net: ena: unmask MSI-X only after device initialization is completed

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[ Upstream commit 7853b49ce8 ]

Under certain conditions MSI-X interrupt might arrive right after it
was unmasked in ena_up(). There is a chance it would be processed by
the driver before device ENA_FLAG_DEV_UP flag is set. In such a case
the interrupt is ignored.
ENA device operates in auto-masked mode, therefore ignoring
interrupt leaves it masked for good.
Moving unmask of interrupt to be the last step in ena_up().

Signed-off-by: Netanel Belgazal <netanel@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Netanel Belgazal 2018-01-03 06:17:29 +00:00 • committed by Greg Kroah-Hartman

parent aae87222cc

commit d66a35c2a1

1 changed files with 13 additions and 13 deletions

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drivers/net/ethernet/amazon/ena/ena_netdev.c

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