linux-kernel - Question: drivers/misc/hdpuftrs

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Message-ID: <BD79186B4FD85F4B8E60E381CAEE190901FB1116@mi8nycmail19.Mi8.com>
Date:	Fri, 11 Dec 2009 19:57:10 -0500
From:	"H Hartley Sweeten" <hartleys@...ionengravers.com>
To:	"kernel list" <linux-kernel@...r.kernel.org>
Subject: Question: drivers/misc/hdpuftrs

Hello all,

Are the drivers in drivers/misc/hdpuftrs dead?

I can't locate anywhere to enable CONFIG_HDPU_FEATURES.  Also, both
hdpu_cpustate.c and hdpu_nexus.c register as platform drivers but I
can't find any users in the mainline tree.

Both drivers seem kind of... ugly...

hdpu_cpustate.c does a lock_kernel() in the open file_operation.  Then
does a spin_lock() when checking if the open is O_EXCL.

I'm no expert on locking but the lock_kernel() seems unnecessary.

Regards,
Hartley
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