linux-kernel - [PATCH linux-next] drm/i915: Remove redundant assignments

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Date:   Mon, 18 Oct 2021 09:09:55 +0000
From:   luo penghao <cgel.zte@...il.com>
To:     Jani Nikula <jani.nikula@...ux.intel.com>
Cc:     Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Stephen Rothwell <sfr@...b.auug.org.au>,
        intel-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org, penghao luo <luo.penghao@....com.cn>,
        Zeal Robot <zealci@....com.cn>
Subject: [PATCH linux-next] drm/i915: Remove redundant assignments

From: penghao luo <luo.penghao@....com.cn>

The assignment of variables will be overwritten later, so the
assignment here is meaningless.

The clang_analyzer complains as follows:

drivers/gpu/drm/i915/gem/i915_gem_userptr.c:291: warning:

Although the value stored to 'ret' is used in the enclosing expression,
the value is never actually read from 'retâ€™.

Reported-by: Zeal Robot <zealci@....com.cn>
Signed-off-by: penghao luo <luo.penghao@....com.cn>
---
 drivers/gpu/drm/i915/gem/i915_gem_userptr.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/gem/i915_gem_userptr.c b/drivers/gpu/drm/i915/gem/i915_gem_userptr.c
index 8ea0fa6..f6f944d 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_userptr.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_userptr.c
@@ -288,7 +288,7 @@ int i915_gem_object_userptr_submit_init(struct drm_i915_gem_object *obj)
 	if (!i915_gem_object_is_readonly(obj))
 		gup_flags |= FOLL_WRITE;
 
-	pinned = ret = 0;
+	pinned = 0;
 	while (pinned < num_pages) {
 		ret = pin_user_pages_fast(obj->userptr.ptr + pinned * PAGE_SIZE,
 					  num_pages - pinned, gup_flags,
-- 
2.15.2