linux-kernel - [PATCH v2 1/1] media: atomisp_gmin_platform: Switch to use acpi_evaluate_dsm

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, 30 Jul 2022 18:59:04 +0300
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Mauro Carvalho Chehab <mchehab@...nel.org>,
        Hans de Goede <hdegoede@...hat.com>,
        linux-media@...r.kernel.org, linux-staging@...ts.linux.dev,
        linux-kernel@...r.kernel.org
Cc:     Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: [PATCH v2 1/1] media: atomisp_gmin_platform: Switch to use acpi_evaluate_dsm_typed()

The acpi_evaluate_dsm_typed() provides a way to check the type of the
object evaluated by _DSM call. Use it instead of open coded variant.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
v2: fixed 80 character overgo (Sakari)
 drivers/staging/media/atomisp/pci/atomisp_gmin_platform.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/drivers/staging/media/atomisp/pci/atomisp_gmin_platform.c b/drivers/staging/media/atomisp/pci/atomisp_gmin_platform.c
index bf527b366ab3..f7fc5137199c 100644
--- a/drivers/staging/media/atomisp/pci/atomisp_gmin_platform.c
+++ b/drivers/staging/media/atomisp/pci/atomisp_gmin_platform.c
@@ -1207,16 +1207,14 @@ static int gmin_get_config_dsm_var(struct device *dev,
 	if (!strcmp(var, "CamClk"))
 		return -EINVAL;
 
-	obj = acpi_evaluate_dsm(handle, &atomisp_dsm_guid, 0, 0, NULL);
+	/* Return on unexpected object type */
+	obj = acpi_evaluate_dsm_typed(handle, &atomisp_dsm_guid, 0, 0, NULL,
+				      ACPI_TYPE_PACKAGE);
 	if (!obj) {
 		dev_info_once(dev, "Didn't find ACPI _DSM table.\n");
 		return -EINVAL;
 	}
 
-	/* Return on unexpected object type */
-	if (obj->type != ACPI_TYPE_PACKAGE)
-		return -EINVAL;
-
 #if 0 /* Just for debugging purposes */
 	for (i = 0; i < obj->package.count; i++) {
 		union acpi_object *cur = &obj->package.elements[i];
-- 
2.35.1