From patchwork Fri Oct 7 19:47:45 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Colin Ian King X-Patchwork-Id: 13001431 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 40DABC433FE for ; Fri, 7 Oct 2022 19:47:55 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 134F710E0CC; Fri, 7 Oct 2022 19:47:53 +0000 (UTC) Received: from mail-wm1-x335.google.com (mail-wm1-x335.google.com [IPv6:2a00:1450:4864:20::335]) by gabe.freedesktop.org (Postfix) with ESMTPS id CAE4810E0C9; Fri, 7 Oct 2022 19:47:48 +0000 (UTC) Received: by mail-wm1-x335.google.com with SMTP id o5so3489136wms.1; Fri, 07 Oct 2022 12:47:48 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=aQIAtfxw9qFz9Hl/XRNhdWvv/WP4PsamsNA94vPOScw=; b=CWEz1G2S7PpTw3YqmzToiMwiNbuD1Drf7WmIgIG8V7JJvKYsk/ZIOpnPDfjkqNtj4u x30Wo/rBxvwnjxsrYw4VshH3VQRaJNJBS9dwf2gCSam8zVwT0x57jLY0PkzPhtjRvgru yS4DFP4pSMkpeCuO9D5YZWKbdxEPxQ7p8LzZEf5/CVfFcZeDkP+bz6t9Ne7SGq+his84 FbyRlu5tBAMBVqeBr2ppFUJmG+9yQMlSq0OJ8QiwrN6HLr5Q55oU0RnQFjnA7qLh7PMq udmzxQlqNKIaMlrC1eUYEpZsqX8u/rhlv+eTU/IyYY9xZmwr1rYWaF7ZqOk8eSiOY4lC qaXg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=aQIAtfxw9qFz9Hl/XRNhdWvv/WP4PsamsNA94vPOScw=; b=xEab4Wz+XiNYFsbgrYylB41sCpNZaQItM1Ct5j8g3FjbI2fz3owSVjyBcICAusMgJH jVb7wt8nLbHKiMHGARTtj2Vdd/zCr4UHgNeekWLltUcuTiiF4dZYuTRQ3tgn/NaoiYdZ BdioGgvNAFKPGT7fkAAoX+y8Z8VDPSUd/uct3saRkIpE4HIe/2z5KWEI5ufGVQ/G8ScT JliI7nHO8yA3GCk71Ldg2vE+QsvbFWSVxXwqlVrDZ6i4x7XC7JPyrBmvEz/tFafV+5wu 1YM+Jqs82k7ps17+xVQjT12dn9G/UmAZImNw9u2jHeKjokGuAkL8+reOyU3aTn4djCh+ VW/w== X-Gm-Message-State: ACrzQf1Nb54qvRaiE5s7voHJXhwTmpjyyMhnE9XAu93ITTOXHdfq1oL0 7WoUKtL1HGHJCndRkPr2U44= X-Google-Smtp-Source: AMsMyM7/YTveBhPU+ZlmzDgp++oNS+vvRqhX5gWak6BuDVO4QseTU9T6OaWBOMN9HuEbtuNn71dvDw== X-Received: by 2002:a05:600c:4ed3:b0:3b4:ade9:ecf0 with SMTP id g19-20020a05600c4ed300b003b4ade9ecf0mr11769784wmq.46.1665172066974; Fri, 07 Oct 2022 12:47:46 -0700 (PDT) Received: from localhost (cpc154979-craw9-2-0-cust193.16-3.cable.virginm.net. [80.193.200.194]) by smtp.gmail.com with ESMTPSA id e17-20020adfdbd1000000b0022ae59d472esm2705304wrj.112.2022.10.07.12.47.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 07 Oct 2022 12:47:46 -0700 (PDT) From: Colin Ian King To: Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , Tvrtko Ursulin , David Airlie , Daniel Vetter , intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH] drm/i915/gem: remove redundant assignments to variable ret Date: Fri, 7 Oct 2022 20:47:45 +0100 Message-Id: <20221007194745.2749277-1-colin.i.king@gmail.com> X-Mailer: git-send-email 2.37.3 MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kernel-janitors@vger.kernel.org, linux-kernel@vger.kernel.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" The variable ret is being assigned with a value that is never read both before and after a while-loop. The variable is being re-assigned inside the while-loop and afterwards on the call to the function i915_gem_object_lock_interruptible. Remove the redundants assignments. Cleans up clang scan-build warnings: warning: Although the value stored to 'ret' is used in the enclosing expression, the value is never actually read from 'ret' [deadcode.DeadStores] warning: Value stored to 'ret' is never read [deadcode.DeadStores] Signed-off-by: Colin Ian King Reviewed-by: Tvrtko Ursulin --- drivers/gpu/drm/i915/gem/i915_gem_userptr.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/gem/i915_gem_userptr.c b/drivers/gpu/drm/i915/gem/i915_gem_userptr.c index d4398948f016..b7e24476a0fd 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_userptr.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_userptr.c @@ -292,7 +292,7 @@ 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, @@ -302,7 +302,6 @@ int i915_gem_object_userptr_submit_init(struct drm_i915_gem_object *obj) pinned += ret; } - ret = 0; ret = i915_gem_object_lock_interruptible(obj, NULL); if (ret)