linux-kernel - [ 038/108] HID: logitech: fix mask to enable DJ mode

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: <20121007225839.973788370@decadent.org.uk>
Date:	Sun, 07 Oct 2012 23:59:12 +0100
From:	Ben Hutchings <ben@...adent.org.uk>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Nestor Lopez Casado <nlopezcasad@...itech.com>,
	Jiri Kosina <jkosina@...e.cz>
Subject: [ 038/108] HID: logitech: fix mask to enable DJ mode

3.2-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Nestor Lopez Casado <nlopezcasad@...itech.com>

commit 765031668fb2b064aebd9a568e5ad794cbe3413a upstream.

The user can only experience the bug if she pairs 6 devices to a Unifying
receiver. The sixth paired device would not work.

The value changed is actually a bitmask that enables reporting from each
paired device. As the sixth bit was not set, the sixth device reports are
ignored by the receiver and never get to the driver.

Signed-off-by: Nestor Lopez Casado <nlopezcasad@...itech.com>

 drivers/hid/hid-logitech-dj.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
Signed-off-by: Jiri Kosina <jkosina@...e.cz>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 drivers/hid/hid-logitech-dj.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/hid/hid-logitech-dj.c b/drivers/hid/hid-logitech-dj.c
index 38b12e4..2b56efc 100644
--- a/drivers/hid/hid-logitech-dj.c
+++ b/drivers/hid/hid-logitech-dj.c
@@ -445,7 +445,7 @@ static int logi_dj_recv_switch_to_dj_mode(struct dj_receiver_dev *djrcv_dev,
 	dj_report.report_id = REPORT_ID_DJ_SHORT;
 	dj_report.device_index = 0xFF;
 	dj_report.report_type = REPORT_TYPE_CMD_SWITCH;
-	dj_report.report_params[CMD_SWITCH_PARAM_DEVBITFIELD] = 0x1F;
+	dj_report.report_params[CMD_SWITCH_PARAM_DEVBITFIELD] = 0x3F;
 	dj_report.report_params[CMD_SWITCH_PARAM_TIMEOUT_SECONDS] = (u8)timeout;
 	return logi_dj_recv_send_report(djrcv_dev, &dj_report);
 }


--
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/