From: Al Viro <viro@zeniv.linux.org.uk>
Date: Sat, 25 Apr 2020 17:13:48 +0000 (-0400)
Subject: i915:get_engines(): get rid of pointless access_ok()
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=7b3f0c4c56b08a86f890cad3599242c78c683aa9;p=linux.git

i915:get_engines(): get rid of pointless access_ok()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---

diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c b/drivers/gpu/drm/i915/gem/i915_gem_context.c
index 68326ad3b2e09..55cb6dbfe61f2 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c
@@ -1924,11 +1924,6 @@ get_engines(struct i915_gem_context *ctx,
 	}
 
 	user = u64_to_user_ptr(args->value);
-	if (!access_ok(user, size)) {
-		err = -EFAULT;
-		goto err_free;
-	}
-
 	if (put_user(0, &user->extensions)) {
 		err = -EFAULT;
 		goto err_free;