linux-kernel - [PATCH 1/3] ACPI: Remove acpi_has_method() call from acpi

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

Message-Id: <20190722023530.67676-2-skunberg.kelsey@gmail.com>
Date:   Sun, 21 Jul 2019 20:35:28 -0600
From:   Kelsey Skunberg <skunberg.kelsey@...il.com>
To:     rjw@...ysocki.net, lenb@...nel.org, linux-acpi@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     skhan@...uxfoundation.org,
        linux-kernel-mentees@...ts.linuxfoundation.org, bjorn@...gaas.com,
        skunberg.kelsey@...il.com
Subject: [PATCH 1/3] ACPI: Remove acpi_has_method() call from acpi_adxl.c

acpi_check_dsm() will already return an error if the DSM method does not
exist. Checking if the DSM method exists before the acpi_check_dsm() call
is not needed. Remove acpi_has_method() call to avoid additional work.

Signed-off-by: Kelsey Skunberg <skunberg.kelsey@...il.com>
---
 drivers/acpi/acpi_adxl.c | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/drivers/acpi/acpi_adxl.c b/drivers/acpi/acpi_adxl.c
index 13c8f7b50c46..89aac15663fd 100644
--- a/drivers/acpi/acpi_adxl.c
+++ b/drivers/acpi/acpi_adxl.c
@@ -148,11 +148,6 @@ static int __init adxl_init(void)
 		return -ENODEV;
 	}
 
-	if (!acpi_has_method(handle, "_DSM")) {
-		pr_info("No DSM method\n");
-		return -ENODEV;
-	}
-
 	if (!acpi_check_dsm(handle, &adxl_guid, ADXL_REVISION,
 			    ADXL_IDX_GET_ADDR_PARAMS |
 			    ADXL_IDX_FORWARD_TRANSLATE)) {
-- 
2.20.1