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Tue, 06 Jan 2026 20:43:12 -0800 (PST) Received: from cmpatel-home.hsd1.or.comcast.net ([2601:1c0:5780:9200:d1c8:9d76:637a:6957]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2a3e3c39ef2sm36866225ad.14.2026.01.06.20.43.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 06 Jan 2026 20:43:12 -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 v4 0/4] fbdev: Make CONFIG_FB_DEVICE optional for drivers Date: Tue, 6 Jan 2026 20:42:53 -0800 Message-ID: <20260107044258.528624-1-chintanlike@gmail.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This series makes CONFIG_FB_DEVICE optional for fbdev drivers that use it only for sysfs interfaces, addressing Thomas Zimmermann’s TODO to remove hard FB_DEVICE dependencies. The series introduces a small helper, dev_of_fbinfo(), which returns NULL when CONFIG_FB_DEVICE=n. This allows sysfs code paths to be skipped via runtime checks, avoids #ifdef CONFIG_FB_DEVICE clutter, and keeps full compile-time syntax checking. Signed-off-by: Chintan Patel --- Changes in v4: - PTR_IF() was removed and overlay sysfs is now optional via __maybe_unused and #ifdef CONFIG_FB_DEVICE (suggested by Helge Deller) - Decouple variable definition and assignment in omapfb_remove/create_sysfs (suggested by Andy Shevchenko) - Added Reviewed-by tags: - fb: Add dev_of_fbinfo(): Helge Deller, Andy Shevchenko - staging: fbtft: Helge Deller Changes in v3: - Use PTR_IF() to conditionally include overlay_sysfs_group in overlay_sysfs_groups(suggested by Andy Shevchenko) - Decouple variable definition and assignment in fbtft_sysfs_init/exit(suggested by Andy Shevchenko) Changes in v2: - Add dev_of_fbinfo() helper (suggested by Helge Deller) - Replace #ifdef CONFIG_FB_DEVICE blocks with runtime NULL checks - Switch to fb_dbg() / fb_info() logging (suggested by Thomas Zimmermann) --- Chintan Patel (4): fb: Add dev_of_fbinfo() helper for optional sysfs support staging: fbtft: Make FB_DEVICE dependency optional fbdev: omapfb: Make FB_DEVICE dependency optional fbdev: sh_mobile_lcdc: Make FB_DEVICE dependency optional drivers/staging/fbtft/Kconfig | 5 ++++- drivers/staging/fbtft/fbtft-sysfs.c | 20 +++++++++++++++---- drivers/video/fbdev/omap2/omapfb/Kconfig | 3 ++- .../video/fbdev/omap2/omapfb/omapfb-sysfs.c | 18 +++++++++++++---- drivers/video/fbdev/sh_mobile_lcdcfb.c | 5 ++++- include/linux/fb.h | 9 +++++++++ 6 files changed, 49 insertions(+), 11 deletions(-) -- 2.43.0