From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.18]) (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 3445E286435 for ; Tue, 16 Sep 2025 05:25:46 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758000349; cv=none; b=rrU/ygY7Qw4lC/IfVvTKWFwWqyMaTBsGdI3WCPWlYYXTEZh38voI3wXSMClFH1MlAXA0Nx4z23v8M0eqgiDASbiRn/57si/D3oXFZ23fpWwGbdQPP9e8amkvoLtLWKybe0Fy+ZCjN9/2Q3qsJ5KG77K3jaX7QvHODB6zwQEzFI0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758000349; c=relaxed/simple; bh=9v2PbL51iUi5Dfdg6tAHaBe0qV5wXBTCTgBAnlmmDMY=; h=Date:From:To:Cc:Subject:Message-ID:MIME-Version:Content-Type: Content-Disposition; b=p1BzGHBWSpeiZ3ImhCzHKOqckzN1usyc+efgqDSVOxKTkmDBR9mvSvZiXGIAZPzm7gfi4O+LgpbznIzlLwAWy8/itBKjgtJ/zIazGpBvROQx0CWOSEmDmQyk/zjsMM2r1EOhRP9Bu7Hc42EZ2SlNmfXdaqp3gMHm6MhY5Fpm7uc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=EXoRqw8b; arc=none smtp.client-ip=192.198.163.18 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="EXoRqw8b" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1758000347; x=1789536347; h=date:from:to:cc:subject:message-id:mime-version; bh=9v2PbL51iUi5Dfdg6tAHaBe0qV5wXBTCTgBAnlmmDMY=; b=EXoRqw8buz0xuhTcl9AXr1b0nQ86ZldZpYpKQOgBvA8dYnsFIn13fX3f vR1J9r/9Dz7ZmmmVNki6pWpdEhmJWAQKNQDuDy5i0ZpEQguZfkix97MJT ah4blHdQup2ne5QKi5ytpivC0pAOI1u7DkZghDyLkl98BaKN+60wpfx7K KiGRFQlHCSjlZTSA0J+yEb4E5QKRpZPMmE5qKSC/fAoSSd3Kd/v9VPsCw 925BUhwqs0/e/p3D/niITxlTXrVBoWo7LG2RhcpLTYoLcOWdWWYmrUFuM 941MEcwdmmcICRGY2IaQckZlrwUr4OrnV3341L8+RoSo+65piCEOOvhAt A==; X-CSE-ConnectionGUID: swxSICYaTGawrm/1sp19pw== X-CSE-MsgGUID: fNwUwBCUSZyw+FrHUZnFpA== X-IronPort-AV: E=McAfee;i="6800,10657,11554"; a="59491734" X-IronPort-AV: E=Sophos;i="6.18,268,1751266800"; d="scan'208";a="59491734" Received: from fmviesa007.fm.intel.com ([10.60.135.147]) by fmvoesa112.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 15 Sep 2025 22:25:46 -0700 X-CSE-ConnectionGUID: JfBuQr2SRxif6AVA0ZPobQ== X-CSE-MsgGUID: ZRvT4KDlTWecXK8LZsN+9g== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.18,268,1751266800"; d="scan'208";a="174445131" Received: from lkp-server01.sh.intel.com (HELO 5b01dd97f97c) ([10.239.97.150]) by fmviesa007.fm.intel.com with ESMTP; 15 Sep 2025 22:25:45 -0700 Received: from kbuild by 5b01dd97f97c with local (Exim 4.96) (envelope-from ) id 1uyOCE-000111-2o; Tue, 16 Sep 2025 05:25:42 +0000 Date: Tue, 16 Sep 2025 13:25:03 +0800 From: kernel test robot To: oe-kbuild@lists.linux.dev Cc: lkp@intel.com, Dan Carpenter Subject: Re: [PATCH V3] drm/bridge: ti-sn65dsi86: Add support for DisplayPort mode with HPD Message-ID: <202509161344.FPfsjq01-lkp@intel.com> Precedence: bulk X-Mailing-List: oe-kbuild@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline BCC: lkp@intel.com CC: oe-kbuild-all@lists.linux.dev In-Reply-To: <20250910183353.2045339-1-john.ripple@keysight.com> References: <20250910183353.2045339-1-john.ripple@keysight.com> TO: John Ripple TO: john.ripple@keysight.com CC: Laurent.pinchart@ideasonboard.com CC: airlied@gmail.com CC: andrzej.hajda@intel.com CC: blake.vermeer@keysight.com CC: dianders@chromium.org CC: dri-devel@lists.freedesktop.org CC: jernej.skrabec@gmail.com CC: jonas@kwiboo.se CC: linux-kernel@vger.kernel.org CC: maarten.lankhorst@linux.intel.com CC: matt_laubhan@keysight.com CC: mripard@kernel.org CC: neil.armstrong@linaro.org CC: rfoss@kernel.org CC: simona@ffwll.ch CC: tzimmermann@suse.de Hi John, kernel test robot noticed the following build warnings: [auto build test WARNING on linus/master] [also build test WARNING on v6.17-rc6 next-20250915] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/UPDATE-20250911-023707/John-Ripple/drm-bridge-ti-sn65dsi86-break-probe-dependency-loop/20250820-235209 base: linus/master patch link: https://lore.kernel.org/r/20250910183353.2045339-1-john.ripple%40keysight.com patch subject: [PATCH V3] drm/bridge: ti-sn65dsi86: Add support for DisplayPort mode with HPD :::::: branch date: 5 days ago :::::: commit date: 5 days ago config: x86_64-randconfig-161-20250916 (https://download.01.org/0day-ci/archive/20250916/202509161344.FPfsjq01-lkp@intel.com/config) compiler: gcc-14 (Debian 14.2.0-19) 14.2.0 If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Reported-by: Dan Carpenter | Closes: https://lore.kernel.org/r/202509161344.FPfsjq01-lkp@intel.com/ smatch warnings: drivers/gpu/drm/bridge/ti-sn65dsi86.c:1385 ti_sn_bridge_interrupt() error: uninitialized symbol 'status'. vim +/status +1385 drivers/gpu/drm/bridge/ti-sn65dsi86.c 982f589bde7a7f Stephen Boyd 2020-11-02 1364 b8670cf7e6a41b John Ripple 2025-09-10 1365 static irqreturn_t ti_sn_bridge_interrupt(int irq, void *private) b8670cf7e6a41b John Ripple 2025-09-10 1366 { b8670cf7e6a41b John Ripple 2025-09-10 1367 struct ti_sn65dsi86 *pdata = private; b8670cf7e6a41b John Ripple 2025-09-10 1368 struct drm_device *dev = pdata->bridge.dev; b8670cf7e6a41b John Ripple 2025-09-10 1369 u8 status; b8670cf7e6a41b John Ripple 2025-09-10 1370 int ret; b8670cf7e6a41b John Ripple 2025-09-10 1371 bool hpd_event = false; b8670cf7e6a41b John Ripple 2025-09-10 1372 b8670cf7e6a41b John Ripple 2025-09-10 1373 mutex_lock(&pdata->hpd_mutex); b8670cf7e6a41b John Ripple 2025-09-10 1374 if (!pdata->hpd_enabled) { b8670cf7e6a41b John Ripple 2025-09-10 1375 mutex_unlock(&pdata->hpd_mutex); b8670cf7e6a41b John Ripple 2025-09-10 1376 return IRQ_HANDLED; b8670cf7e6a41b John Ripple 2025-09-10 1377 } b8670cf7e6a41b John Ripple 2025-09-10 1378 b8670cf7e6a41b John Ripple 2025-09-10 1379 ret = ti_sn65dsi86_read_u8(pdata, SN_IRQ_STATUS_REG, &status); b8670cf7e6a41b John Ripple 2025-09-10 1380 if (ret) b8670cf7e6a41b John Ripple 2025-09-10 1381 pr_err("Failed to read IRQ status: %d\n", ret); b8670cf7e6a41b John Ripple 2025-09-10 1382 else b8670cf7e6a41b John Ripple 2025-09-10 1383 hpd_event = status & (HPD_REMOVAL_STATUS | HPD_INSERTION_STATUS); b8670cf7e6a41b John Ripple 2025-09-10 1384 b8670cf7e6a41b John Ripple 2025-09-10 @1385 if (status) { b8670cf7e6a41b John Ripple 2025-09-10 1386 drm_dbg(dev, "(SN_IRQ_STATUS_REG = %#x)\n", status); b8670cf7e6a41b John Ripple 2025-09-10 1387 ret = regmap_write(pdata->regmap, SN_IRQ_STATUS_REG, status); b8670cf7e6a41b John Ripple 2025-09-10 1388 if (ret) b8670cf7e6a41b John Ripple 2025-09-10 1389 pr_err("Failed to clear IRQ status: %d\n", ret); b8670cf7e6a41b John Ripple 2025-09-10 1390 } else { b8670cf7e6a41b John Ripple 2025-09-10 1391 mutex_unlock(&pdata->hpd_mutex); b8670cf7e6a41b John Ripple 2025-09-10 1392 return IRQ_NONE; b8670cf7e6a41b John Ripple 2025-09-10 1393 } b8670cf7e6a41b John Ripple 2025-09-10 1394 b8670cf7e6a41b John Ripple 2025-09-10 1395 /* Only send the HPD event if we are bound with a device. */ b8670cf7e6a41b John Ripple 2025-09-10 1396 if (dev && hpd_event) b8670cf7e6a41b John Ripple 2025-09-10 1397 drm_kms_helper_hotplug_event(dev); b8670cf7e6a41b John Ripple 2025-09-10 1398 mutex_unlock(&pdata->hpd_mutex); 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Mon, 15 Sep 2025 22:46:28 -0700 (PDT) Received: from localhost ([196.207.164.177]) by smtp.gmail.com with UTF8SMTPSA id ffacd0b85a97d-3e95b111b68sm10476481f8f.32.2025.09.15.22.46.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 15 Sep 2025 22:46:27 -0700 (PDT) Date: Tue, 16 Sep 2025 08:46:23 +0300 From: Dan Carpenter To: oe-kbuild@lists.linux.dev, John Ripple Cc: lkp@intel.com, oe-kbuild-all@lists.linux.dev, Laurent.pinchart@ideasonboard.com, airlied@gmail.com, andrzej.hajda@intel.com, blake.vermeer@keysight.com, dianders@chromium.org, dri-devel@lists.freedesktop.org, jernej.skrabec@gmail.com, jonas@kwiboo.se, linux-kernel@vger.kernel.org, maarten.lankhorst@linux.intel.com, matt_laubhan@keysight.com, mripard@kernel.org, neil.armstrong@linaro.org, rfoss@kernel.org, simona@ffwll.ch, tzimmermann@suse.de Subject: Re: [PATCH V3] drm/bridge: ti-sn65dsi86: Add support for DisplayPort mode with HPD Message-ID: <202509161344.FPfsjq01-lkp@intel.com> Precedence: bulk X-Mailing-List: oe-kbuild@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250910183353.2045339-1-john.ripple@keysight.com> Message-ID: <20250916054623.kyQark4rLlJYMH4pMqpbKXXldYtctbvmemMDwwQ4sYQ@z> Hi John, kernel test robot noticed the following build warnings: https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/UPDATE-20250911-023707/John-Ripple/drm-bridge-ti-sn65dsi86-break-probe-dependency-loop/20250820-235209 base: linus/master patch link: https://lore.kernel.org/r/20250910183353.2045339-1-john.ripple%40keysight.com patch subject: [PATCH V3] drm/bridge: ti-sn65dsi86: Add support for DisplayPort mode with HPD config: x86_64-randconfig-161-20250916 (https://download.01.org/0day-ci/archive/20250916/202509161344.FPfsjq01-lkp@intel.com/config) compiler: gcc-14 (Debian 14.2.0-19) 14.2.0 If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Reported-by: Dan Carpenter | Closes: https://lore.kernel.org/r/202509161344.FPfsjq01-lkp@intel.com/ smatch warnings: drivers/gpu/drm/bridge/ti-sn65dsi86.c:1385 ti_sn_bridge_interrupt() error: uninitialized symbol 'status'. vim +/status +1385 drivers/gpu/drm/bridge/ti-sn65dsi86.c b8670cf7e6a41b John Ripple 2025-09-10 1365 static irqreturn_t ti_sn_bridge_interrupt(int irq, void *private) b8670cf7e6a41b John Ripple 2025-09-10 1366 { b8670cf7e6a41b John Ripple 2025-09-10 1367 struct ti_sn65dsi86 *pdata = private; b8670cf7e6a41b John Ripple 2025-09-10 1368 struct drm_device *dev = pdata->bridge.dev; b8670cf7e6a41b John Ripple 2025-09-10 1369 u8 status; b8670cf7e6a41b John Ripple 2025-09-10 1370 int ret; b8670cf7e6a41b John Ripple 2025-09-10 1371 bool hpd_event = false; b8670cf7e6a41b John Ripple 2025-09-10 1372 b8670cf7e6a41b John Ripple 2025-09-10 1373 mutex_lock(&pdata->hpd_mutex); b8670cf7e6a41b John Ripple 2025-09-10 1374 if (!pdata->hpd_enabled) { b8670cf7e6a41b John Ripple 2025-09-10 1375 mutex_unlock(&pdata->hpd_mutex); b8670cf7e6a41b John Ripple 2025-09-10 1376 return IRQ_HANDLED; b8670cf7e6a41b John Ripple 2025-09-10 1377 } b8670cf7e6a41b John Ripple 2025-09-10 1378 b8670cf7e6a41b John Ripple 2025-09-10 1379 ret = ti_sn65dsi86_read_u8(pdata, SN_IRQ_STATUS_REG, &status); b8670cf7e6a41b John Ripple 2025-09-10 1380 if (ret) b8670cf7e6a41b John Ripple 2025-09-10 1381 pr_err("Failed to read IRQ status: %d\n", ret); status isn't initialized on error. b8670cf7e6a41b John Ripple 2025-09-10 1382 else b8670cf7e6a41b John Ripple 2025-09-10 1383 hpd_event = status & (HPD_REMOVAL_STATUS | HPD_INSERTION_STATUS); b8670cf7e6a41b John Ripple 2025-09-10 1384 b8670cf7e6a41b John Ripple 2025-09-10 @1385 if (status) { ^^^^^^ warning b8670cf7e6a41b John Ripple 2025-09-10 1386 drm_dbg(dev, "(SN_IRQ_STATUS_REG = %#x)\n", status); b8670cf7e6a41b John Ripple 2025-09-10 1387 ret = regmap_write(pdata->regmap, SN_IRQ_STATUS_REG, status); b8670cf7e6a41b John Ripple 2025-09-10 1388 if (ret) b8670cf7e6a41b John Ripple 2025-09-10 1389 pr_err("Failed to clear IRQ status: %d\n", ret); b8670cf7e6a41b John Ripple 2025-09-10 1390 } else { b8670cf7e6a41b John Ripple 2025-09-10 1391 mutex_unlock(&pdata->hpd_mutex); b8670cf7e6a41b John Ripple 2025-09-10 1392 return IRQ_NONE; b8670cf7e6a41b John Ripple 2025-09-10 1393 } b8670cf7e6a41b John Ripple 2025-09-10 1394 b8670cf7e6a41b John Ripple 2025-09-10 1395 /* Only send the HPD event if we are bound with a device. */ b8670cf7e6a41b John Ripple 2025-09-10 1396 if (dev && hpd_event) b8670cf7e6a41b John Ripple 2025-09-10 1397 drm_kms_helper_hotplug_event(dev); b8670cf7e6a41b John Ripple 2025-09-10 1398 mutex_unlock(&pdata->hpd_mutex); b8670cf7e6a41b John Ripple 2025-09-10 1399 b8670cf7e6a41b John Ripple 2025-09-10 1400 return IRQ_HANDLED; b8670cf7e6a41b John Ripple 2025-09-10 1401 } -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki