net: bcmgenet: restore HFB filters on resume

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The Hardware Filter Block RAM may not be preserved when the GENET
block is reset during a deep sleep, so it is not sufficient to
only backup and restore the enables.

This commit clears out the HFB block and reprograms the rxnfc
rules when the system resumes from a suspended state. To support
this the bcmgenet_hfb_create_rxnfc_filter() function is modified
to access the register space directly so that it can't fail due
to memory allocation issues.

Fixes: f50932cca6 ("net: bcmgenet: add WAKE_FILTER support")
Signed-off-by: Doug Berger <opendmb@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

...

This commit is contained in:

Doug Berger 2020-07-16 16:38:17 -07:00 • committed by David S. Miller

parent 3d653adb4b

commit a8c64542b4

2 changed files with 62 additions and 77 deletions

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138

drivers/net/ethernet/broadcom/genet/bcmgenet.c

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1

drivers/net/ethernet/broadcom/genet/bcmgenet.h

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