linux-kernel - [PATCH v1 1/1] ACPI: scan: Utilize match

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]

Date:   Sat, 10 Apr 2021 17:02:53 +0300
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
        linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Len Brown <lenb@...nel.org>,
        Andy Shevchenko <andy.shevchenko@...il.com>
Subject: [PATCH v1 1/1] ACPI: scan: Utilize match_string() API

We have already an API to match a string in the array of strings.
Utilize it instead of open coded analogues.

Signed-off-by: Andy Shevchenko <andy.shevchenko@...il.com>
---
 drivers/acpi/scan.c | 22 ++++++++++------------
 1 file changed, 10 insertions(+), 12 deletions(-)

diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index b1d1f1a8ce69..bba6b529cf6c 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -756,27 +756,25 @@ static bool acpi_info_matches_ids(struct acpi_device_info *info,
 				  const char * const ids[])
 {
 	struct acpi_pnp_device_id_list *cid_list = NULL;
-	int i;
+	int i, index;
 
 	if (!(info->valid & ACPI_VALID_HID))
 		return false;
 
+	index = match_string(ids, -1, info->hardware_id.string);
+	if (index >= 0)
+		return true;
+
 	if (info->valid & ACPI_VALID_CID)
 		cid_list = &info->compatible_id_list;
 
-	for (i = 0; ids[i]; i++) {
-		int j;
+	if (!cid_list)
+		return false;
 
-		if (!strcmp(info->hardware_id.string, ids[i]))
+	for (i = 0; i < cid_list->count; i++) {
+		index = match_string(ids, -1, cid_list->ids[i].string);
+		if (index >= 0)
 			return true;
-
-		if (!cid_list)
-			continue;
-
-		for (j = 0; j < cid_list->count; j++) {
-			if (!strcmp(cid_list->ids[j].string, ids[i]))
-				return true;
-		}
 	}
 
 	return false;
-- 
2.31.1