From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-ej1-f47.google.com (mail-ej1-f47.google.com [209.85.218.47]) (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 434733FF895 for ; Wed, 3 Jun 2026 07:34:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.218.47 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780472068; cv=none; b=VY9pPbgY8cnGlALvnpI2BH/XDkIfDKmd7v39d7Kdt924MLNELFqQnEFaPFKhqFBNmvHpkLFBN1X3/d1dhuUTRIIlVPOkPjkhHEMi7+E99WUdTLPOkJUfVsVUM0DPzwCa+nrCe4hXtRKTM+4tZaTeJNQ1t4nUkES4TsdTg+jR4x0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780472068; c=relaxed/simple; bh=08RidtlahiJ8c10vz6uXOCC0lnAJVvKCOPsHPm83Rbw=; h=Date:From:To:Cc:Subject:Message-ID:MIME-Version:Content-Type: Content-Disposition; b=dO2vcK04qH1QH6NecAF3QjW7sjejJucFBJkn7vsewrKKy8MN+Nx4HWEkWl0pNAzSbI6+LLHrpIacAc7Rz+d32kgmwX4aK9J13DIo3B4eMj5W12t00Cuuc5Isht/C29u63jik4aUDzUXnu/vQuUIynknnt6M151oft6hs9bD/mPw= 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=i/2TzDlJ; arc=none smtp.client-ip=209.85.218.47 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="i/2TzDlJ" Received: by mail-ej1-f47.google.com with SMTP id a640c23a62f3a-bec4639953dso614525466b.1 for ; Wed, 03 Jun 2026 00:34:26 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1780472065; x=1781076865; darn=vger.kernel.org; h=content-disposition:mime-version:message-id:subject:cc:to:from:date :from:to:cc:subject:date:message-id:reply-to; bh=tPiXO1dCCP98YnBjWC02+T/M/Rv7LEFPOyMbOWtK8IE=; b=i/2TzDlJw3YyMuL06BYvYuUywWByQ/Sm6zwf9L4uSYtdHI+IWCxZ3wHtyL46XIBrT6 zc11fqi61VKGe8SePKulQvOZnaB7tkc4AXmvkK3/3gjcYQJZpTgNOLSMY/TACeGUPw0e sOsSLP83PYFxFb2pNIKFKh0xl/ck+fztQQrrSN7h8r11ptCMnaOTP4Uh2rnDGLRCQbxu uQmTkjUDGDGGk0byTRoK3HOgxWKduSr7O0boFf4mFrDFYzram8neQk3WabQy53AsgsW6 kJOMW4fOE379qCaFCM2mba6gSciAYGYBcqjU4LogULbE+N//EvV9XX2YV/4LntTxF12M xpjg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1780472065; x=1781076865; h=content-disposition:mime-version:message-id:subject:cc:to:from:date :x-gm-gg:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=tPiXO1dCCP98YnBjWC02+T/M/Rv7LEFPOyMbOWtK8IE=; b=awcqpfYdBTTlrxGTwOM3pBXaZqAZAt4Dz9ENZf7+FatoTs8vcc3f2NDVtuTu7/ESvW CGNufZMQ4uBebF2oJS4F3AG3jA9+qwbyrSDKH4B7Vud0QzlRrkw6AUVQaIAJfgduAZql NRnMLMp41UeLd80BzbkC1oirEr1NmFqGy4LqHVPR7fayEweOK3vCtBiEBvrgGf68vYQ9 VQ2pSQbdX1gQbIFNadT82U3NJFuhp65IeE3QecHj5euAOOtQOkKoWxEFqH1tT9lcVpWk IHsIFShK2CKx5zngSf/T6snx8utXemEziyZ7bARWJ62ZYQ7BcJ4+l7IDEr9D0C/0XxXG voAQ== X-Forwarded-Encrypted: i=1; AFNElJ/2UwHmMgjDyu86Cyso3CwhjvtCmQSDhb7qE6Up7wY/W+doyiUPqPdRg6+HgCNF4ezqLbjZl7OoNQkxHnI=@vger.kernel.org X-Gm-Message-State: AOJu0YxgK0jq17T8JdUDE+LZWkULFPnKBaBrsQJ/7OplcOr5H4n0xNpu jinqDc9edE9c+fQnIZsPd32pqIChZDYRjpbsbC315rLL/zYaog81G868 X-Gm-Gg: Acq92OHsG/6NPmk7fBWqrEKDWq7N0H7EluMnRAgV+DF6zUngFiNE/tHEiLyUPMfcASg o8HOPR0UxO9wc+nsR4mgqmm8xp88M+7w7Htw5htQ6qIq3q0XtEbH3ur5L0h9UksaX8aB+6xUDWU 02uDZGOLtPFs8AlvVOCyA2a0f4YMmQf05tovMEfdWRZK83na93HhTFf5vaOknmieYmJud1xuFLd kOuGTOx3m28E47DGkxxx7N0ZE6GMl8qymiXD5iTzKl4vW1YOUEOKH+JaBGNCGv1YlF7Qxp0jiLQ gOgtPY1f2szKO34wpzQCzRsqC5qd3EfsB5dypbns+lKzygNbHdMDR22Sd1HKdZFZAM2Y0p4E8LH K9Xquy09XMtXWygIRBnC1JVWevZEa7N4+hEG5FzvXBdP5wZtVQENtBhUU7dwHvdEm+vCl/dqNYQ 2nJcZBR1AcuEHy/yiY4+JpcdJFSONsrw== X-Received: by 2002:a17:906:f58d:b0:bec:64d4:3869 with SMTP id a640c23a62f3a-bf0b0fdda85mr96495066b.4.1780472064614; Wed, 03 Jun 2026 00:34:24 -0700 (PDT) Received: from localhost ([196.207.164.177]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-bf0517721e5sm102019166b.9.2026.06.03.00.34.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 03 Jun 2026 00:34:24 -0700 (PDT) Date: Wed, 3 Jun 2026 10:34:21 +0300 From: Dan Carpenter To: Thomas Petazzoni Cc: Andy Shevchenko , Greg Kroah-Hartman , Helge Deller , Thomas Zimmermann , Chintan Patel , dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org, linux-staging@lists.linux.dev, linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org Subject: [PATCH] staging: fbtft: Use sysfs_emit_at() to print to sysfs file Message-ID: 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=us-ascii Content-Disposition: inline X-Mailer: git-send-email haha only kidding This scnprintf() uses the wrong limit. It should be "PAGE_SIZE - len" instead of just PAGE_SIZE. We're not going to hit the limit in real life since we are printing at most FBTFT_GAMMA_MAX_VALUES_TOTAL (128) u32 values, however, it's still worth fixing. Use sysfs_emit_at() to fix this since this is a sysfs file. Fixes: c296d5f9957c ("staging: fbtft: core support") Signed-off-by: Dan Carpenter --- drivers/staging/fbtft/fbtft-sysfs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/staging/fbtft/fbtft-sysfs.c b/drivers/staging/fbtft/fbtft-sysfs.c index d05599d80011..343545e83a37 100644 --- a/drivers/staging/fbtft/fbtft-sysfs.c +++ b/drivers/staging/fbtft/fbtft-sysfs.c @@ -98,7 +98,7 @@ sprintf_gamma(struct fbtft_par *par, u32 *curves, char *buf) mutex_lock(&par->gamma.lock); for (i = 0; i < par->gamma.num_curves; i++) { for (j = 0; j < par->gamma.num_values; j++) - len += scnprintf(&buf[len], PAGE_SIZE, + len += sysfs_emit_at(buf, len, "%04x ", curves[i * par->gamma.num_values + j]); buf[len - 1] = '\n'; } -- 2.53.0