linux-kernel - [PATCH v2 0/8] drivers/usb: refactor min/max with min_t/max

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Message-Id: <20241112155817.3512577-1-snovitoll@gmail.com>
Date: Tue, 12 Nov 2024 20:58:09 +0500
From: Sabyrzhan Tasbolatov <snovitoll@...il.com>
To: gregkh@...uxfoundation.org,
	andreyknvl@...il.com,
	b-liu@...com,
	johan@...nel.org,
	oneukum@...e.com,
	stern@...land.harvard.edu
Cc: linux-kernel@...r.kernel.org,
	linux-usb@...r.kernel.org,
	snovitoll@...il.com,
	usb-storage@...ts.one-eyed-alien.net
Subject: [PATCH v2 0/8] drivers/usb: refactor min/max with min_t/max_t

This patch series improves type safety in the drivers/usb/*
by using `min_t()` and `max_t()` instead of min(), max()
with the casting inside. It should address potential type promotion issues.

Scanned the current drivers/usb code with `max\(.*\(` and `min\(.*\(`
regexp queries to find casting inside of min() and max() which
may lead to subtle bugs or even security vulnerabilities,
especially if negative values are involved.

Let's refactor to min_t() and max_t() specifying the data type
to ensure it's applicable for the both compareable arguments.

Changes v1 -> v2:
  - split a single patch into a patch series
	  per each drivers/usb/* subdirectory (Greg).

Sabyrzhan Tasbolatov (8):
  drivers/usb/gadget: refactor min with min_t
  drivers/usb/core: refactor max with max_t
  drivers/usb/host: refactor min/max with min_t/max_t
  drivers/usb/misc: refactor min with min_t
  drivers/usb/mon: refactor min with min_t
  drivers/usb/musb: refactor min/max with min_t/max_t
  drivers/usb/serial: refactor min with min_t
  drivers/usb/storage: refactor min with min_t

 drivers/usb/core/config.c                    |  2 +-
 drivers/usb/gadget/composite.c               | 12 ++++++------
 drivers/usb/gadget/configfs.c                |  2 +-
 drivers/usb/gadget/function/f_fs.c           |  6 +++---
 drivers/usb/gadget/function/f_mass_storage.c |  8 ++++----
 drivers/usb/gadget/function/uvc_video.c      |  4 ++--
 drivers/usb/gadget/legacy/raw_gadget.c       |  4 ++--
 drivers/usb/gadget/udc/omap_udc.c            |  4 ++--
 drivers/usb/gadget/usbstring.c               |  2 +-
 drivers/usb/host/ehci-hcd.c                  |  2 +-
 drivers/usb/host/oxu210hp-hcd.c              |  4 ++--
 drivers/usb/host/r8a66597-hcd.c              |  2 +-
 drivers/usb/misc/usbtest.c                   |  3 ++-
 drivers/usb/mon/mon_bin.c                    |  2 +-
 drivers/usb/musb/musb_core.c                 |  2 +-
 drivers/usb/musb/musb_gadget_ep0.c           |  2 +-
 drivers/usb/musb/musb_host.c                 |  5 ++---
 drivers/usb/serial/io_edgeport.c             |  2 +-
 drivers/usb/serial/sierra.c                  |  2 +-
 drivers/usb/storage/sddr09.c                 |  4 ++--
 drivers/usb/storage/sddr55.c                 |  8 ++++----
 21 files changed, 41 insertions(+), 41 deletions(-)

-- 
2.34.1