| 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
| ||
|
Message-Id: <cover.1313791722.git.mina86@mina86.com>
Date: Sat, 20 Aug 2011 00:32:58 +0200
From: Michal Nazarewicz <mnazarewicz@...gle.com>
To: Alan Stern <stern@...land.harvard.edu>,
"Sebastian Andrzej Siewior" <bigeasy@...utronix.de>,
"Yang Rui Rui" <ruirui.r.yang@...to.com>,
"Dave Young" <hidave.darkstar@...il.com>
Cc: Felipe Balbi <balbi@...com>, linux-usb@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [PATCHv3 0/4] Figuring out speed refactorisation
From: Michal Nazarewicz <mina86@...a86.com>
Michal Nazarewicz (4):
usb: Provide usb_device_speed_name() function
Just a little helper.
usb: gadget: replace "is_dualspeed" with "max_speed"
This replaces "is_dualspeed" with "max_speed" so that one
can encode in the field whether given UDC is super speed
as well.
Without this change, we would have to add a "is_superspeed"
field since after removal of USB_GADGET_SUPERSPEED Kconfig
option current implementation of gadget_is_superspeed()
won't work.
usb: gadget: rename usb_gadget_driver::speed to max_speed
I don't have strong feelings about this patch, but the current
name of the usb_gadget_driver::speed field may lead to some
confusion.
Changing it to "max_speed" should be apparent that it describes
the maximum speed the gadget driver supports.
This comes in pair with usb_gadget::max_speed and
usb_composite_driver::max_speed.
usb: gadget: get rid of USB_GADGET_{DUAL,SUPER}SPEED
Removes the USB_GADGET_DUALSPEED and USB_GADGET_SUPERSPEED Kconfig
options. In most cases, they were checked just for optimisation
(ie. if UDC was not dual speed, gadget drivers could skip some of
the logic) so in the end this change was just about deleting
#ifdefs.
Making those changes has exposed problems with some UDC drivers,
namely:
$ g grep -A3 'max_speed.*[=!]=.*USB_SPEED_HIGH'
drivers/usb/gadget/amd5536udc.c: || driver->max_speed != USB_SPEED_HIGH)
drivers/usb/gadget/amd5536udc.c- return -EINVAL;
drivers/usb/gadget/amd5536udc.c- if (!dev)
drivers/usb/gadget/amd5536udc.c- return -ENODEV;
--
drivers/usb/gadget/m66592-udc.c: || driver->max_speed != USB_SPEED_HIGH
drivers/usb/gadget/m66592-udc.c- || !bind
drivers/usb/gadget/m66592-udc.c- || !driver->setup)
drivers/usb/gadget/m66592-udc.c- return -EINVAL;
--
drivers/usb/gadget/net2272.c: driver->max_speed != USB_SPEED_HIGH)
drivers/usb/gadget/net2272.c- return -EINVAL;
drivers/usb/gadget/net2272.c- if (!dev)
drivers/usb/gadget/net2272.c- return -ENODEV;
--
drivers/usb/gadget/net2280.c: || driver->max_speed != USB_SPEED_HIGH
drivers/usb/gadget/net2280.c- || !bind || !driver->setup)
drivers/usb/gadget/net2280.c- return -EINVAL;
drivers/usb/gadget/net2280.c- if (!dev)
--
drivers/usb/gadget/r8a66597-udc.c: || driver->max_speed != USB_SPEED_HIGH
drivers/usb/gadget/r8a66597-udc.c- || !bind
drivers/usb/gadget/r8a66597-udc.c- || !driver->setup)
drivers/usb/gadget/r8a66597-udc.c- return -EINVAL;
All those drivers require usb_gadget_driver::max_speed to be set to
USB_SPEED_HIGH. This basically means that gmidi (which sets it to
USB_SPEED_FULL), g_ether and g_zero (which set it to USB_SPEED_SUPER)
won't work with those UDCs:
$ g grep -e '\.max_speed.*=.*USB_SPEED_SUPER' -e '\.max_speed.*=.*USB_SPEED_FULL'
dummy_hcd.c: dum->gadget.max_speed = USB_SPEED_SUPER;;
ether.c: .max_speed = USB_SPEED_SUPER,
gmidi.c: .max_speed = USB_SPEED_FULL,
goku_udc.c: dev->gadget.max_speed = USB_SPEED_FULL;
omap_udc.c: udc->gadget.max_speed = USB_SPEED_FULL;
zero.c: .max_speed = USB_SPEED_SUPER,
So as far as I can tell, UDC drivers for those need to be fixed (but
that's probably scope for another patchset). Or am I missing
something?
Like before, this has been compile-tested only.
drivers/usb/Makefile | 3 ++
drivers/usb/common.c | 24 +++++++++++++++++
drivers/usb/gadget/Kconfig | 30 ----------------------
drivers/usb/gadget/amd5536udc.c | 4 +-
drivers/usb/gadget/atmel_usba_udc.c | 2 +-
drivers/usb/gadget/ci13xxx_udc.c | 9 ++++--
drivers/usb/gadget/composite.c | 9 +------
drivers/usb/gadget/dbgp.c | 2 +-
drivers/usb/gadget/dummy_hcd.c | 15 +++++------
drivers/usb/gadget/epautoconf.c | 6 ++--
drivers/usb/gadget/file_storage.c | 6 +---
drivers/usb/gadget/fsl_udc_core.c | 2 +-
drivers/usb/gadget/fusb300_udc.c | 2 +-
drivers/usb/gadget/gmidi.c | 2 +-
drivers/usb/gadget/goku_udc.c | 3 +-
drivers/usb/gadget/inode.c | 14 +---------
drivers/usb/gadget/langwell_udc.c | 2 +-
drivers/usb/gadget/m66592-udc.c | 4 +-
drivers/usb/gadget/mv_udc_core.c | 2 +-
drivers/usb/gadget/net2272.c | 4 +-
drivers/usb/gadget/net2280.c | 4 +-
drivers/usb/gadget/omap_udc.c | 1 +
drivers/usb/gadget/pch_udc.c | 4 +-
drivers/usb/gadget/printer.c | 43 +++++--------------------------
drivers/usb/gadget/r8a66597-udc.c | 4 +-
drivers/usb/gadget/s3c-hsotg.c | 2 +-
drivers/usb/gadget/s3c-hsudc.c | 2 +-
drivers/usb/gadget/u_ether.c | 7 -----
drivers/usb/gadget/udc-core.c | 41 +++++++++++++++---------------
drivers/usb/musb/musb_gadget.c | 2 +-
drivers/usb/renesas_usbhs/mod_gadget.c | 2 +-
include/linux/usb/ch9.h | 8 ++++++
include/linux/usb/gadget.h | 29 +++++----------------
33 files changed, 115 insertions(+), 179 deletions(-)
create mode 100644 drivers/usb/common.c
--
1.7.3.1
--
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/
Powered by blists - more mailing lists