From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 999CE273D77; Sun, 1 Mar 2026 01:52:45 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772329965; cv=none; b=NtWBmhWR+uKK9vhikMYgkVHYuGCWYS56Oq4rbTRITCcvJX+Yglhj/Yf6ej1oNTz52YKmMoasQbZfbLgsRCFuVuvYp56VRMGIDxQisr0uKsmciWXMSbnn8C7eZruwvOsXfIw1cbVk9SWpYnWJsUH9AgaJ9guCGYT7n8jDvmZUTxs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772329965; c=relaxed/simple; bh=Zy0+j/a4oQ4elNvwGwcDcZFtBnfiS3PlWx8hJnVNULk=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=SOy6N31gMlpGWkE5OTNySkc4+DZ73uYam0yyouLyNZDP3Hg3VD2ubGeL79D2cD9LKX2z47GXUd+xXyTE01/XexApC3ksvOY2pT1lmcSHrRZsEbOy7vok19ovzfvFz/S3fEf1Tl1r0YqfDS7S4yjuKUy7XKCvvQnp4+10D+5r8NU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=YFWlzt4d; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="YFWlzt4d" Received: by smtp.kernel.org (Postfix) with ESMTPSA id CB7D0C19421; Sun, 1 Mar 2026 01:52:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772329965; bh=Zy0+j/a4oQ4elNvwGwcDcZFtBnfiS3PlWx8hJnVNULk=; h=From:To:Cc:Subject:Date:From; b=YFWlzt4d5K7NOR+eDz/lakrx+LLBlVtE/m6ANLWxKXn8RBz4/HqhoNXvw7LewfjwI YkniGjJ5ZP0TLAtEaPcxQ1/cKMBSqOTWZO4v/IIZeY+zj2p2qusdK8W63J+j6wgT4c PgYHZR2RrhI/yA/L0qrZmr/mlk4t5J930nXkg0pkfSj/xO93InzeUFeJjopecNtr04 QveqG2E8jZYVSyAs4vjG7pDJtEQVLd7gqvWJTA071PYOqRETPyxboq5IBcP3vVQ8v6 NCd2MuuLSuCOQOd46oFNxUqo6oZ5QeqjM31lMhnaNlP5vWICb21RY2J8WCsGuZ9GA8 Gog7AOO0k0BXg== From: Sasha Levin To: stable@vger.kernel.org, antoniu.miclaus@analog.com Cc: Andy Shevchenko , Stable@vger.kernel.org, Jonathan Cameron , linux-iio@vger.kernel.org Subject: FAILED: Patch "iio: gyro: itg3200: Fix unchecked return value in read_raw" failed to apply to 5.15-stable tree Date: Sat, 28 Feb 2026 20:52:43 -0500 Message-ID: <20260301015243.1719320-1-sashal@kernel.org> X-Mailer: git-send-email 2.51.0 Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Patchwork-Hint: ignore X-stable: review Content-Transfer-Encoding: 8bit The patch below does not apply to the 5.15-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to . Thanks, Sasha ------------------ original commit in Linus's tree ------------------ >From b79b24f578cdb2d657db23e5fafe82c7e6a36b72 Mon Sep 17 00:00:00 2001 From: Antoniu Miclaus Date: Thu, 29 Jan 2026 17:01:45 +0200 Subject: [PATCH] iio: gyro: itg3200: Fix unchecked return value in read_raw The return value from itg3200_read_reg_s16() is stored in ret but never checked. The function unconditionally returns IIO_VAL_INT, ignoring potential I2C read failures. This causes garbage data to be returned to userspace when the read fails, with no error reported. Add proper error checking to propagate the failure to callers. Fixes: 9dbf091da080 ("iio: gyro: Add itg3200") Signed-off-by: Antoniu Miclaus Reviewed-by: Andy Shevchenko Cc: Signed-off-by: Jonathan Cameron --- drivers/iio/gyro/itg3200_core.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/iio/gyro/itg3200_core.c b/drivers/iio/gyro/itg3200_core.c index cd8a2dae56cd9..bfe95ec1abda9 100644 --- a/drivers/iio/gyro/itg3200_core.c +++ b/drivers/iio/gyro/itg3200_core.c @@ -93,6 +93,8 @@ static int itg3200_read_raw(struct iio_dev *indio_dev, case IIO_CHAN_INFO_RAW: reg = (u8)chan->address; ret = itg3200_read_reg_s16(indio_dev, reg, val); + if (ret) + return ret; return IIO_VAL_INT; case IIO_CHAN_INFO_SCALE: *val = 0; -- 2.51.0