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Diffstat (limited to 'drivers/mtd/mtdcore.c')
-rw-r--r--drivers/mtd/mtdcore.c39
1 files changed, 18 insertions, 21 deletions
diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c
index e4831b4159d..4c611871d7e 100644
--- a/drivers/mtd/mtdcore.c
+++ b/drivers/mtd/mtdcore.c
@@ -105,12 +105,11 @@ static LIST_HEAD(mtd_notifiers);
*/
static void mtd_release(struct device *dev)
{
- struct mtd_info __maybe_unused *mtd = dev_get_drvdata(dev);
+ struct mtd_info *mtd = dev_get_drvdata(dev);
dev_t index = MTD_DEVT(mtd->index);
- /* remove /dev/mtdXro node if needed */
- if (index)
- device_destroy(&mtd_class, index + 1);
+ /* remove /dev/mtdXro node */
+ device_destroy(&mtd_class, index + 1);
}
static int mtd_cls_suspend(struct device *dev, pm_message_t state)
@@ -442,10 +441,8 @@ int add_mtd_device(struct mtd_info *mtd)
if (device_register(&mtd->dev) != 0)
goto fail_added;
- if (MTD_DEVT(i))
- device_create(&mtd_class, mtd->dev.parent,
- MTD_DEVT(i) + 1,
- NULL, "mtd%dro", i);
+ device_create(&mtd_class, mtd->dev.parent, MTD_DEVT(i) + 1, NULL,
+ "mtd%dro", i);
pr_debug("mtd: Giving out device %d to %s\n", i, mtd->name);
/* No need to get a refcount on the module containing
@@ -778,7 +775,7 @@ EXPORT_SYMBOL_GPL(__put_mtd_device);
*/
int mtd_erase(struct mtd_info *mtd, struct erase_info *instr)
{
- if (instr->addr > mtd->size || instr->len > mtd->size - instr->addr)
+ if (instr->addr >= mtd->size || instr->len > mtd->size - instr->addr)
return -EINVAL;
if (!(mtd->flags & MTD_WRITEABLE))
return -EROFS;
@@ -804,7 +801,7 @@ int mtd_point(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen,
*phys = 0;
if (!mtd->_point)
return -EOPNOTSUPP;
- if (from < 0 || from > mtd->size || len > mtd->size - from)
+ if (from < 0 || from >= mtd->size || len > mtd->size - from)
return -EINVAL;
if (!len)
return 0;
@@ -817,7 +814,7 @@ int mtd_unpoint(struct mtd_info *mtd, loff_t from, size_t len)
{
if (!mtd->_point)
return -EOPNOTSUPP;
- if (from < 0 || from > mtd->size || len > mtd->size - from)
+ if (from < 0 || from >= mtd->size || len > mtd->size - from)
return -EINVAL;
if (!len)
return 0;
@@ -835,7 +832,7 @@ unsigned long mtd_get_unmapped_area(struct mtd_info *mtd, unsigned long len,
{
if (!mtd->_get_unmapped_area)
return -EOPNOTSUPP;
- if (offset > mtd->size || len > mtd->size - offset)
+ if (offset >= mtd->size || len > mtd->size - offset)
return -EINVAL;
return mtd->_get_unmapped_area(mtd, len, offset, flags);
}
@@ -846,7 +843,7 @@ int mtd_read(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen,
{
int ret_code;
*retlen = 0;
- if (from < 0 || from > mtd->size || len > mtd->size - from)
+ if (from < 0 || from >= mtd->size || len > mtd->size - from)
return -EINVAL;
if (!len)
return 0;
@@ -869,7 +866,7 @@ int mtd_write(struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen,
const u_char *buf)
{
*retlen = 0;
- if (to < 0 || to > mtd->size || len > mtd->size - to)
+ if (to < 0 || to >= mtd->size || len > mtd->size - to)
return -EINVAL;
if (!mtd->_write || !(mtd->flags & MTD_WRITEABLE))
return -EROFS;
@@ -892,7 +889,7 @@ int mtd_panic_write(struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen,
*retlen = 0;
if (!mtd->_panic_write)
return -EOPNOTSUPP;
- if (to < 0 || to > mtd->size || len > mtd->size - to)
+ if (to < 0 || to >= mtd->size || len > mtd->size - to)
return -EINVAL;
if (!(mtd->flags & MTD_WRITEABLE))
return -EROFS;
@@ -1011,7 +1008,7 @@ int mtd_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
{
if (!mtd->_lock)
return -EOPNOTSUPP;
- if (ofs < 0 || ofs > mtd->size || len > mtd->size - ofs)
+ if (ofs < 0 || ofs >= mtd->size || len > mtd->size - ofs)
return -EINVAL;
if (!len)
return 0;
@@ -1023,7 +1020,7 @@ int mtd_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
{
if (!mtd->_unlock)
return -EOPNOTSUPP;
- if (ofs < 0 || ofs > mtd->size || len > mtd->size - ofs)
+ if (ofs < 0 || ofs >= mtd->size || len > mtd->size - ofs)
return -EINVAL;
if (!len)
return 0;
@@ -1035,7 +1032,7 @@ int mtd_is_locked(struct mtd_info *mtd, loff_t ofs, uint64_t len)
{
if (!mtd->_is_locked)
return -EOPNOTSUPP;
- if (ofs < 0 || ofs > mtd->size || len > mtd->size - ofs)
+ if (ofs < 0 || ofs >= mtd->size || len > mtd->size - ofs)
return -EINVAL;
if (!len)
return 0;
@@ -1045,7 +1042,7 @@ EXPORT_SYMBOL_GPL(mtd_is_locked);
int mtd_block_isreserved(struct mtd_info *mtd, loff_t ofs)
{
- if (ofs < 0 || ofs > mtd->size)
+ if (ofs < 0 || ofs >= mtd->size)
return -EINVAL;
if (!mtd->_block_isreserved)
return 0;
@@ -1055,7 +1052,7 @@ EXPORT_SYMBOL_GPL(mtd_block_isreserved);
int mtd_block_isbad(struct mtd_info *mtd, loff_t ofs)
{
- if (ofs < 0 || ofs > mtd->size)
+ if (ofs < 0 || ofs >= mtd->size)
return -EINVAL;
if (!mtd->_block_isbad)
return 0;
@@ -1067,7 +1064,7 @@ int mtd_block_markbad(struct mtd_info *mtd, loff_t ofs)
{
if (!mtd->_block_markbad)
return -EOPNOTSUPP;
- if (ofs < 0 || ofs > mtd->size)
+ if (ofs < 0 || ofs >= mtd->size)
return -EINVAL;
if (!(mtd->flags & MTD_WRITEABLE))
return -EROFS;