From: Yann Droneaud <ydroneaud@opteya.com>
Date: Wed, 11 Dec 2013 22:01:44 +0000 (+0100)
Subject: IB/core: const'ify inbuf in struct ib_udata
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=309243ec14fde1149e1c66f19746e239e86caf39;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

IB/core: const'ify inbuf in struct ib_udata

Userspace input buffer is not modified by kernel, so it can be 'const'.

This is also a prerequisite to remove the implicit cast
from INIT_UDATA().

Link: http://marc.info/?i=cover.1386798254.git.ydroneaud@opteya.com>
Signed-off-by: Yann Droneaud <ydroneaud@opteya.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
---

diff --git a/drivers/infiniband/core/uverbs.h b/drivers/infiniband/core/uverbs.h
index bdc842e9faef..9879568aed8c 100644
--- a/drivers/infiniband/core/uverbs.h
+++ b/drivers/infiniband/core/uverbs.h
@@ -49,7 +49,7 @@
 
 #define INIT_UDATA(udata, ibuf, obuf, ilen, olen)			\
 	do {								\
-		(udata)->inbuf  = (void __user *) (ibuf);		\
+		(udata)->inbuf  = (const void __user *) (ibuf);		\
 		(udata)->outbuf = (void __user *) (obuf);		\
 		(udata)->inlen  = (ilen);				\
 		(udata)->outlen = (olen);				\
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index 979874c627ee..61e1935c91b1 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -978,7 +978,7 @@ struct ib_uobject {
 };
 
 struct ib_udata {
-	void __user *inbuf;
+	const void __user *inbuf;
 	void __user *outbuf;
 	size_t       inlen;
 	size_t       outlen;