i40e/i40evf: don't lose interrupts

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While re-enabling interrupts the driver would clear all pending
causes. This meant that if an interrupt was generated while the driver
was cleaning or polling with interrupts disabled, then that interrupt
was lost.  This could cause a queue to become dead, especially for
receive.  Refactored the enable_icr0 function in order to allow
it to be decided by the caller whether the CLEARPBA (clear pending
events) bit will be set while re-enabling the interrupt.

Also update copyright year in file headers.

Change-ID: Ic1db100a05e13c98919057696db147a258ca365a
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

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This commit is contained in:

Jesse Brandeburg 2016-01-13 16:51:45 -08:00 • committed by Jeff Kirsher

parent eaab59e9d2

commit 40d72a5098

5 changed files with 20 additions and 12 deletions

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7

drivers/net/ethernet/intel/i40e/i40e.h

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11

drivers/net/ethernet/intel/i40e/i40e_main.c

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6

drivers/net/ethernet/intel/i40e/i40e_txrx.c

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4

drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c

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4

drivers/net/ethernet/intel/i40evf/i40e_txrx.c

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