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 5E664182768; Sun, 24 Mar 2024 22:40:28 +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=1711320028; cv=none; b=i6MP9/81csjueVAQafHJN0kMGe2RQ79/WZ/vfytRIfDuZU2rN9ZVy3glXB3YDxXH0Sfk4/CUIea0dU8LYPv2LF/UjUs0SRip0ZVJHEsgIqPpWEdB/qjxKtNxf3mncUKUk8PHvvHl3sU6CG3Ph64HZL9zjwqv85TT5ho3+A2skFc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711320028; c=relaxed/simple; bh=hP68GkQ2L6JTHbh2rG6h+rkhITHFGKUHyafkXz2mEaQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=AEpvVBndloeOcQbYVMECZnpBMhfb6TzlTeEYcy9PADeMeWdNpnyMZ1n4l8jHEDowJSWcNjo5qADtnLxeBICyarqpJFKqhkkEp2ZAb7k8imbcZqFKgYsg5mKlycvdqlolaxbS6zbAeLzYrAvYNrk794CYurE7U0skNSc6rgIkg+8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=WtuT8brS; 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="WtuT8brS" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 88274C433F1; Sun, 24 Mar 2024 22:40:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1711320028; bh=hP68GkQ2L6JTHbh2rG6h+rkhITHFGKUHyafkXz2mEaQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=WtuT8brSgOw50Z2ohzKv7FMKLWkuPAAWt1MPOE1d62hH85u7eTzXvayuZ0vjRRafa p9pkaoQeC/Y22t5JBGmYDiKAcj/lq/9vjgMv3bzLb3iWP1Gm/xqjz/pX5jko05ETtx I57vTiWb2FJ5FYhw7vLjRUp9wJIi1WXmQUobhE7Lzf3FVEfxyWCyxp0qveZhDxRUsf Tow6N9k2FotDTWalBNbBk77kp1K/YjjLHaNpaUgdIFJkwYJrhHjFXMqm74ZxF4xKiY jdZFuwuP3yhhj2VykHgrXvidSB9bUWDUqeJqKy35RVfBIB9c8QLKE/+/XHl6mLybqi lPT3DXtiZ/zkA== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Viresh Kumar , kernel test robot , Dhruva Gole , Sasha Levin Subject: [PATCH 6.8 336/715] OPP: debugfs: Fix warning around icc_get_name() Date: Sun, 24 Mar 2024 18:28:35 -0400 Message-ID: <20240324223455.1342824-337-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240324223455.1342824-1-sashal@kernel.org> References: <20240324223455.1342824-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit From: Viresh Kumar [ Upstream commit 28330ceb953e39880ea77da4895bb902a1244860 ] If the kernel isn't built with interconnect support, icc_get_name() returns NULL and we get following warning: drivers/opp/debugfs.c: In function 'bw_name_read': drivers/opp/debugfs.c:43:42: error: '%.62s' directive argument is null [-Werror=format-overflow=] i = scnprintf(buf, sizeof(buf), "%.62s\n", icc_get_name(path)); Fix it. Reported-by: kernel test robot Closes: https://lore.kernel.org/oe-kbuild-all/202402141313.81ltVF5g-lkp@intel.com/ Fixes: 0430b1d5704b0 ("opp: Expose bandwidth information via debugfs") Signed-off-by: Viresh Kumar Reviewed-by: Dhruva Gole Signed-off-by: Sasha Levin --- drivers/opp/debugfs.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/opp/debugfs.c b/drivers/opp/debugfs.c index ec030b19164a3..f157fb50be50c 100644 --- a/drivers/opp/debugfs.c +++ b/drivers/opp/debugfs.c @@ -37,10 +37,12 @@ static ssize_t bw_name_read(struct file *fp, char __user *userbuf, size_t count, loff_t *ppos) { struct icc_path *path = fp->private_data; + const char *name = icc_get_name(path); char buf[64]; - int i; + int i = 0; - i = scnprintf(buf, sizeof(buf), "%.62s\n", icc_get_name(path)); + if (name) + i = scnprintf(buf, sizeof(buf), "%.62s\n", name); return simple_read_from_buffer(userbuf, count, ppos, buf, i); } -- 2.43.0