diff options
| author |   Jakub Kicinski <jakub.kicinski@netronome.com> | 2017-09-13 10:16:00 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2017-09-13 13:29:13 -0700 |
| commit | 7dbd5b7517376c4395a9ed0b26cf6b4db80d8415 (patch) | |
| tree | 1db0fcbf574d3374f19777428d5cb5edad1661e0 /drivers/net/ethernet/netronome/nfp/nfp_main.c | |
| parent | nfp: wait for board state before talking to the NSP (diff) | |
| download | wireguard-linux-7dbd5b7517376c4395a9ed0b26cf6b4db80d8415.tar.xz wireguard-linux-7dbd5b7517376c4395a9ed0b26cf6b4db80d8415.zip | |
nfp: wait for the NSP resource to appear on boot
The control process (NSP) may take some time to complete its
initialization. This is not a problem on most servers, but
on very fast-booting machines it may not be ready for operation
when driver probes the device. There is also a version of the
flash in the wild where NSP tries to train the links as part
of init. To wait for NSP initialization we should make sure
its resource has already been added to the resource table.
NSP adds itself there as last step of init.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/netronome/nfp/nfp_main.c')
| -rw-r--r-- | drivers/net/ethernet/netronome/nfp/nfp_main.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/net/ethernet/netronome/nfp/nfp_main.c b/drivers/net/ethernet/netronome/nfp/nfp_main.c index 424707d41fbd..f8fa63b66739 100644 --- a/drivers/net/ethernet/netronome/nfp/nfp_main.c +++ b/drivers/net/ethernet/netronome/nfp/nfp_main.c @@ -351,6 +351,10 @@ static int nfp_nsp_init(struct pci_dev *pdev, struct nfp_pf *pf) struct nfp_nsp *nsp; int err; + err = nfp_resource_wait(pf->cpp, NFP_RESOURCE_NSP, 30); + if (err) + return err; + nsp = nfp_nsp_open(pf->cpp); if (IS_ERR(nsp)) { err = PTR_ERR(nsp); |