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authorHoratiu Vultur <horatiu.vultur@microchip.com>2024-05-13 22:21:57 +0300
committerDavid S. Miller <davem@davemloft.net>2024-05-14 15:38:31 +0300
commitaea27a92a41dae14843f92c79e9e42d8f570105c (patch)
tree5319ffd065eecb40b2170ba2fb8462c375f3297a
parentc2e0c58b25a0a0c37ec643255558c5af4450c9f5 (diff)
downloadlinux-aea27a92a41dae14843f92c79e9e42d8f570105c.tar.xz
net: micrel: Fix receiving the timestamp in the frame for lan8841
The blamed commit started to use the ptp workqueue to get the second part of the timestamp. And when the port was set down, then this workqueue is stopped. But if the config option NETWORK_PHY_TIMESTAMPING is not enabled, then the ptp_clock is not initialized so then it would crash when it would try to access the delayed work. So then basically by setting up and then down the port, it would crash. The fix consists in checking if the ptp_clock is initialized and only then cancel the delayed work. Fixes: cc7554954848 ("net: micrel: Change to receive timestamp in the frame for lan8841") Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com> Reviewed-by: Simon Horman <horms@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--drivers/net/phy/micrel.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/net/phy/micrel.c b/drivers/net/phy/micrel.c
index ddb50a0e2bc8..87780465cd0d 100644
--- a/drivers/net/phy/micrel.c
+++ b/drivers/net/phy/micrel.c
@@ -4676,7 +4676,8 @@ static int lan8841_suspend(struct phy_device *phydev)
struct kszphy_priv *priv = phydev->priv;
struct kszphy_ptp_priv *ptp_priv = &priv->ptp_priv;
- ptp_cancel_worker_sync(ptp_priv->ptp_clock);
+ if (ptp_priv->ptp_clock)
+ ptp_cancel_worker_sync(ptp_priv->ptp_clock);
return genphy_suspend(phydev);
}