linux-kernel - [PATCH] platform/x86: acerhdf: Cleanup str_starts

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <20220326020249.3266561-1-liwei391@huawei.com>
Date:   Sat, 26 Mar 2022 10:02:49 +0800
From:   Wei Li <liwei391@...wei.com>
To:     Peter Kaestle <peter@...e.net>,
        Hans de Goede <hdegoede@...hat.com>,
        Mark Gross <markgross@...nel.org>
CC:     <platform-driver-x86@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <rui.xiang@...wei.com>
Subject: [PATCH] platform/x86: acerhdf: Cleanup str_starts_with()

Since there is already a generic function strstarts() that check if a
string starts with a given prefix, cleanup str_starts_with().

Signed-off-by: Wei Li <liwei391@...wei.com>
---
 drivers/platform/x86/acerhdf.c | 21 +++------------------
 1 file changed, 3 insertions(+), 18 deletions(-)

diff --git a/drivers/platform/x86/acerhdf.c b/drivers/platform/x86/acerhdf.c
index 6b8b3ab8db48..3c589437b41e 100644
--- a/drivers/platform/x86/acerhdf.c
+++ b/drivers/platform/x86/acerhdf.c
@@ -584,21 +584,6 @@ static struct platform_driver acerhdf_driver = {
 	.remove = acerhdf_remove,
 };
 
-/* checks if str begins with start */
-static int str_starts_with(const char *str, const char *start)
-{
-	unsigned long str_len = 0, start_len = 0;
-
-	str_len = strlen(str);
-	start_len = strlen(start);
-
-	if (str_len >= start_len &&
-			!strncmp(str, start, start_len))
-		return 1;
-
-	return 0;
-}
-
 /* check hardware */
 static int __init acerhdf_check_hardware(void)
 {
@@ -651,9 +636,9 @@ static int __init acerhdf_check_hardware(void)
 		 * check if actual hardware BIOS vendor, product and version
 		 * IDs start with the strings of BIOS table entry
 		 */
-		if (str_starts_with(vendor, bt->vendor) &&
-				str_starts_with(product, bt->product) &&
-				str_starts_with(version, bt->version)) {
+		if (strstarts(vendor, bt->vendor) &&
+				strstarts(product, bt->product) &&
+				strstarts(version, bt->version)) {
 			found = 1;
 			break;
 		}
-- 
2.25.1