From: David Miller <davem@davemloft.net>
To: jeffrey.t.kirsher@intel.com
Cc: netdev@vger.kernel.org, gospo@redhat.com, bruce.w.allan@intel.com
Subject: Re: [net-2.6 PATCH 4/5] e1000e: separate mutex usage between NVM and PHY/CSR register for ICHx/PCH
Date: Mon, 26 Oct 2009 16:17:22 -0700 (PDT) [thread overview]
Message-ID: <20091026.161722.242384657.davem@davemloft.net> (raw)
In-Reply-To: <20091026212343.9682.56885.stgit@localhost.localdomain>
From: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Date: Mon, 26 Oct 2009 14:23:43 -0700
> From: Bruce Allan <bruce.w.allan@intel.com>
>
> Accesses to NVM and PHY/CSR registers on ICHx/PCH-based parts are protected
> from concurrent accesses with a mutex that is acquired when the access is
> initiated and released when the access has completed. However, the two
> types of accesses should not be protected by the same mutex because the
> driver may have to access the NVM while already holding the mutex over
> several consecutive PHY/CSR accesses which would result in livelock.
>
> Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Applied.
next prev parent reply other threads:[~2009-10-26 23:16 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-26 21:22 [net-2.6 PATCH 1/5] e1000e: clear PHY wakeup bit after LCD reset on 82577/82578 Jeff Kirsher
2009-10-26 21:23 ` [net-2.6 PATCH 2/5] e1000e: increase swflag acquisition timeout for ICHx/PCH Jeff Kirsher
2009-10-26 23:17 ` David Miller
2009-10-26 21:23 ` [net-2.6 PATCH 3/5] e1000e: 82577/82578 requires a different method to configure LPLU Jeff Kirsher
2009-10-26 23:17 ` David Miller
2009-10-26 21:23 ` [net-2.6 PATCH 4/5] e1000e: separate mutex usage between NVM and PHY/CSR register for ICHx/PCH Jeff Kirsher
2009-10-26 23:17 ` David Miller [this message]
2009-10-26 21:24 ` [net-2.6 PATCH 5/5] e1000e: allow for swflag to be held over consecutive PHY accesses Jeff Kirsher
2009-10-26 23:17 ` David Miller
2009-10-26 23:17 ` [net-2.6 PATCH 1/5] e1000e: clear PHY wakeup bit after LCD reset on 82577/82578 David Miller
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