e1000e: separate mutex usage between NVM and PHY/CSR register for ICHx/PCH

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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>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Bruce Allan 2009-10-26 11:23:43 +00:00 • committed by David S. Miller

parent fa2ce13ca7

commit ca15df58b1

1 changed files with 58 additions and 31 deletions

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89

drivers/net/e1000e/ich8lan.c

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