sfc: Only cancel the PPS workqueue if it exists
authorMartin Habets <mhabets@solarflare.com>
Thu, 21 Nov 2019 17:52:15 +0000 (17:52 +0000)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sun, 1 Dec 2019 08:16:07 +0000 (09:16 +0100)
commit1ff2a0f8692f48c1081554a4226cfd3913c0ff4f
treeeab0810578992e374060c9b5a111def8204f4dcd
parent13512a5eb818d6787433eee1d67877437f8c9f12
sfc: Only cancel the PPS workqueue if it exists

[ Upstream commit 723eb53690041740a13ac78efeaf6804f5d684c9 ]

The workqueue only exists for the primary PF. For other functions
we hit a WARN_ON in kernel/workqueue.c.

Fixes: 7c236c43b838 ("sfc: Add support for IEEE-1588 PTP")
Signed-off-by: Martin Habets <mhabets@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/net/ethernet/sfc/ptp.c