linux-kernel - [RFC/PATCH 5/5] uas: HACK needed for UAS host.

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: <1299516532-28866-1-git-send-email-tlinder@codeaurora.org>
Date:	Mon,  7 Mar 2011 18:48:51 +0200
From:	Tatyana Brokhman <tlinder@...eaurora.org>
To:	gregkh@...e.de
Cc:	linux-arm-msm@...r.kernel.org, ablay@...eaurora.org,
	Tatyana Brokhman <tlinder@...eaurora.org>,
	linux-usb@...r.kernel.org (open list:USB GADGET/PERIPH...),
	linux-kernel@...r.kernel.org (open list)
Subject: [RFC/PATCH 5/5] uas: HACK needed for UAS host.

REMOVE LATER ON!
In today's UAS host driver MODE SENSE command isn't handled correctly.
Each time after power up there is a unit attention condition of
RESET_OCCURRED that needs to be cleared (= acknowledged by the
host) by the MODE SENSE command.
Due to the above this patch resets the RESET_OCCURRED unit attention.

Signed-off-by: Tatyana Brokhman <tlinder@...eaurora.org>

diff --git a/drivers/usb/gadget/uasp_cmdiu.c b/drivers/usb/gadget/uasp_cmdiu.c
index 4df3d98..51eb132 100644
--- a/drivers/usb/gadget/uasp_cmdiu.c
+++ b/drivers/usb/gadget/uasp_cmdiu.c
@@ -83,6 +83,13 @@ static __u32 check_cmdiu(struct uasp_dev *udev,
 			curlun->lun->unit_attention_data = SS_NO_SENSE;
 			return ua_data;
 		}
+			/* HACK!!! REMOVE!!! */
+		if (curlun->lun->unit_attention_data == SS_RESET_OCCURRED &&
+			cmdiu->cdb[0] == INQUIRY) {
+			curlun->lun->unit_attention_data = SS_NO_SENSE;
+			DBG(udev->ucommon->common, "check_cmdiu() - "
+			       "HACK!!! RESETTING  unit attention condition\n");
+		}
 	}
 
 	if (curlun && !(curlun->lun->filp) && needs_medium) {
-- 
1.7.0.4

--
Sent by a Consultant for Qualcomm Innovation Center, Inc.
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum
--
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/