linux-kernel - [PATCH 0/3] hwmon: (corsair-cpro) Fix issues when hidraw is used

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Message-ID: <20240504092504.24158-1-savicaleksa83@gmail.com>
Date: Sat,  4 May 2024 11:25:00 +0200
From: Aleksa Savic <savicaleksa83@...il.com>
To: linux-hwmon@...r.kernel.org
Cc: Jonas Malaco <jonas@...tocubo.io>,
	Aleksa Savic <savicaleksa83@...il.com>,
	Marius Zachmann <mail@...iuszachmann.de>,
	Jean Delvare <jdelvare@...e.com>,
	Guenter Roeck <linux@...ck-us.net>,
	linux-kernel@...r.kernel.org
Subject: [PATCH 0/3] hwmon: (corsair-cpro) Fix issues when hidraw is used

This patch series fixes the behavior of the corsair-cpro driver while
hidraw is used from userspace.

The first patch introduces a separate buffer for sending commands to
the device to prevent it from being overwritten thanks to a hidraw
userspace call.

The second patch replaces the complete() call in the raw event parsing
function with complete_all() to signify that the completion is done
until reinit.

The third patch introduces locking for the ccp->wait_input_report
completion as it's touched in functions that could be executing in
parallel.

Aleksa Savic (3):
  hwmon: (corsair-cpro) Use a separate buffer for sending commands
  hwmon: (corsair-cpro) Use complete_all() instead of complete() in
    ccp_raw_event()
  hwmon: (corsair-cpro) Protect ccp->wait_input_report with a spinlock

 drivers/hwmon/corsair-cpro.c | 45 +++++++++++++++++++++++++-----------
 1 file changed, 32 insertions(+), 13 deletions(-)

-- 
2.44.0