From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id CB022247291 for ; Sun, 14 Jun 2026 05:59:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781416753; cv=none; b=aXNmPZmsa5ztCe3K6sopX4gwLgQrFMWGZMZ/dIXFyXws0NCnNT24vH2ssEpktrYGuUr94XQff/TcFmpG3xhk0A3DXKnd5sEJJkcP1d89Yrh6/vAOSNnEJN6uO8UGF5SRY6kzuoz+5zUtKHQ5E/Hrabch34p1cv0swrCbowL7b7A= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781416753; c=relaxed/simple; bh=jE/Yk60TyFHssu0a8LnyeHWYzDFY55l8OvDScEVkfe0=; h=Subject:To:From:Date:Message-ID:MIME-Version:Content-Type; b=AzoRuxJL33x5nhLbuX/FfW+1DwzT5YCmTAaUEE6AnU6vXcl7jKE0PYOaNZSZzUAQMY5dFsFKO3q4lymCBXxQpUFtArzivQFoOSRPUU3eaEQc7aC46RG/bAraxGVFqmFF+rczz94K9IpMF68C9UYNB0y66TAn2sqd4GtyDd1TOIo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=WKzBZuyx; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="WKzBZuyx" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E0AFF1F000E9; Sun, 14 Jun 2026 05:59:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1781416752; bh=/ao3otWrIZ6d6wFroZmqkg8EC6zPouPyEEeqvWdkHME=; h=Subject:To:From:Date; b=WKzBZuyx8d45lT1h1H1CEDKdEm1GDbFn5AVptYcysWGu4aeRz+Nu6fnsZk1C7OhOF hA6VFErkltxUaQ/p64vfXakZsh1SprppiebkB2lK+a49BiUsbeDUyl4tRs3Tqb9hp6 +1XYjpSVXYnWN0Q4PPgHGTdZ/m1JevKF11Kb+DK4= Subject: patch "iio: dac: ad3552r-hs: fix uninitialized data ni" added to char-misc-testing To: error27@gmail.com,Stable@vger.kernel.org,adureghello@baylibre.com,jic23@kernel.org From: Date: Sun, 14 Jun 2026 07:57:23 +0200 Message-ID: <2026061423-unwrapped-flavored-5154@gregkh> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit This is a note to let you know that I've just added the patch titled iio: dac: ad3552r-hs: fix uninitialized data ni to my char-misc git tree which can be found at git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git in the char-misc-testing branch. The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.) The patch will be merged to the char-misc-next branch sometime soon, after it passes testing, and the merge window is open. If you have any questions about this process, please let me know. >From eaaa7eef181892ef7ba56c6295b81f0ae4492c13 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Mon, 25 May 2026 10:15:46 +0300 Subject: iio: dac: ad3552r-hs: fix uninitialized data ni ad3552r_hs_write_data_source() If the *ppos value is non-zero then the simple_write_to_buffer() function won't initialized the start of the buf[] buffer. Non-zero values for *ppos won't work here generally, so just test for them and return -ENOSPC at the start of the function. Fixes: b1c5d68ea66e ("iio: dac: ad3552r-hs: add support for internal ramp") Signed-off-by: Dan Carpenter Reviewed-by: Angelo Dureghello Cc: Signed-off-by: Jonathan Cameron --- drivers/iio/dac/ad3552r-hs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/dac/ad3552r-hs.c b/drivers/iio/dac/ad3552r-hs.c index a9578afa7015..6bc64f53bce9 100644 --- a/drivers/iio/dac/ad3552r-hs.c +++ b/drivers/iio/dac/ad3552r-hs.c @@ -549,7 +549,7 @@ static ssize_t ad3552r_hs_write_data_source(struct file *f, guard(mutex)(&st->lock); - if (count >= sizeof(buf)) + if (*ppos != 0 || count >= sizeof(buf)) return -ENOSPC; ret = simple_write_to_buffer(buf, sizeof(buf) - 1, ppos, userbuf, -- 2.54.0