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Mon, 29 Dec 2025 21:29:05 -0800 (PST) Received: from cmpatel-home.hsd1.or.comcast.net ([2601:1c0:5780:9200:f7a0:c2f:d915:faf0]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2a2f3c8286esm289290375ad.33.2025.12.29.21.29.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 29 Dec 2025 21:29:04 -0800 (PST) From: Chintan Patel To: linux-fbdev@vger.kernel.org, linux-staging@lists.linux.dev, linux-omap@vger.kernel.org Cc: linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, tzimmermann@suse.de, andy@kernel.org, deller@gmx.de, gregkh@linuxfoundation.org, Chintan Patel Subject: [PATCH v3 1/4] fb: Add dev_of_fbinfo() helper for optional sysfs support Date: Mon, 29 Dec 2025 21:28:19 -0800 Message-ID: <20251230052827.4676-2-chintanlike@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20251230052827.4676-1-chintanlike@gmail.com> References: <20251230052827.4676-1-chintanlike@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Add dev_of_fbinfo() to return the framebuffer struct device when CONFIG_FB_DEVICE is enabled, or NULL otherwise. This allows fbdev drivers to use sysfs interfaces via runtime checks instead of CONFIG_FB_DEVICE ifdefs, keeping the code clean while remaining fully buildable. Suggested-by: Helge Deller Signed-off-by: Chintan Patel Reviewed-by: Helge Deller --- include/linux/fb.h | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/include/linux/fb.h b/include/linux/fb.h index 05cc251035da..dad3fb61a06a 100644 --- a/include/linux/fb.h +++ b/include/linux/fb.h @@ -628,6 +628,15 @@ static inline void unlock_fb_info(struct fb_info *info) mutex_unlock(&info->lock); } =20 +static inline struct device *dev_of_fbinfo(const struct fb_info *info) +{ +#ifdef CONFIG_FB_DEVICE + return info->dev; +#else + return NULL; +#endif +} + static inline void __fb_pad_aligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 s_pitch, u32 height) { --=20 2.43.0