extra is in kernel space replace copy_from_user with
memcpy with no need to error check.
We already know that extra is valid by error checking
on wrq->length.
sparse warning
iwctl.c:1567:53: warning: incorrect type in argument 2 (different address spaces)
iwctl.c:1567:53: expected void const [noderef] <asn:1>*from
iwctl.c:1567:53: got char *extra
Signed-off-by: Malcolm Priestley <tvboxspy@xxxxxxxxx>
---
drivers/staging/vt6656/iwctl.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/drivers/staging/vt6656/iwctl.c b/drivers/staging/vt6656/iwctl.c
index 058df65..bf56877 100644
--- a/drivers/staging/vt6656/iwctl.c
+++ b/drivers/staging/vt6656/iwctl.c
@@ -1564,10 +1564,8 @@ int iwctl_siwgenie(struct net_device *dev, struct iw_request_info *info,
goto out;
}
memset(pMgmt->abyWPAIE, 0, MAX_WPA_IE_LEN);
- if (copy_from_user(pMgmt->abyWPAIE, extra, wrq->length)) {
- ret = -EFAULT;
- goto out;
- }
+
+ memcpy(pMgmt->abyWPAIE, extra, wrq->length);
pMgmt->wWPAIELen = wrq->length;
} else {
memset(pMgmt->abyWPAIE, 0, MAX_WPA_IE_LEN);
--
1.8.5.2
--
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