linux-kernel - [PATCH v2 06/15] platform/chrome: cros_ec_proto: use cros_ec_map

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]

Date:   Tue,  7 Jun 2022 14:56:30 +0000
From:   Tzung-Bi Shih <tzungbi@...nel.org>
To:     bleung@...omium.org, groeck@...omium.org
Cc:     chrome-platform@...ts.linux.dev, linux-kernel@...r.kernel.org,
        tzungbi@...nel.org
Subject: [PATCH v2 06/15] platform/chrome: cros_ec_proto: use cros_ec_map_error()

Use cros_ec_map_error() in cros_ec_get_host_event_wake_mask().

The behavior of cros_ec_get_host_event_wake_mask() slightly changed.  It
is acceptable because the caller only needs it returns negative integers
for indicating errors.  Especially, the EC_RES_INVALID_COMMAND still
maps to -EOPNOTSUPP.

Reviewed-by: Guenter Roeck <groeck@...omium.org>
Signed-off-by: Tzung-Bi Shih <tzungbi@...nel.org>
---
Changes from v1:
- Add R-b tag.

 drivers/platform/chrome/cros_ec_proto.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/drivers/platform/chrome/cros_ec_proto.c b/drivers/platform/chrome/cros_ec_proto.c
index 1b851dcd20c9..71ba6a56ad7c 100644
--- a/drivers/platform/chrome/cros_ec_proto.c
+++ b/drivers/platform/chrome/cros_ec_proto.c
@@ -247,7 +247,7 @@ static int cros_ec_get_host_event_wake_mask(struct cros_ec_device *ec_dev,
 					    uint32_t *mask)
 {
 	struct ec_response_host_event_mask *r;
-	int ret;
+	int ret, mapped;
 
 	msg->command = EC_CMD_HOST_EVENT_GET_WAKE_MASK;
 	msg->version = 0;
@@ -256,10 +256,9 @@ static int cros_ec_get_host_event_wake_mask(struct cros_ec_device *ec_dev,
 
 	ret = send_command(ec_dev, msg);
 	if (ret >= 0) {
-		if (msg->result == EC_RES_INVALID_COMMAND)
-			return -EOPNOTSUPP;
-		if (msg->result != EC_RES_SUCCESS)
-			return -EPROTO;
+		mapped = cros_ec_map_error(msg->result);
+		if (mapped)
+			return mapped;
 	}
 	if (ret > 0) {
 		r = (struct ec_response_host_event_mask *)msg->data;
-- 
2.36.1.255.ge46751e96f-goog