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2023-01-31T13:19:20.873246Z
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V 1671
ena: Re-Enable per-packet missing tx completion print

Commit [1] first added the ena_tx_buffer.print_once member,
so that a message about a missing tx completion is printed only
once per packet (and not every second when the watchdog runs).
In this commit print_once is initialized to true, and is set back
to false after detecting a missing tx completion and printing
a warning about it to dmesg.

Commit [2] incorrectly reverses the values assigned to print_once.
The variable is initialized to be true but is checked to be false
when a missing tx completion is detected. This is never true, and
therefore the warning print for each missing tx completion is never
printed since this commit.

Commit [3] added time passed since last TX cleanup to the missing
tx completions per-packet print. However, due to the issue in commit
[2], this time is never printed.

This commit reverses back the values assigned to ena_tx_buffer.print_once
erroneously by commit [2], bringing back to life the missing tx
completion per-packet print.

Also add a space after "." in the missing tx completion print.

[1] - 9b8d05b8ac78 ("Add support for Amazon Elastic Network Adapter (ENA) NIC")
[2] - 74dba3ad7851 ("Split function checking for missing TX completion in ENA driver")
[3] - d8aba82b5ca7 ("ena: Store ticks of last Tx cleanup")

Fixes: 74dba3ad7851 ("Split function checking for missing TX completion in ENA driver")
Fixes: d8aba82b5ca7 ("ena: Store ticks of last Tx cleanup")
MFC after: 2 weeks
Sponsored by: Amazon, Inc.

(cherry picked from commit f01b2cd98e93ef5ac3698b97bbaa45ac9c50fe5d)

Git Hash:   113c730edcca8244bd14e6c23916dcdfda5da944
Git Author: akiyano@amazon.com
END