From nobody Sun Feb 8 02:22:03 2026 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A258E13CC5E; Wed, 27 Mar 2024 12:22:39 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711542159; cv=none; b=aTdoDQcATVep9Gr9hlvb5fpqPNudu6VKPBkE4FDDedKJbGDVYIY6xKTdV9T7kb2nGYcAOUmMmD90UxNIa83YQlDH/bSrzk+Keyd7V1O9bcjoOavdrmV4LmVSQKb64IfT4j2l/67mnsBRxg7fx+GdIhEOGOexorcfT63tWiwfZsA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711542159; c=relaxed/simple; bh=Sppc5VypHt6W6Z9Q/k/sDN/nPBoSXWdAwU/zkXK2IWM=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=QQbF8TI0BxqO9uKAIt1IRXjp8GwYcgn7ptmUndXJSQhsJuDtL32fBJfi+b0hP0WrngHLKXWDgddERgbhqG6Lk4AFuxVTNypEujk6qpzpJTG2M4tj+A5UOYask+3f7YDv9XWgpqYrgl6Y/t4YZXbSbfGk23q9JAjI/qcFWXNQLMk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=YRWwQfFi; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="YRWwQfFi" Received: by smtp.kernel.org (Postfix) with ESMTPSA id EC182C433F1; Wed, 27 Mar 2024 12:22:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1711542159; bh=Sppc5VypHt6W6Z9Q/k/sDN/nPBoSXWdAwU/zkXK2IWM=; h=From:To:Cc:Subject:Date:From; b=YRWwQfFiZtZAgvfpTUSU3b8mHbjLWVocmm+tLEMIaJ/48nyFh6gAZCmNAt3w5DTeX E46RH7YLDdoJVtkLEIkb/bf5+E6SRqaQZvSiI9upJ57o202fnQev6R490/oIb/xSf9 nryVBkH3zyKiM81s1UQwJMLG6PNXI1wijBWYazGkWF7bKg2IRXOHNObn6Y8vTA/jeB pTanWWcDIMvwsuFqj2m/MMVftsoOJNJgixfvQu7e9q9TqJkYNsIo128X8Sfh6WmN0l Zt2LBfAx/b6+PBDZsbrHvA4gQDInE3Nz2ixjXdaMK1hPN2GogB+aq5WBLDKH8oSVuW WmkM9iLNZfYFA== From: Sasha Levin To: stable@vger.kernel.org, srinivasan.shanmugam@amd.com Cc: Jerry Zuo , Jun Lei , Wayne Lin , Aurabindo Pillai , Rodrigo Siqueira , Hamza Mahfooz , Alex Deucher , amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Subject: FAILED: Patch "drm/amd/display: Fix uninitialized variable usage in core_link_ 'read_dpcd() & write_dpcd()' functions" failed to apply to 5.4-stable tree Date: Wed, 27 Mar 2024 08:22:36 -0400 Message-ID: <20240327122237.2837860-1-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Patchwork-Hint: ignore X-stable: review Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" The patch below does not apply to the 5.4-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to . Thanks, Sasha Reviewed-by: Rodrigo Siqueira ------------------ original commit in Linus's tree ------------------ From 3295580d4683bdc56c0662b4a4834f597baceadc Mon Sep 17 00:00:00 2001 From: Srinivasan Shanmugam Date: Wed, 17 Jan 2024 08:41:52 +0530 Subject: [PATCH] drm/amd/display: Fix uninitialized variable usage in core_link_ 'read_dpcd() & write_dpcd()' functions The 'status' variable in 'core_link_read_dpcd()' & 'core_link_write_dpcd()' was uninitialized. Thus, initializing 'status' variable to 'DC_ERROR_UNEXPECTED' by default. Fixes the below: drivers/gpu/drm/amd/amdgpu/../display/dc/link/protocols/link_dpcd.c:226 cor= e_link_read_dpcd() error: uninitialized symbol 'status'. drivers/gpu/drm/amd/amdgpu/../display/dc/link/protocols/link_dpcd.c:248 cor= e_link_write_dpcd() error: uninitialized symbol 'status'. Cc: stable@vger.kernel.org Cc: Jerry Zuo Cc: Jun Lei Cc: Wayne Lin Cc: Aurabindo Pillai Cc: Rodrigo Siqueira Cc: Hamza Mahfooz Signed-off-by: Srinivasan Shanmugam Reviewed-by: Rodrigo Siqueira Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/dc/link/protocols/link_dpcd.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/amd/display/dc/link/protocols/link_dpcd.c b/dr= ivers/gpu/drm/amd/display/dc/link/protocols/link_dpcd.c index 5c9a30211c109..fc50931c2aecb 100644 --- a/drivers/gpu/drm/amd/display/dc/link/protocols/link_dpcd.c +++ b/drivers/gpu/drm/amd/display/dc/link/protocols/link_dpcd.c @@ -205,7 +205,7 @@ enum dc_status core_link_read_dpcd( uint32_t extended_size; /* size of the remaining partitioned address space */ uint32_t size_left_to_read; - enum dc_status status; + enum dc_status status =3D DC_ERROR_UNEXPECTED; /* size of the next partition to be read from */ uint32_t partition_size; uint32_t data_index =3D 0; @@ -234,7 +234,7 @@ enum dc_status core_link_write_dpcd( { uint32_t partition_size; uint32_t data_index =3D 0; - enum dc_status status; + enum dc_status status =3D DC_ERROR_UNEXPECTED; =20 while (size) { partition_size =3D dpcd_get_next_partition_size(address, size); --=20 2.43.0