[MTD] Disconnect struct mtd_info from ABI
mtdchar.c direcly copied part of struct mtd_info to userspace, thereby
implicitly making it part of the ABI. With this patch, struct
mtd_info is independent of the ABI and can have its fields removed,
reordered, etc.
Signed-off-by: Joern Engel <joern@wh.fh-wedel.de>
diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c
index fdc535b..5dd0b8d 100644
--- a/drivers/mtd/mtdchar.c
+++ b/drivers/mtd/mtdchar.c
@@ -380,6 +380,7 @@
void __user *argp = (void __user *)arg;
int ret = 0;
u_long size;
+ struct mtd_info_user info;
DEBUG(MTD_DEBUG_LEVEL0, "MTD_ioctl\n");
@@ -415,7 +416,15 @@
}
case MEMGETINFO:
- if (copy_to_user(argp, mtd, sizeof(struct mtd_info_user)))
+ info.type = mtd->type;
+ info.flags = mtd->flags;
+ info.size = mtd->size;
+ info.erasesize = mtd->erasesize;
+ info.writesize = mtd->writesize;
+ info.oobsize = mtd->oobsize;
+ info.ecctype = mtd->ecctype;
+ info.eccsize = mtd->eccsize;
+ if (copy_to_user(argp, &info, sizeof(struct mtd_info_user)))
return -EFAULT;
break;