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bh=3fI/wStOnID0RkF6ajH6XFxYRunB4UiMDznXWTD+pWQ=; b=vCZxt+9Kv9qamNjha5CGNaFOfEqcMDwHuowsF6cX1TTTJVQNEMR7mJH7HNciGOu1y2UJF8D1B9X+oZwRsiNb2tPJSq13ljPFw2RFQnzXEIl0RikBm28born5YQRa6FA1g2/y6zaL0wXptopc23eW4/5AeA4/Ud1+T/wU5CpgxNg= X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 165.204.84.17) smtp.mailfrom=amd.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=amd.com; Received-SPF: pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) client-ip=192.237.175.120; envelope-from=xen-devel-bounces@lists.xenproject.org; helo=lists.xenproject.org; Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=SATLEXMB04.amd.com; pr=C From: Ayan Kumar Halder To: CC: , , , , , , , , , , Ayan Kumar Halder Subject: [XEN v3 2/3] xen/drivers: ns16550: Fix the use of simple_strtoul() for extracting u64 Date: Mon, 23 Jan 2023 13:44:50 +0000 Message-ID: <20230123134451.47185-3-ayan.kumar.halder@amd.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20230123134451.47185-1-ayan.kumar.halder@amd.com> References: <20230123134451.47185-1-ayan.kumar.halder@amd.com> MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BL02EPF0000C409:EE_|BY5PR12MB4950:EE_ X-MS-Office365-Filtering-Correlation-Id: 3fc4c396-6b08-48a6-0378-08dafd48170f X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 23 Jan 2023 13:45:29.2366 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 3fc4c396-6b08-48a6-0378-08dafd48170f X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BL02EPF0000C409.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BY5PR12MB4950 X-ZohoMail-DKIM: pass (identity @amd.com) X-ZM-MESSAGEID: 1674481560264100001 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" One should be using simple_strtoull() ( instead of simple_strtoul() ) to assign value to 'u64' variable. The reason being u64 can be represented by 'unsigned long long' on all the platforms (ie Arm32, Arm64 and x86). Signed-off-by: Ayan Kumar Halder Reviewed-by: Jan Beulich Suggested-by: Jan Beulich --- Changes from - v1,v2 - NA (This patch is introduced in v3). xen/drivers/char/ns16550.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/xen/drivers/char/ns16550.c b/xen/drivers/char/ns16550.c index 58d0ccd889..43e1f971ab 100644 --- a/xen/drivers/char/ns16550.c +++ b/xen/drivers/char/ns16550.c @@ -1532,7 +1532,7 @@ static bool __init parse_positional(struct ns16550 *u= art, char **str) else #endif { - uart->io_base =3D simple_strtoul(conf, &conf, 0); + uart->io_base =3D simple_strtoull(conf, &conf, 0); } } =20 @@ -1603,7 +1603,7 @@ static bool __init parse_namevalue_pairs(char *str, s= truct ns16550 *uart) "Can't use io_base with dev=3Dpci or dev=3Damt opti= ons\n"); break; } - uart->io_base =3D simple_strtoul(param_value, NULL, 0); + uart->io_base =3D simple_strtoull(param_value, NULL, 0); break; =20 case irq: --=20 2.17.1