net: dec: tulip: de2104x: Add shutdown handler to stop NIC

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The driver does not implement a shutdown handler which leads to issues
when using kexec in certain scenarios. The NIC keeps on fetching
descriptors which gets flagged by the IOMMU with errors like this:

DMAR: DMAR:[DMA read] Request device [5e:00.0]fault addr fffff000
DMAR: DMAR:[DMA read] Request device [5e:00.0]fault addr fffff000
DMAR: DMAR:[DMA read] Request device [5e:00.0]fault addr fffff000
DMAR: DMAR:[DMA read] Request device [5e:00.0]fault addr fffff000
DMAR: DMAR:[DMA read] Request device [5e:00.0]fault addr fffff000

Signed-off-by: Moritz Fischer <mdf@kernel.org>
Link: https://lore.kernel.org/r/20201028172125.496942-1-mdf@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

...

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Moritz Fischer 2020-10-28 10:21:25 -07:00 • committed by Jakub Kicinski

parent 1887023a5e

commit c1181f42ff

1 changed files with 10 additions and 0 deletions

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drivers/net/ethernet/dec/tulip/de2104x.c

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