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mtd: always initialize retlen to zero 

Make sure that the retlen is set to 0 in case of error. This harmonizes
drivers - some set it to 0 in some error cases and do not write anything
in other error cases. Now we can do this consistently for all drivers.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
Artem Bityutskiy 2011-12-28 18:14:49 +02:00 committed by David Woodhouse
parent bea7fe031e
commit 9cf075f865
1 changed files with 9 additions and 0 deletions
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9
include/linux/mtd/mtd.h
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@ -258,6 +258,7 @@ static inline int mtd_erase(struct mtd_info *mtd, struct erase_info *instr)
static inline int mtd_point(struct mtd_info *mtd, loff_t from, size_t len,
size_t *retlen, void **virt, resource_size_t *phys)
{
*retlen = 0;
return mtd->point(mtd, from, len, retlen, virt, phys);
}
@ -289,6 +290,7 @@ static inline int mtd_read(struct mtd_info *mtd, loff_t from, size_t len,
static inline int mtd_write(struct mtd_info *mtd, loff_t to, size_t len,
size_t *retlen, const u_char *buf)
{
*retlen = 0;
return mtd->write(mtd, to, len, retlen, buf);
}
@ -302,18 +304,21 @@ static inline int mtd_write(struct mtd_info *mtd, loff_t to, size_t len,
static inline int mtd_panic_write(struct mtd_info *mtd, loff_t to, size_t len,
size_t *retlen, const u_char *buf)
{
*retlen = 0;
return mtd->panic_write(mtd, to, len, retlen, buf);
}
static inline int mtd_read_oob(struct mtd_info *mtd, loff_t from,
struct mtd_oob_ops *ops)
{
ops->retlen = ops->oobretlen = 0;
return mtd->read_oob(mtd, from, ops);
}
static inline int mtd_write_oob(struct mtd_info *mtd, loff_t to,
struct mtd_oob_ops *ops)
{
ops->retlen = ops->oobretlen = 0;
return mtd->write_oob(mtd, to, ops);
}
@ -332,6 +337,7 @@ static inline int mtd_read_fact_prot_reg(struct mtd_info *mtd, loff_t from,
size_t len, size_t *retlen,
u_char *buf)
{
*retlen = 0;
return mtd->read_fact_prot_reg(mtd, from, len, retlen, buf);
}
@ -346,6 +352,7 @@ static inline int mtd_read_user_prot_reg(struct mtd_info *mtd, loff_t from,
size_t len, size_t *retlen,
u_char *buf)
{
*retlen = 0;
return mtd->read_user_prot_reg(mtd, from, len, retlen, buf);
}
@ -353,6 +360,7 @@ static inline int mtd_write_user_prot_reg(struct mtd_info *mtd, loff_t to,
size_t len, size_t *retlen,
u_char *buf)
{
*retlen = 0;
return mtd->write_user_prot_reg(mtd, to, len, retlen, buf);
}
@ -369,6 +377,7 @@ static inline int mtd_lock_user_prot_reg(struct mtd_info *mtd, loff_t from,
static inline int mtd_writev(struct mtd_info *mtd, const struct kvec *vecs,
unsigned long count, loff_t to, size_t *retlen)
{
*retlen = 0;
return mtd->writev(mtd, vecs, count, to, retlen);
}