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Thu, 22 Jan 2026 07:31:01 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id T43fMDXScWnMLwAAD6G6ig (envelope-from ); Thu, 22 Jan 2026 07:31:01 +0000 Message-ID: Date: Thu, 22 Jan 2026 08:31:01 +0100 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v5 3/9] drm: verisilicon: add a driver for Verisilicon display controllers To: Icenowy Zheng , Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Maarten Lankhorst , Maxime Ripard , David Airlie , Simona Vetter , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Drew Fustini , Guo Ren , Fu Wei Cc: Philipp Zabel , Dmitry Baryshkov , Michal Wilczynski , Luca Ceresoli , Han Gao , Yao Zi , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-riscv@lists.infradead.org, Han Gao References: <20260116043746.336328-1-zhengxingda@iscas.ac.cn> <20260116043746.336328-4-zhengxingda@iscas.ac.cn> <56e1974c-0fe6-4bdb-918d-fcf6a8b866c1@suse.de> <4afa6f3110790c701c5e24901e9e66560cf21ad0.camel@icenowy.me> Content-Language: en-US From: Thomas Zimmermann Autocrypt: addr=tzimmermann@suse.de; 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DBL_BLOCKED_OPENRESOLVER(0.00)[suse.com:url,suse.de:mid,imap1.dmz-prg2.suse.org:helo] X-Spam-Flag: NO X-Spam-Score: -2.80 X-Spam-Level: Hi Am 22.01.26 um 08:06 schrieb Icenowy Zheng: > 在 2026-01-21星期三的 13:56 +0100，Thomas Zimmermann写道： > > =============== 8< ================= >>> + >>> +       if (irqs) >>> +               pr_warn("Unknown Verisilicon DC interrupt 0x%x >>> fired!\n", irqs); >> I'd avoid pr_warn() here. This can fill your logs quickly. > Then is pr_warn_once() okay? Yeah, warn_once should be fine. > >>> + >>> +       return IRQ_HANDLED; >>> +} > =============== 8< ================= Maybe consider returning IRQ_NONE if the (irq) tests succeeds. > >>> +       /* Fixup framebuffer address for src coordinates */ >>> +       dma_addr += (state->src.x1 >> 16) * bpp; >> bpp is deprecated and should be avoided in new code. You can compute >> the >> offset with drm_format_min_pitch(): >> >> drm_format_min_pitch(fb->format, 0, state->src.x1 >> 16 ) > Well it seems quite difficult to track what's deprecated in the DRM > subsystem, is there anything like a bulletin? No, you either know or find out during the review. :) We also tend to leave comments in the code. [1] [1] https://elixir.bootlin.com/linux/v6.18.6/source/include/drm/drm_fourcc.h#L82 Best regards Thomas > > > Thanks, > Icenowy -- -- Thomas Zimmermann Graphics Driver Developer SUSE Software Solutions Germany GmbH Frankenstr. 146, 90461 Nürnberg, Germany, www.suse.com GF: Jochen Jaser, Andrew McDonald, Werner Knoblich, (HRB 36809, AG Nürnberg)