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authorAndrew Lunn <andrew@lunn.ch>2017-12-07 01:05:56 +0100
committerDavid S. Miller <davem@davemloft.net>2017-12-07 13:53:05 -0500
commit3d5fdba1842bdd2eef29364c660558cb4cbb3fe0 (patch)
tree1577dbd507c39c90a678ea3006178c0b00df1430 /.gitignore
parente46772a6946a7d1f3fbbc1415871851d6651f1d4 (diff)
net: dsa: mv88e6xxx: Fix interrupt masking on removal
When removing the interrupt handling code, we should mask the generation of interrupts. The code however unmasked all interrupts. This can then cause a new interrupt. We then get into a deadlock where the interrupt thread is waiting to run, and the code continues, trying to remove the interrupt handler, which means waiting for the thread to complete. On a UP machine this deadlocks. Fix so we really mask interrupts in the hardware. The same error is made in the error path when install the interrupt handling code. Fixes: 3460a5770ce9 ("net: dsa: mv88e6xxx: Mask g1 interrupts and free interrupt") Signed-off-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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