linux-kernel - [PATCH] HID: hid-sensor-hub: do not process feature reports in raw

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: <1363886546-6517-1-git-send-email-daniel.leung@linux.intel.com>
Date:	Thu, 21 Mar 2013 10:22:26 -0700
From:	daniel.leung@...ux.intel.com
To:	jkosina@...e.cz, srinivas.pandruvada@...el.com
Cc:	linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
	Daniel Leung <daniel.leung@...ux.intel.com>
Subject: [PATCH] HID: hid-sensor-hub: do not process feature reports in raw_event

From: Daniel Leung <daniel.leung@...ux.intel.com>

In sensor_hub_raw_event(), HID feature reports are ignored but are
still marked as processed. This causes the in-kernel struct not to be
updated. Any non-updated fields in the feature reports are zero, and
they are being sent to the device. This causes confusion in the
sensor hub firmware, and some sensors are not powered up as a result.

This changes the raw_event rountine to only process input reports,
and let the hid core handle the incoming feature reports.

The issue has been observed on Acer Iconia W700.

Signed-off-by: Daniel Leung <daniel.leung@...ux.intel.com>
---
 drivers/hid/hid-sensor-hub.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/hid/hid-sensor-hub.c b/drivers/hid/hid-sensor-hub.c
index ca749810..3f7df68 100644
--- a/drivers/hid/hid-sensor-hub.c
+++ b/drivers/hid/hid-sensor-hub.c
@@ -413,7 +413,7 @@ static int sensor_hub_raw_event(struct hid_device *hdev,
 			 report->id, size, report->type);
 	hid_dbg(hdev, "maxfield:%d\n", report->maxfield);
 	if (report->type != HID_INPUT_REPORT)
-		return 1;
+		return 0;
 
 	ptr = raw_data;
 	ptr++; /*Skip report id*/
-- 
1.8.1.5

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/