tree 23db4d15f15a1c9a42f453db4c9e2d2c36ca3e1e
parent 9c0c3b83d32ed9678bcde50743497571b61759da
author Jacob Keller <jacob.e.keller@intel.com> 1525957188 -0700
committer Jeff Kirsher <jeffrey.t.kirsher@intel.com> 1526306716 -0700

i40e: free the skb after clearing the bitlock

In commit bbc4e7d273b5 ("i40e: fix race condition with PTP_TX_IN_PROGRESS
bits") we modified the code which handles Tx timestamps so that we would
clear the progress bit as soon as possible.

A later commit 0bc0706b46cd ("i40e: check for Tx timestamp timeouts during
watchdog") introduced similar code for detecting and handling cleanup of
a blocked Tx timestamp. This code did not use the same pattern for cleaning
up the skb.

Update this code to wait to free the skb until after the bit lock is
free, by first setting the ptp_tx_skb to NULL and clearing the lock.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>