]> git.baikalelectronics.ru Git - kernel.git/commit
ixgbe: Place SWFW semaphore in known valid state at probe
authorDon Skidmore <donald.c.skidmore@intel.com>
Wed, 9 Mar 2016 21:45:00 +0000 (16:45 -0500)
committerJeff Kirsher <jeffrey.t.kirsher@intel.com>
Tue, 5 Apr 2016 00:44:50 +0000 (17:44 -0700)
commit8443b2adc15c64db3bcea608e1df125e8b653e5e
tree4d2c20985c51cd9b73af08d96eea74c07975e465
parent6333043484a86238b1408b22ec52dd46d393bc8d
ixgbe: Place SWFW semaphore in known valid state at probe

It is possible on some HW that a system reset could occur when we are
holding the SWFW semaphore lock.  So next time the driver was loaded we
would see it incorrectly as locked. This patch will recover from that state
by: Attempting to acquire the semaphore and then regardless of whether or
not it was acquire we immediately release it. This will force us into
a known good state.

Signed-off-by: Don Skidmore <donald.c.skidmore@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
drivers/net/ethernet/intel/ixgbe/ixgbe_82598.c
drivers/net/ethernet/intel/ixgbe/ixgbe_82599.c
drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
drivers/net/ethernet/intel/ixgbe/ixgbe_type.h
drivers/net/ethernet/intel/ixgbe/ixgbe_x540.c
drivers/net/ethernet/intel/ixgbe/ixgbe_x540.h
drivers/net/ethernet/intel/ixgbe/ixgbe_x550.c