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[24.205.208.113]) by smtp.gmail.com with ESMTPSA id p141-20020a374293000000b0074de75f783fsm3757258qka.26.2023.04.24.11.14.11 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 24 Apr 2023 11:14:14 -0700 (PDT) Message-ID: <4ca4e590-a996-81ad-e088-d172f5a5a8ba@redhat.com> Date: Mon, 24 Apr 2023 11:14:10 -0700 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:102.0) Gecko/20100101 Thunderbird/102.10.0 Subject: Re: [PATCH] drm/amd/display: return status of dmub_srv_get_fw_boot_status To: Hamza Mahfooz , harry.wentland@amd.com, sunpeng.li@amd.com, Rodrigo.Siqueira@amd.com, alexander.deucher@amd.com, christian.koenig@amd.com, Xinhui.Pan@amd.com, airlied@gmail.com, daniel@ffwll.ch, Alvin.Lee2@amd.com, Jun.Lei@amd.com, qingqing.zhuo@amd.com, Max.Tseng@amd.com, Josip.Pavic@amd.com, Eric.Yang2@amd.com, aurabindo.pillai@amd.com References: <20230420135901.3889747-1-trix@redhat.com> <9910a5e3-a161-edfa-19d4-2bbf3bbf405f@amd.com> From: Tom Rix In-Reply-To: <9910a5e3-a161-edfa-19d4-2bbf3bbf405f@amd.com> X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Mailman-Approved-At: Mon, 24 Apr 2023 18:22:16 +0000 X-BeenThere: amd-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Discussion list for AMD gfx List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Errors-To: amd-gfx-bounces@lists.freedesktop.org Sender: "amd-gfx" On 4/24/23 10:02 AM, Hamza Mahfooz wrote: > > On 4/20/23 09:59, Tom Rix wrote: >> gcc with W=1 reports >> drivers/gpu/drm/amd/amdgpu/../display/dc/dc_dmub_srv.c: >>    In function ‘dc_dmub_srv_optimized_init_done’: >> drivers/gpu/drm/amd/amdgpu/../display/dc/dc_dmub_srv.c:184:26: >>    error: variable ‘dmub’ set but not used >> [-Werror=unused-but-set-variable] >>    184 |         struct dmub_srv *dmub; >>        |                          ^~~~ >> >> The return status is never set. >> It looks like a call to dmub_srv_get_fw_boot_status is missing. >> >> Fixes: 499e4b1c722e ("drm/amd/display: add mechanism to skip DCN init") > > What tree is this based on? I am unable to find that exact commit on > amd-staging-drm-next. linux-next Tom > >> Signed-off-by: Tom Rix >> --- >>   drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c | 13 +++++++++++-- >>   1 file changed, 11 insertions(+), 2 deletions(-) >> >> diff --git a/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c >> b/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c >> index d15ec32243e2..36d936ab4300 100644 >> --- a/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c >> +++ b/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c >> @@ -182,14 +182,23 @@ bool dc_dmub_srv_cmd_run_list(struct >> dc_dmub_srv *dc_dmub_srv, unsigned int coun >>   bool dc_dmub_srv_optimized_init_done(struct dc_dmub_srv *dc_dmub_srv) >>   { >>       struct dmub_srv *dmub; >> -    union dmub_fw_boot_status status; >> +    struct dc_context *dc_ctx; >> +    union dmub_fw_boot_status boot_status; >> +    enum dmub_status status; >>         if (!dc_dmub_srv || !dc_dmub_srv->dmub) >>           return false; >>         dmub = dc_dmub_srv->dmub; >> +    dc_ctx = dc_dmub_srv->ctx; >> + >> +    status = dmub_srv_get_fw_boot_status(dmub, &boot_status); >> +    if (status != DMUB_STATUS_OK) { >> +        DC_ERROR("Error querying DMUB boot status: error=%d\n", >> status); >> +        return false; >> +    } >>   -    return status.bits.optimized_init_done; >> +    return boot_status.bits.optimized_init_done; >>   } >>     bool dc_dmub_srv_notify_stream_mask(struct dc_dmub_srv *dc_dmub_srv,