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path: root/drivers/mtd
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Diffstat (limited to 'drivers/mtd')
-rw-r--r--drivers/mtd/mtdchar.c29
1 files changed, 21 insertions, 8 deletions
diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c
index 763d3f0a1f4..ad4b8618977 100644
--- a/drivers/mtd/mtdchar.c
+++ b/drivers/mtd/mtdchar.c
@@ -417,6 +417,7 @@ static int mtd_ioctl(struct inode *inode, struct file *file,
break;
case MEMERASE:
+ case MEMERASE64:
{
struct erase_info *erase;
@@ -427,20 +428,32 @@ static int mtd_ioctl(struct inode *inode, struct file *file,
if (!erase)
ret = -ENOMEM;
else {
- struct erase_info_user einfo;
-
wait_queue_head_t waitq;
DECLARE_WAITQUEUE(wait, current);
init_waitqueue_head(&waitq);
- if (copy_from_user(&einfo, argp,
- sizeof(struct erase_info_user))) {
- kfree(erase);
- return -EFAULT;
+ if (cmd == MEMERASE64) {
+ struct erase_info_user64 einfo64;
+
+ if (copy_from_user(&einfo64, argp,
+ sizeof(struct erase_info_user64))) {
+ kfree(erase);
+ return -EFAULT;
+ }
+ erase->addr = einfo64.start;
+ erase->len = einfo64.length;
+ } else {
+ struct erase_info_user einfo32;
+
+ if (copy_from_user(&einfo32, argp,
+ sizeof(struct erase_info_user))) {
+ kfree(erase);
+ return -EFAULT;
+ }
+ erase->addr = einfo32.start;
+ erase->len = einfo32.length;
}
- erase->addr = einfo.start;
- erase->len = einfo.length;
erase->mtd = mtd;
erase->callback = mtdchar_erase_callback;
erase->priv = (unsigned long)&waitq;