_cachep == NULL)
if (!exfat_inode_cachep)
return -ENOMEM;
return 0;
}