From patchwork Tue Mar 28 14:43:41 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 13191190 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 5707EC77B61 for ; Tue, 28 Mar 2023 15:12:12 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id B03B910E0F1; Tue, 28 Mar 2023 15:12:11 +0000 (UTC) Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by gabe.freedesktop.org (Postfix) with ESMTPS id 75EB610E0F1 for ; Tue, 28 Mar 2023 15:12:08 +0000 (UTC) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 1F382B81D77; Tue, 28 Mar 2023 15:12:07 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 584F1C433EF; Tue, 28 Mar 2023 15:12:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1680016325; bh=dU4cXv3GN5nyO7RK1N6UM13F/DcpChRh/3UE/JMFQWw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=UT8zNHOW9W58in444r0YNAMHXT/mBiMs3+M5oScFsj/czBV2H4b2TjpVpHSk0UpFA yVKC4oapnLVW/+yRiJS+ETZT3//Ele2zuJnLekNhW3x0gGP4Nobzklbc+5q/r9O4bg 2hN7zmoDRX9/ar//Ga4UlPPK23xKyvLyEuaL5t2s= From: Greg Kroah-Hartman To: stable@vger.kernel.org Date: Tue, 28 Mar 2023 16:43:41 +0200 Message-Id: <20230328142608.175023979@linuxfoundation.org> X-Mailer: git-send-email 2.40.0 In-Reply-To: <20230328142602.660084725@linuxfoundation.org> References: <20230328142602.660084725@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH 5.15 132/146] drm/i915/active: Fix missing debug object activation X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Andrzej Hajda , Jani Nikula , Greg Kroah-Hartman , intel-gfx@lists.freedesktop.org, patches@lists.linux.dev, Chris Wilson , =?utf-8?q?Thomas_Hellstr=C3=B6m?= , Nirmoy Das Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" From: Nirmoy Das commit e92eb246feb9019b0b137706c934b8891cdfe3c2 upstream. debug_active_activate() expected ref->count to be zero which is not true anymore as __i915_active_activate() calls debug_active_activate() after incrementing the count. v2: No need to check for "ref->count == 1" as __i915_active_activate() already make sure of that(Janusz). Fixes: 04240e30ed06 ("drm/i915: Skip taking acquire mutex for no ref->active callback") Cc: Chris Wilson Cc: Tvrtko Ursulin Cc: Thomas Hellström Cc: Andi Shyti Cc: intel-gfx@lists.freedesktop.org Cc: Janusz Krzysztofik Cc: # v5.10+ Signed-off-by: Nirmoy Das Reviewed-by: Janusz Krzysztofik Reviewed-by: Andrzej Hajda Link: https://patchwork.freedesktop.org/patch/msgid/20230313114613.9874-1-nirmoy.das@intel.com (cherry picked from commit bfad380c542438a9b642f8190b7fd37bc77e2723) Signed-off-by: Jani Nikula Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/i915/i915_active.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) --- a/drivers/gpu/drm/i915/i915_active.c +++ b/drivers/gpu/drm/i915/i915_active.c @@ -92,8 +92,7 @@ static void debug_active_init(struct i91 static void debug_active_activate(struct i915_active *ref) { lockdep_assert_held(&ref->tree_lock); - if (!atomic_read(&ref->count)) /* before the first inc */ - debug_object_activate(ref, &active_debug_desc); + debug_object_activate(ref, &active_debug_desc); } static void debug_active_deactivate(struct i915_active *ref)