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e1000e: cleanup strict checkpatch MEMORY_BARRIER checks 

Add comments to memory barriers per strict checkpatch.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Bruce Allan 2012-08-17 06:18:07 +00:00 committed by Jeff Kirsher
parent efc38d2af5
commit bc76329d4a
1 changed files with 9 additions and 1 deletions
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10
drivers/net/ethernet/intel/e1000e/netdev.c
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@ -3746,6 +3746,10 @@ static irqreturn_t e1000_intr_msi_test(int irq, void *data)
e_dbg("icr is %08X\n", icr);
if (icr & E1000_ICR_RXSEQ) {
adapter->flags &= ~FLAG_MSI_TEST_FAILED;
/*
* Force memory writes to complete before acknowledging the
* interrupt is handled.
*/
wmb();
}
@ -3787,6 +3791,10 @@ static int e1000_test_msi_interrupt(struct e1000_adapter *adapter)
goto msi_test_failed;
}
/*
* Force memory writes to complete before enabling and firing an
* interrupt.
*/
wmb();
e1000_irq_enable(adapter);
@ -3798,7 +3806,7 @@ static int e1000_test_msi_interrupt(struct e1000_adapter *adapter)
e1000_irq_disable(adapter);
rmb();
rmb(); /* read flags after interrupt has been fired */
if (adapter->flags & FLAG_MSI_TEST_FAILED) {
adapter->int_mode = E1000E_INT_MODE_LEGACY;