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Date: Wed, 15 Sep 2021 23:10:44 +0200
From: "Fabio M. De Francesco" <fmdefrancesco@...il.com>
To: Larry Finger <Larry.Finger@...inger.net>,
Phillip Potter <phil@...lpotter.co.uk>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Pavel Skripkin <paskripkin@...il.com>,
linux-staging@...ts.linux.dev, linux-kernel@...r.kernel.org,
David Laight <david.Laight@...lab.com>,
Dan Carpenter <dan.carpenter@...cle.com>
Cc: "Fabio M. De Francesco" <fmdefrancesco@...il.com>
Subject: [PATCH v6 00/19] staging: r8188eu: Shorten and simplify calls chains
io_ops abstraction is useless in this driver, since there is only one ops
registration. Without io_ops we can get rid of indirect calls mess and
shorten the calls chain.
Shorten the calls chain of rtw_read8/16/32() down to the actual reads.
For this purpose unify the three usb_read8/16/32 into the new
usb_read(); make the latter parameterizable with 'size'; embed most of
the code of usbctrl_vendorreq() into usb_read() and use in it the new
usb_control_msg_recv() API of USB Core.
Shorten the calls chain of rtw_write8/16/32() down to the actual writes.
For this purpose unify the four usb_write8/16/32/N() into the new
usb_write(); make the latter parameterizable with 'size'; embed most of
the code of usbctrl_vendorreq() into usb_write() and use in it the new
usb_control_msg_send() API of USB Core.
The code with the modifications was thoroughly tested by Pavel Skripkin
using a TP-Link TL-WN722N v2 / v3 [Realtek RTL8188EUS] and by Fabio M.
De Francesco using a ASUSTek Computer, Inc. Realtek 8188EUS [USB-N10 Nano].
Changelog:
v5->v6:
- 1-14:
Minimal changes to patch subjects to achieve consistent
style;
- 15:
Fix a mistake in the checks of values returned by
usb_control_msg();
- 16-19:
No changes.
v4->v5:
- 1-14:
No changes;
- 15-16:
Fix minor formatting issues and use "Reverse Xmas Tree" style,
according to suggestions by David Laight and Dan Carpenter;
- 17-18:
Pavel Skripkin found logical errors in the checks of the
values returned by usb_control_msg_{recv,send}(), so fix them;
Dan Carpenter suggested to do error handling before success
handling, so change the code accordingly;
- 19:
Add this patch in order to get rid of the shared buffer in
usb_read() and usb_write() and remove this field from struct
"dvobj_priv".
v3->v4:
- 1-14:
Split a patch into fourteen;
- 15-16:
Add these patches for clean-ups of the code that is going to be
reused in 17-18/18;
- 17-18:
Make some changes according to a first review of Greg
Kroah-Hartman; furthermore, remove the unnecessary while loop
and a couple of if' test; handle the errors returned by
usb_control_msg_recv().
v2->v3:
- 1-2:
No changes;
- 3:
Fix the version number of the patch.
v1->v2:
- 1-2:
No changes;
- 3:
Replace parameter REALTEK_USB_VENQT_READ with REALTEK_USB_VENQT_WRITE
in usb_control_msg_send().
v1: https://lore.kernel.org/lkml/20210904150447.14659-1-fmdefrancesco@gmail.com/
v2: https://lore.kernel.org/lkml/20210904212719.11426-1-fmdefrancesco@gmail.com/
v3: https://lore.kernel.org/lkml/20210904220048.12822-1-fmdefrancesco@gmail.com/
v4: https://lore.kernel.org/lkml/20210913181002.16651-1-fmdefrancesco@gmail.com/
v5: https://lore.kernel.org/lkml/20210915124149.27543-1-fmdefrancesco@gmail.com/
Fabio M. De Francesco (4):
staging: r8188eu: Clean up usbctrl_vendorreq()
staging: r8188eu: Clean up rtw_read8/16/32() and rtw_write8/16/32/N()
staging: r8188eu: Shorten calls chains of rtw_read8/16/32()
staging: r8188eu: Shorten calls chains of rtw_write8/16/32/N()
Pavel Skripkin (15):
staging: r8188eu: remove usb_{read,write}_mem()
staging: r8188eu: remove the helpers of rtw_read8()
staging: r8188eu: remove the helpers of rtw_read16()
staging: r8188eu: remove the helpers of rtw_read32()
staging: r8188eu: remove the helpers of usb_write8()
staging: r8188eu: remove the helpers of usb_write16()
staging: r8188eu: remove the helpers of usb_write32()
staging: r8188eu: remove the helpers of usb_writeN()
staging: r8188eu: remove the helpers of usb_read_port()
staging: r8188eu: remove the helpers of usb_write_port()
staging: r8188eu: remove the helpers of usb_read_port_cancel()
staging: r8188eu: remove the helpers of usb_write_port_cancel()
staging: r8188eu: remove core/rtw_io.c
staging: remove struct _io_ops
staging: r8188eu: remove shared buffer for usb requests
drivers/staging/r8188eu/Makefile | 1 -
drivers/staging/r8188eu/core/rtw_io.c | 299 ------------------
drivers/staging/r8188eu/hal/usb_halinit.c | 6 +-
drivers/staging/r8188eu/hal/usb_ops_linux.c | 261 ++++++++-------
drivers/staging/r8188eu/include/drv_types.h | 5 -
drivers/staging/r8188eu/include/rtw_io.h | 89 +-----
drivers/staging/r8188eu/include/usb_ops.h | 2 -
.../staging/r8188eu/include/usb_ops_linux.h | 8 -
drivers/staging/r8188eu/os_dep/usb_intf.c | 37 +--
.../staging/r8188eu/os_dep/usb_ops_linux.c | 20 +-
10 files changed, 166 insertions(+), 562 deletions(-)
delete mode 100644 drivers/staging/r8188eu/core/rtw_io.c
--
2.33.0
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