PCI: mvebu: Dynamically detect if the PEX link is up to enable hot plug

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Otherwise hotplugging the PEX doesn't work at all since the driver
detects the link state at probe time. Simply replacing the two tests
of haslink with a register read is enough to fix it.

Tested on kirkwood with repeated plug/unplug of the link partner.

Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Acked-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Tested-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>

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Jason Gunthorpe 2013-10-01 11:58:00 -06:00 • committed by Jason Cooper

parent 96ae0b5486

commit 9f352f0e6c

1 changed files with 8 additions and 11 deletions

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drivers/pci/host/pci-mvebu.c

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