linux-kernel - [PATCH 1/8] staging: mt7621-eth: Lock is never unlocked.

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Message-ID: <152540991585.12190.1091705512182182698.stgit@noble>
Date:   Fri, 04 May 2018 14:58:35 +1000
From:   NeilBrown <neil@...wn.name>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org
Subject: [PATCH 1/8] staging: mt7621-eth: Lock is never unlocked.

mtk_phy_link_adjust takes a spinlock and disables
interrupts, but never unlocks.
This can leave interrupts disabled on one CPU and
various things stop working.

Signed-off-by: NeilBrown <neil@...wn.name>
---
 drivers/staging/mt7621-eth/mdio.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/staging/mt7621-eth/mdio.c b/drivers/staging/mt7621-eth/mdio.c
index 9d713078ef90..c6db11aad9e4 100644
--- a/drivers/staging/mt7621-eth/mdio.c
+++ b/drivers/staging/mt7621-eth/mdio.c
@@ -57,6 +57,7 @@ static void mtk_phy_link_adjust(struct net_device *dev)
 			}
 		}
 	}
+	spin_unlock_irqrestore(&eth->phy->lock, flags);
 }

 int mtk_connect_phy_node(struct mtk_eth *eth, struct mtk_mac *mac,