linux-kernel - Re: [PATCH 1/4] tpm: fix access attempt to an already unmapped I/O memory region

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Message-ID: <20171224205750.z25vnk3apew3zuc6@linux.intel.com>
Date:   Sun, 24 Dec 2017 22:57:50 +0200
From:   Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>
To:     Javier Martinez Canillas <javierm@...hat.com>
Cc:     linux-kernel@...r.kernel.org, James Ettle <james@...le.org.uk>,
        Hans de Goede <hdegoede@...hat.com>,
        Azhar Shaikh <azhar.shaikh@...el.com>,
        Arnd Bergmann <arnd@...db.de>, Peter Huewe <peterhuewe@....de>,
        Jason Gunthorpe <jgg@...pe.ca>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-integrity@...r.kernel.org
Subject: Re: [PATCH 1/4] tpm: fix access attempt to an already unmapped I/O
 memory region

On Wed, Dec 20, 2017 at 12:35:35PM +0100, Javier Martinez Canillas wrote:
> The driver maps the I/O memory address to control the LPC bus CLKRUN_EN,
> but on the error path the memory is accessed by the .clk_enable handler
> after this was already unmapped. So only unmap the I/O memory region if
> it will not be used anymore.
> 
> Also, the correct thing to do is to cleanup the resources in the inverse
> order that were acquired to prevent issues like these.
> 
> Signed-off-by: Javier Martinez Canillas <javierm@...hat.com>

I applied Azhar's updated patches to master and next. Shouldn't this be
dropped now?

/Jarkko