From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tatyana Brokhman Subject: [RFC/PATCH 5/5] uas: HACK needed for UAS host. Date: Mon, 7 Mar 2011 18:48:51 +0200 Message-ID: <1299516532-28866-1-git-send-email-tlinder@codeaurora.org> Return-path: Received: from wolverine01.qualcomm.com ([199.106.114.254]:6366 "EHLO wolverine01.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752663Ab1CGQtA (ORCPT ); Mon, 7 Mar 2011 11:49:00 -0500 Sender: linux-arm-msm-owner@vger.kernel.org List-Id: linux-arm-msm@vger.kernel.org To: gregkh@suse.de Cc: linux-arm-msm@vger.kernel.org, ablay@codeaurora.org, Tatyana Brokhman , "open list:USB GADGET/PERIPH..." , open list 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 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