From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pl1-f179.google.com (mail-pl1-f179.google.com [209.85.214.179]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 38F4078F2E for ; Sat, 17 Jan 2026 04:30:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.179 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768624234; cv=none; b=UQaWQgMDhTTxa3e11hCRBPsA+E40yxKjQ7BENvvtVSy/331QdynOLhGuSobfp+UtRYDHGIHcpmNPFUVqJnwhAX6AcHahrOyPiiuk3jPS+RdR7qaOqLzs4dWXXX7KSs+5prM9NUQBrtkSPnYCa8/Z1sT+pYMB/jdKw/P/GkwWMR0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768624234; c=relaxed/simple; bh=59/a8WTm/gWfCxzRJbq7yPBBnub6sQLN8ljF0PmknGU=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=Ahl2J/NLklnK32A3nvoVktFiquiVY6YXmsbyPFwb9W4ChwCHkb5ZmEarmRX4ygh523COJEK9/rjNJjtasjOCwnDwQVB8TjEjJYy0v4USh9nJVP0luiIg1w/MltjyIIJQ7JWrDTz39OVOPdfDUG0Sn//3oTzaOdFYah7yGGjRSDw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=Dr8EaJNM; arc=none smtp.client-ip=209.85.214.179 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="Dr8EaJNM" Received: by mail-pl1-f179.google.com with SMTP id d9443c01a7336-2a0c20ee83dso24281285ad.2 for ; Fri, 16 Jan 2026 20:30:32 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1768624232; x=1769229032; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=vCrSsGPr19mQwGzLbkxTfgCN7ZB1b84ZZ1vrvJhEPMM=; b=Dr8EaJNMXexPCHjNVzP2tIXtWtLq1VV3hlIDdypVXriV/eSV06TE+kYD/yn/Kz3XHU 8OYonGCjgY/bhj8t2FLPlkku3og3+eSfHUBcixadxhP6qh12AEt+pwZDCl4LF8JNpU8b BfiiZkwTO7nLNLYb1pW8mP2F4T/SbH1vFKLUKTjsgnCjL/UkVz6rKTk+buVAYhKpuuMe W9B5HgFtVlI9Fxn0maR4YFIbwGx0uzmbzAvX2bo85xM+yA7DKNRHDJWoKtkTsKbMSZBA 3p2ImB3TXS3Cw/xAFbEmVbCSJWf9rBLzf7PqrAKXFWWD6WRvu/sW3//3CdojoCjnyI1p lP3g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1768624232; x=1769229032; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-gg:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=vCrSsGPr19mQwGzLbkxTfgCN7ZB1b84ZZ1vrvJhEPMM=; b=uq25Z7BH4JZxjuVpJgdPdkj8xCzZ0/9SYlPkIlO4nq1zLKm9wscLl104fxv3DFyISm WLGPySRXv87wUBDXJQyqsq6LJSq4m6JhAdywV797mOSFunTV2KvtbCcT+sVMBTj1HXQX BoCVrCCbgF5CnYmUYGvH6MPZWFo7M6yb3DU8AOi2F2I9DH+vimYEyoxmV58VJOoPkt1o LQjAXrYjL0fzUsaGLzKDrpNbhb3ADb+6avHiNm6c+zrBo3MVsDIOVgKVLjRZCKUO3Ptw D4QAcreHx9eIOpw8+INQB9I97/YIEeY3den0Bu9rVhWuRnHreQNrXcj2S+NaiW9qw7AT diqA== X-Gm-Message-State: AOJu0YwVwyzoJanrXI+JlhnhA0cbKec3Jhg4iQqT5VZcQFnfShs5ZSil +mrfRKtFZJNcRSOff1N5N9ZDASW7UyMVYUODSlqSH6cqVtXtVDs31ukp X-Gm-Gg: AY/fxX6E3AfENb6rxDCOlskMgY1FwZEOfT0mhHlAmee/j/XeJ107BVZTu5NKMGxku4G MhnorgP07mASjum27942QMxIsGudlBHw+XUFtZUgXtHtN4o6u1ZmeUDrM2TH4hUhpAT97sf3BLm BbGjziHCSKseBoo1blctGjZ+vRWBv+l4T4ioK04eGfY14Vd6nouNYPsuC8FsxvmOFKggKdSAk7l HrI8MkcaLhF6dAX6hLGimSbU/NoT2KizxJ33pkILOJH0bP0BOhNPrSRNf2HQJvpWwsLiaW2JW88 Qo0dSeQ8/z8pHMZi3jyxC2WxV3vYYi3KTjd5QNcmTU50+83c5NaxnyYdrW0bsHtLt9Hh5P2psoC q8gjry4yqlfm+0rvrT6N0HE5IAhKMwfUqi3z/vwong5AQOFCfnehNL7FCfciJ42HCR5qhFGSDC7 rM7I/kp4GrZ2s66KRG9j7BbZCek9G0b2f+uBUbuy2hyhU= X-Received: by 2002:a17:902:f78a:b0:2a0:b066:3f55 with SMTP id d9443c01a7336-2a7174efc71mr45039245ad.10.1768624232460; Fri, 16 Jan 2026 20:30:32 -0800 (PST) Received: from cmpatel-home.hsd1.or.comcast.net ([2601:1c0:5780:9200:26af:b454:d793:29de]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-81fa108b23asm3370159b3a.3.2026.01.16.20.30.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 16 Jan 2026 20:30:31 -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 , kernel test robot Subject: [PATCH v7 1/2] staging: fbtft: Fix build failure when CONFIG_FB_DEVICE=n Date: Fri, 16 Jan 2026 20:29:30 -0800 Message-ID: <20260117042931.6088-1-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-Transfer-Encoding: 8bit When CONFIG_FB_DEVICE is disabled, struct fb_info does not provide a valid dev pointer. Direct dereferences of fb_info->dev therefore result in build failures. Fix this by avoiding direct accesses to fb_info->dev and switching the affected debug logging to framebuffer helpers that do not rely on a device pointer. This fixes the following build failure reported by the kernel test robot. Fixes: a06d03f9f238 ("staging: fbtft: Make FB_DEVICE dependency optional") Reported-by: kernel test robot Closes: https://lore.kernel.org/oe-kbuild-all/202601110740.Y9XK5HtN-lkp@intel.com Signed-off-by: Chintan Patel --- Changes in v7: - Split logging cleanups into a separate patch - Limit this patch to the CONFIG_FB_DEVICE=n build fix only Changes in v6: - Switch debug/info logging to fb_dbg() and fb_info()(suggested by Thomas Zimmermann) - Drop dev_of_fbinfo() usage in favor of framebuffer helpers that implicitly handle the debug/info context. - Drop __func__ usage per review feedback(suggested by greg k-h) - Add Fixes tag for a06d03f9f238 ("staging: fbtft: Make FB_DEVICE dependency optional") (suggested by Andy Shevchenko) Changes in v5: - Initial attempt to replace info->dev accesses using dev_of_fbinfo() helper drivers/staging/fbtft/fbtft-core.c | 19 +++++++++---------- 1 file changed, 9 insertions(+), 10 deletions(-) diff --git a/drivers/staging/fbtft/fbtft-core.c b/drivers/staging/fbtft/fbtft-core.c index 8a5ccc8ae0a1..1b3b62950205 100644 --- a/drivers/staging/fbtft/fbtft-core.c +++ b/drivers/staging/fbtft/fbtft-core.c @@ -365,9 +365,9 @@ static int fbtft_fb_setcolreg(unsigned int regno, unsigned int red, unsigned int val; int ret = 1; - dev_dbg(info->dev, - "%s(regno=%u, red=0x%X, green=0x%X, blue=0x%X, trans=0x%X)\n", - __func__, regno, red, green, blue, transp); + fb_dbg(info, + "regno=%u, red=0x%X, green=0x%X, blue=0x%X, trans=0x%X\n", + regno, red, green, blue, transp); switch (info->fix.visual) { case FB_VISUAL_TRUECOLOR: @@ -391,8 +391,7 @@ static int fbtft_fb_blank(int blank, struct fb_info *info) struct fbtft_par *par = info->par; int ret = -EINVAL; - dev_dbg(info->dev, "%s(blank=%d)\n", - __func__, blank); + fb_dbg(info, "blank=%d\n", blank); if (!par->fbtftops.blank) return ret; @@ -793,11 +792,11 @@ int fbtft_register_framebuffer(struct fb_info *fb_info) if (spi) sprintf(text2, ", spi%d.%d at %d MHz", spi->controller->bus_num, spi_get_chipselect(spi, 0), spi->max_speed_hz / 1000000); - dev_info(fb_info->dev, - "%s frame buffer, %dx%d, %d KiB video memory%s, fps=%lu%s\n", - fb_info->fix.id, fb_info->var.xres, fb_info->var.yres, - fb_info->fix.smem_len >> 10, text1, - HZ / fb_info->fbdefio->delay, text2); + fb_info(fb_info, + "%s frame buffer, %dx%d, %d KiB video memory%s, fps=%lu%s\n", + fb_info->fix.id, fb_info->var.xres, fb_info->var.yres, + fb_info->fix.smem_len >> 10, text1, + HZ / fb_info->fbdefio->delay, text2); /* Turn on backlight if available */ if (fb_info->bl_dev) { -- 2.43.0