From: Marek Vasut <ma...@denx.de> Date: Thu, 10 Oct 2019 20:25:08 +0200
> The KSZ driver uses one regmap per register width (8/16/32), each with > it's own lock, but accessing the same set of registers. In theory, it > is possible to create a race condition between these regmaps, although > the underlying bus (SPI or I2C) locking should assure nothing bad will > really happen and the accesses would be correct. > > To make the driver do the right thing, add one single shared mutex for > all the regmaps used by the driver instead. This assures that even if > some future hardware is on a bus which does not serialize the accesses > the same way SPI or I2C does, nothing bad will happen. > > Note that the status_mutex was unused and only initied, hence it was > renamed and repurposed as the regmap mutex. > > Signed-off-by: Marek Vasut <ma...@denx.de> Applied.
