[PATCH v3 00/12] drivers: usb: misc: update to use usb_control_msg_{send|recv}() API

From: Anant Thazhemadam <anant.thazhemadam@gmail.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	"Gustavo A. R. Silva" <gustavoars@kernel.org>,
	Xu Wang <vulab@iscas.ac.cn>, Liu Shixin <liushixin2@huawei.com>,
	Peter Chen <peter.chen@nxp.com>,
	Minas Harutyunyan <hminas@synopsys.com>,
	Chunfeng Yun <chunfeng.yun@mediatek.com>,
	Lee Jones <lee.jones@linaro.org>, Tom Rix <trix@redhat.com>,
	Evgeny Novikov <novikov@ispras.ru>,
	Alan Stern <stern@rowland.harvard.edu>,
	Bixuan Cui <cuibixuan@huawei.com>,
	Anant Thazhemadam <anant.thazhemadam@gmail.com>
Cc: linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH v3 00/12] drivers: usb: misc: update to use usb_control_msg_{send|recv}() API
Date: Wed, 27 Jan 2021 00:03:51 +0530	[thread overview]
Message-ID: <20210126183403.911653-1-anant.thazhemadam@gmail.com> (raw)

The new usb_control_msg_{send|recv}() API provides an improved way of 
using usb_control_msg(). Using this, short reads/writes are considered
as errors, data can be used off the stack, and the need for the calling
function to create a raw usb pipe is eliminated.
This patch series aims to update existing instances of usb_control_msg() 
in drivers/usb/misc/* to usb_control_msg_{send|recv}() appropriately, and
also update the return value checking mechanisms in place (if any), as
necessary so nothing breaks.

Changes in v3:

  * idmouse, emi26 and emi62 are left unchanged, and are not updated.
    -> since control transfers in idmouse are without a data stage, there's no
       real advantage in using the new helper here.
    -> in emi26, and emi62, FW_LOAD_SIZE = 1048 (> 1024). Thus, if we try to use the
       new helpers, it will result in either build warnings, or memory being allocated.

  * Link to v2:
      https://lore.kernel.org/linux-usb/20201130013103.2580467-1-anant.thazhemadam@gmail.com/T/

Changes in v2:

  * Buffer variables that were previously dynamically allocated are no
    longer dynamically allocated unless they have a variable length
    (since that threw a warning).

  * Link to v1:
        https://lore.kernel.org/linux-usb/20201129160612.1908074-1-anant.thazhemadam@gmail.com/ 

Anant Thazhemadam (12):
  usb: misc: appledisplay: update to use the
    usb_control_msg_{send|recv}() API
  usb: misc: cypress_cy7c63: update to use usb_control_msg_recv()
  usb: misc: cytherm: update to use usb_control_msg_recv()
  usb: misc: ehset: update to use the usb_control_msg_{send|recv}() API
  usb: misc: ezusb: update to use usb_control_msg_send()
  usb: misc: iowarrior: update to use the usb_control_msg_{send|recv}()
    API
  usb: misc: isight_firmware: update to use usb_control_msg_send()
  usb: misc: ldusb: update to use usb_control_msg_send()
  usb: misc: lvstest: update to use the usb_control_msg_{send|recv}()
    API
  usb: misc: trancevibrator: update to use usb_control_msg_send()
  usb: misc: usbsevseg: update to use usb_control_msg_send()
  usb: misc: usbtest: update to use the usb_control_msg_{send|recv}()
    API

 drivers/usb/misc/appledisplay.c    |  46 +++++------
 drivers/usb/misc/cypress_cy7c63.c  |  21 ++---
 drivers/usb/misc/cytherm.c         | 128 ++++++++++-------------------
 drivers/usb/misc/ehset.c           |  76 ++++++++---------
 drivers/usb/misc/ezusb.c           |  16 +---
 drivers/usb/misc/iowarrior.c       |  34 ++++----
 drivers/usb/misc/isight_firmware.c |  30 +++----
 drivers/usb/misc/ldusb.c           |   8 +-
 drivers/usb/misc/lvstest.c         |  38 ++++-----
 drivers/usb/misc/trancevibrator.c  |   4 +-
 drivers/usb/misc/usbsevseg.c       |  60 ++++----------
 drivers/usb/misc/usbtest.c         |  69 +++++++---------
 12 files changed, 198 insertions(+), 332 deletions(-)

-- 
2.25.1