linux-kernel - [PATCH 0/1] xhci: Recognize USB 3.0 devices as superspeed at powerup

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: <1345654310-5895-1-git-send-email-manoj.iyer@canonical.com>
Date:	Wed, 22 Aug 2012 11:51:50 -0500
From:	manoj.iyer@...onical.com
To:	linux-kernel@...r.kernel.org
Cc:	sarah.a.sharp@...ux.intel.com, gregkh@...uxfoundation.org,
	linux-usb@...r.kernel.org, andiry@...il.com
Subject: [PATCH 0/1] xhci: Recognize USB 3.0 devices as superspeed at powerup

From: Manoj Iyer <manoj.iyer@...onical.com>

On Intel Panther Point chipset USB 3.0 devices show up as
high-speed devices on powerup, but after an s3 cycle they are
correctly recognized as SuperSpeed. At powerup switch the port
to xHCI so that USB 3.0 devices are correctly recognized.

This is a second attempt at fixing this based on review comments
to my earlier patch from Andiry Xu

BugLink: http://bugs.launchpad.net/bugs/1000424


Test results after applying patch
==================================

USB 3.0 device connected to SuperSpeed port
--------------------------------------------
[   34.694033] usb 4-1: new SuperSpeed USB device number 2 using xhci_hcd
[   34.712925] scsi6 : usb-storage 4-1:1.0
[   35.709947] scsi 6:0:0:0: Direct-Access     JetFlash Transcend 16GB   1.00 PQ: 0 ANSI: 5
[   35.710886] sd 6:0:0:0: Attached scsi generic sg3 type 0
[   35.711475] sd 6:0:0:0: [sdc] 30871552 512-byte logical blocks: (15.8 GB/14.7 GiB)
[   35.712721] sd 6:0:0:0: [sdc] Write Protect is off
[   35.712725] sd 6:0:0:0: [sdc] Mode Sense: 23 00 00 00
[   35.712841] sd 6:0:0:0: [sdc] Write cache: disabled, read cache: disabled, doesn't support DPO or FUA
[   35.714627]  sdc: sdc1

USB 3.0 device connected to highspeed port
-------------------------------------------
[  148.128616] usb 1-1.2: new high-speed USB device number 5 using ehci_hcd
[  148.226040] scsi7 : usb-storage 1-1.2:1.0
[  149.225645] scsi 7:0:0:0: Direct-Access     JetFlash Transcend 16GB   1.00 PQ: 0 ANSI: 5
[  149.227690] sd 7:0:0:0: Attached scsi generic sg3 type 0
[  149.230196] sd 7:0:0:0: [sdc] 30871552 512-byte logical blocks: (15.8 GB/14.7 GiB)
[  149.230555] sd 7:0:0:0: [sdc] Write Protect is off
[  149.230563] sd 7:0:0:0: [sdc] Mode Sense: 23 00 00 00
[  149.231333] sd 7:0:0:0: [sdc] Write cache: disabled, read cache: disabled, doesn't support DPO or FUA
[  149.235822]  sdc: sdc1
[  149.238035] sd 7:0:0:0: [sdc] Attached SCSI removable disk


Manoj Iyer (1):
  xhci: Recognize USB 3.0 devices as superspeed at powerup

 drivers/usb/host/pci-quirks.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

-- 
1.7.9.5

--
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/