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authorWei Fang <wei.fang@nxp.com>2024-05-11 14:20:09 +0800
committerJakub Kicinski <kuba@kernel.org>2024-05-13 17:44:37 -0700
commitc2e0c58b25a0a0c37ec643255558c5af4450c9f5 (patch)
tree7f86c03ed443007969c69f0715b5b863be85ee53 /drivers/net/ethernet/sun
parentad506586cb69292b6ac59ab95468aadd54b19ab7 (diff)
net: fec: remove .ndo_poll_controller to avoid deadlocks
There is a deadlock issue found in sungem driver, please refer to the commit ac0a230f719b ("eth: sungem: remove .ndo_poll_controller to avoid deadlocks"). The root cause of the issue is that netpoll is in atomic context and disable_irq() is called by .ndo_poll_controller interface of sungem driver, however, disable_irq() might sleep. After analyzing the implementation of fec_poll_controller(), the fec driver should have the same issue. Due to the fec driver uses NAPI for TX completions, the .ndo_poll_controller is unnecessary to be implemented in the fec driver, so fec_poll_controller() can be safely removed. Fixes: 7f5c6addcdc0 ("net/fec: add poll controller function for fec nic") Signed-off-by: Wei Fang <wei.fang@nxp.com> Link: https://lore.kernel.org/r/20240511062009.652918-1-wei.fang@nxp.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/net/ethernet/sun')
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