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Message-ID: <202310301026.haj8ZOHJ-lkp@intel.com>
Date: Mon, 30 Oct 2023 10:28:29 +0800
From: kernel test robot <lkp@...el.com>
To: Sui Jingfeng <suijingfeng@...ngson.cn>,
Maxime Ripard <mripard@...nel.org>,
Thomas Zimmermann <tzimmermann@...e.de>
Cc: oe-kbuild-all@...ts.linux.dev, dri-devel@...ts.freedesktop.org,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH 5/8] drm/loongson: Using vbios for the LS7A2000 output
initialization
Hi Sui,
kernel test robot noticed the following build warnings:
[auto build test WARNING on drm-misc/drm-misc-next]
[also build test WARNING on linus/master v6.6-rc7 next-20231027]
[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/Sui-Jingfeng/drm-loongson-Introduce-a-minimal-support-for-Loongson-VBIOS/20231030-034730
base: git://anongit.freedesktop.org/drm/drm-misc drm-misc-next
patch link: https://lore.kernel.org/r/20231029194607.379459-6-suijingfeng%40loongson.cn
patch subject: [PATCH 5/8] drm/loongson: Using vbios for the LS7A2000 output initialization
config: loongarch-randconfig-002-20231030 (https://download.01.org/0day-ci/archive/20231030/202310301026.haj8ZOHJ-lkp@intel.com/config)
compiler: loongarch64-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231030/202310301026.haj8ZOHJ-lkp@intel.com/reproduce)
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 <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202310301026.haj8ZOHJ-lkp@intel.com/
All warnings (new ones prefixed by >>):
>> drivers/gpu/drm/loongson/lsdc_output_7a2000.c:568:1: warning: no previous prototype for 'ls7a2000_query_output_configuration' [-Wmissing-prototypes]
568 | ls7a2000_query_output_configuration(struct drm_device *ddev, unsigned int pipe)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/loongson/lsdc_output_7a2000.c:498:46: warning: 'ls7a2000_encoder_helper_funcs' defined but not used [-Wunused-const-variable=]
498 | static const struct drm_encoder_helper_funcs ls7a2000_encoder_helper_funcs = {
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/loongson/lsdc_output_7a2000.c:272:39: warning: 'ls7a2000_encoder_funcs' defined but not used [-Wunused-const-variable=]
272 | static const struct drm_encoder_funcs ls7a2000_encoder_funcs[2] = {
| ^~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/loongson/lsdc_output_7a2000.c:201:41: warning: 'ls7a2000_hdmi_connector_funcs' defined but not used [-Wunused-const-variable=]
201 | static const struct drm_connector_funcs ls7a2000_hdmi_connector_funcs[2] = {
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/loongson/lsdc_output_7a2000.c:77:48: warning: 'ls7a2000_connector_helpers' defined but not used [-Wunused-const-variable=]
77 | static const struct drm_connector_helper_funcs ls7a2000_connector_helpers = {
| ^~~~~~~~~~~~~~~~~~~~~~~~~~
vim +/ls7a2000_query_output_configuration +568 drivers/gpu/drm/loongson/lsdc_output_7a2000.c
559
560 /*
561 * For LS7A2000, the built-in VGA encoder is transparent. If there are
562 * external encoder exist, then the internal HDMI encoder MUST be enabled
563 * and initialized. As the internal HDMI encoder is always connected, so
564 * only the transmitters which take HDMI signal (such as HDMI to eDP, HDMI
565 * to LVDS, etc) are usable with.
566 */
567 const struct lsdc_output_desc *
> 568 ls7a2000_query_output_configuration(struct drm_device *ddev, unsigned int pipe)
569 {
570 enum loongson_vbios_encoder_name encoder_name = 0;
571 bool ret;
572
573 ret = loongson_vbios_query_encoder_info(ddev, pipe, NULL,
574 &encoder_name, NULL);
575 if (!ret)
576 goto bailout;
577
578 if (pipe == 0) {
579 switch (encoder_name) {
580 case ENCODER_CHIP_INTERNAL_HDMI:
581 return &ls7a2000_hdmi_pipe0;
582
583 /*
584 * For LS7A2000, the built-in VGA encoder is transparent.
585 */
586 case ENCODER_CHIP_INTERNAL_VGA:
587 return &ls7a2000_vga_pipe0;
588
589 /*
590 * External display bridge exists, the internal HDMI encoder
591 * MUST be enabled and initialized. Please add a drm bridge
592 * driver, and attach to this encoder.
593 */
594 default:
595 return &ls7a2000_hdmi_pipe0;
596 }
597 }
598
599 if (pipe == 1) {
600 switch (encoder_name) {
601 case ENCODER_CHIP_INTERNAL_HDMI:
602 return &ls7a2000_hdmi_pipe1;
603
604 /*
605 * External display bridge exists, the internal HDMI encoder
606 * MUST be enabled and initialized. Please add a drm bridge
607 * driver, and attach it to this encoder.
608 */
609 default:
610 return &ls7a2000_hdmi_pipe1;
611 }
612 }
613
614 bailout:
615 if (pipe == 0)
616 return &ls7a2000_vga_pipe0;
617
618 if (pipe == 1)
619 return &ls7a2000_hdmi_pipe1;
620
621 return NULL;
622 }
623
--
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https://github.com/intel/lkp-tests/wiki
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