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 3235E415F17; Tue, 21 Jul 2026 18:56:17 +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=1784660178; cv=none; b=iKuGNtkU0gKV40r3w8dZ5Efgxtx/D7H0vDyWudTwFRPQKyIPKWrRm+McsCBuXeKxayWmOaFg1Zh0/givtWkKkbIYVM1Yx75CZ1nhtRIfqxGrBEMH4Mc53PObUNZaCu79B9iy878oXbbpotAxxp/4PIFVRWMOldNWnqa44R0uvQg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784660178; c=relaxed/simple; bh=ToOLMBYCIBguHWZ/PwrNFZTvk4FiZcEGvPfpRa+Lt30=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ocJUZajLkV3U5v4thGDeLjr/ORAW+sm9cUBvZtpnueS1g/qs8EbRGEmv2oj2x3aVYDtQida8cyOxjDgptwlhS+V+VYAaQhg7oOVXTumZMI8mJWt58knPPK54AwwvN/WSWrR1S4DsMtXajs2OxAiL07kJ2zcOEtYjQEacAt7Ullk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=H3cB6QnI; 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="H3cB6QnI" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8EB261F000E9; Tue, 21 Jul 2026 18:56:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1784660177; bh=eALqQUurzd3QqODYa4mwuJbB7QkQUIkcCaGQfu6ZYjE=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=H3cB6QnIp6VQlsz3pmUELA57MFq2ytrDgoK02Zhd3fQiKF2Jw8H6FxFPi7vmaAmbd vdMW9hpGyZnmA2Fp9uhzceQn4yuZ9PFdHrOIJiqIIUYa5wrsJnSkM9fMWEx/Ljm4+g AdSakQlGFVnmmZG2DJ9WOWNUTzkYRZycYXtTtkjs= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Dan Carpenter , Manivannan Sadhasivam , Hans Zhang <18255117159@163.com>, Sasha Levin Subject: [PATCH 7.1 0882/2077] PCI: dwc: Fix signedness bug in fault injection test code Date: Tue, 21 Jul 2026 17:09:15 +0200 Message-ID: <20260721152613.607783506@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260721152552.646164743@linuxfoundation.org> References: <20260721152552.646164743@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 7.1-stable review patch. If anyone has any objections, please let me know. ------------------ From: Dan Carpenter [ Upstream commit 94ac934d2c054fba4a22d8dc84749094c5fa0ec0 ] The kstrtou32() function returns negative error code or zero on success. However, in this case "val" is a u32 and the function returns signed long, so negative error codes from kstrtou32() are returned as high positive values. Store the error code in an int instead. Fixes: d20ee8e2dbd6 ("PCI: dwc: Add debugfs based Error Injection support for DWC") Signed-off-by: Dan Carpenter Signed-off-by: Manivannan Sadhasivam Reviewed-by: Hans Zhang <18255117159@163.com> Link: https://patch.msgid.link/agL-Uwfn26SI4Gb0@stanley.mountain Signed-off-by: Sasha Levin --- drivers/pci/controller/dwc/pcie-designware-debugfs.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/pci/controller/dwc/pcie-designware-debugfs.c b/drivers/pci/controller/dwc/pcie-designware-debugfs.c index d0884253be97e4..4bfc1748f2d737 100644 --- a/drivers/pci/controller/dwc/pcie-designware-debugfs.c +++ b/drivers/pci/controller/dwc/pcie-designware-debugfs.c @@ -306,6 +306,7 @@ static ssize_t err_inj_write(struct file *file, const char __user *buf, u32 val, counter, vc_num, err_group, type_mask; int val_diff = 0; char *kern_buf; + int ret; err_group = err_inj_list[pdata->idx].err_inj_group; type_mask = err_inj_type_mask[err_group]; @@ -327,10 +328,10 @@ static ssize_t err_inj_write(struct file *file, const char __user *buf, return -EINVAL; } } else { - val = kstrtou32(kern_buf, 0, &counter); - if (val) { + ret = kstrtou32(kern_buf, 0, &counter); + if (ret) { kfree(kern_buf); - return val; + return ret; } } -- 2.53.0