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mtd: do not use mtd->get_*_prot_info directly

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Instead, call 'mtd_get_*_prot_info()' and check for '-EOPNOTSUPP'. While
on it, fix the return code from '-EOPNOTSUPP' to '-EINVAL' for the case
when the mode parameter is invalid.

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 18:47:46 +02:00 committed by David Woodhouse
parent dac2639f98
commit 87e858a97e
2 changed files with 7 additions and 5 deletions
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8
drivers/mtd/mtdchar.c
View File

@ -919,17 +919,15 @@ static int mtdchar_ioctl(struct file *file, u_int cmd, u_long arg)
struct otp_info *buf = kmalloc(4096, GFP_KERNEL);
if (!buf)
return -ENOMEM;
ret = -EOPNOTSUPP;
switch (mfi->mode) {
case MTD_FILE_MODE_OTP_FACTORY:
if (mtd->get_fact_prot_info)
ret = mtd_get_fact_prot_info(mtd, buf, 4096);
ret = mtd_get_fact_prot_info(mtd, buf, 4096);
break;
case MTD_FILE_MODE_OTP_USER:
if (mtd->get_user_prot_info)
ret = mtd_get_user_prot_info(mtd, buf, 4096);
ret = mtd_get_user_prot_info(mtd, buf, 4096);
break;
default:
ret = -EINVAL;
break;
}
if (ret >= 0) {

4
include/linux/mtd/mtd.h
View File

@ -342,6 +342,8 @@ static inline int mtd_write_oob(struct mtd_info *mtd, loff_t to,
static inline int mtd_get_fact_prot_info(struct mtd_info *mtd,
struct otp_info *buf, size_t len)
{
if (!mtd->get_fact_prot_info)
return -EOPNOTSUPP;
return mtd->get_fact_prot_info(mtd, buf, len);
}
@ -357,6 +359,8 @@ static inline int mtd_get_user_prot_info(struct mtd_info *mtd,
struct otp_info *buf,
size_t len)
{
if (!mtd->get_user_prot_info)
return -EOPNOTSUPP;
return mtd->get_user_prot_info(mtd, buf, len);
}