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mtd: Add a retlen parameter to _get_{fact,user}_prot_info

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Signed-off-by: Christian Riesch <christian.riesch@omicron.at>
Cc: Artem Bityutskiy <Artem.Bityutskiy@linux.intel.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
This commit is contained in:
Christian Riesch
2014-01-28 09:29:44 +01:00
committed by Brian Norris
parent 41bf1a24c1
commit 4b78fc42f3
7 changed files with 57 additions and 64 deletions
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11
drivers/mtd/mtdchar.c
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@@ -889,25 +889,26 @@ static int mtdchar_ioctl(struct file *file, u_int cmd, u_long arg)
case OTPGETREGIONINFO:
{
struct otp_info *buf = kmalloc(4096, GFP_KERNEL);
size_t retlen;
if (!buf)
return -ENOMEM;
switch (mfi->mode) {
case MTD_FILE_MODE_OTP_FACTORY:
ret = mtd_get_fact_prot_info(mtd, buf, 4096);
ret = mtd_get_fact_prot_info(mtd, 4096, &retlen, buf);
break;
case MTD_FILE_MODE_OTP_USER:
ret = mtd_get_user_prot_info(mtd, buf, 4096);
ret = mtd_get_user_prot_info(mtd, 4096, &retlen, buf);
break;
default:
ret = -EINVAL;
break;
}
if (ret >= 0) {
if (!ret) {
if (cmd == OTPGETREGIONCOUNT) {
int nbr = ret / sizeof(struct otp_info);
int nbr = retlen / sizeof(struct otp_info);
ret = copy_to_user(argp, &nbr, sizeof(int));
} else
ret = copy_to_user(argp, buf, ret);
ret = copy_to_user(argp, buf, retlen);
if (ret)
ret = -EFAULT;
}