All of lore.kernel.org
 help / color / mirror / Atom feed
From: Witold Lipieta <witold.lipieta@thaumatec.com>
To: USB development list <linux-usb@vger.kernel.org>
Cc: Witold Lipieta <witold.lipieta@thaumatec.com>
Subject: [PATCH] usb-storage: Add ignore-residue quirk for NXP PN7462AU
Date: Tue,  9 Aug 2022 13:29:11 +0200	[thread overview]
Message-ID: <20220809112911.462776-1-witold.lipieta@thaumatec.com> (raw)

This is USB mass storage primary boot loader for code download on
NXP PN7462AU.

Without the quirk it is impossible to write whole memory at once as
device restarts during the write due to bogus residue values reported.

Signed-off-by: Witold Lipieta <witold.lipieta@thaumatec.com>
---
Output from /sys/kernel/debug/usb/devices:
T:  Bus=02 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#=  4 Spd=12   MxCh= 0
D:  Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs=  1
P:  Vendor=1fc9 ProdID=0117 Rev= 1.00
S:  Manufacturer=NXP
S:  Product=PN7462AU
C:* #Ifs= 1 Cfg#= 1 Atr=c0 MxPwr=100mA
I:* If#= 0 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=06 Prot=50 Driver=usb-storage
E:  Ad=81(I) Atr=02(Bulk) MxPS=  64 Ivl=0ms
E:  Ad=01(O) Atr=02(Bulk) MxPS=  64 Ivl=0ms
 drivers/usb/storage/unusual_devs.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/usb/storage/unusual_devs.h b/drivers/usb/storage/unusual_devs.h
index b6a9a7451620..ee6923b6ab31 100644
--- a/drivers/usb/storage/unusual_devs.h
+++ b/drivers/usb/storage/unusual_devs.h
@@ -2265,6 +2265,13 @@ UNUSUAL_DEV( 0x1e74, 0x4621, 0x0000, 0x0000,
 		USB_SC_DEVICE, USB_PR_DEVICE, NULL,
 		US_FL_BULK_IGNORE_TAG | US_FL_MAX_SECTORS_64 ),
 
+/* Reported by Witold Lipieta <witold.lipieta@thaumatec.com> */
+UNUSUAL_DEV( 0x1fc9, 0x0117, 0x0100, 0x0100,
+		"NXP Semiconductors",
+		"PN7462AU",
+		USB_SC_DEVICE, USB_PR_DEVICE, NULL,
+		US_FL_IGNORE_RESIDUE ),
+
 /* Supplied with some Castlewood ORB removable drives */
 UNUSUAL_DEV(  0x2027, 0xa001, 0x0000, 0x9999,
 		"Double-H Technology",
-- 
2.34.1


             reply	other threads:[~2022-08-09 11:29 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-08-09 11:29 Witold Lipieta [this message]
2022-08-09 19:28 ` [PATCH] usb-storage: Add ignore-residue quirk for NXP PN7462AU Alan Stern

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20220809112911.462776-1-witold.lipieta@thaumatec.com \
    --to=witold.lipieta@thaumatec.com \
    --cc=linux-usb@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.