diff options
| author | Felix Manlunas <felix.manlunas@cavium.com> | 2017-10-25 18:04:56 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-10-27 22:13:19 +0900 |
| commit | 392209fa833287a1c5532ffbb098bba584a69dbc (patch) | |
| tree | 5dc13ca8d9c2585ad0a4ede701c0421cfa0183c1 /drivers/net/ethernet/cavium | |
| parent | c0c21458d7d242adf9c3a3e2f3f95392164325ae (diff) | |
| download | linux-392209fa833287a1c5532ffbb098bba584a69dbc.tar.bz2 | |
liquidio: deprecate 1-bit flag indicating watchdog kernel thread is running
Deprecate the 1-bit flag (bit 2 in the SLI_SCRATCH_1 Octeon register) that
indicates that the liquidio watchdog kernel thread is running for this NIC.
Reason is: it is incompatible with the firmware's use for SLI_SCRATCH_1.
In lieu of checking that now-deprecated flag, check the value of
oct_dev->adapter_refcount to determine whether or not to create the
watchdog kernel thread.
Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com>
Signed-off-by: Raghu Vatsavayi <raghu.vatsavayi@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/cavium')
| -rw-r--r-- | drivers/net/ethernet/cavium/liquidio/lio_main.c | 14 |
1 files changed, 4 insertions, 10 deletions
diff --git a/drivers/net/ethernet/cavium/liquidio/lio_main.c b/drivers/net/ethernet/cavium/liquidio/lio_main.c index b4f753c56308..accd038f3f34 100644 --- a/drivers/net/ethernet/cavium/liquidio/lio_main.c +++ b/drivers/net/ethernet/cavium/liquidio/lio_main.c @@ -1196,19 +1196,13 @@ liquidio_probe(struct pci_dev *pdev, } if (OCTEON_CN23XX_PF(oct_dev)) { - u64 scratch1; u8 bus, device, function; - scratch1 = octeon_read_csr64(oct_dev, CN23XX_SLI_SCRATCH1); - if (!(scratch1 & 4ULL)) { - /* Bit 2 of SLI_SCRATCH_1 is a flag that indicates that - * the lio watchdog kernel thread is running for this - * NIC. Each NIC gets one watchdog kernel thread. + if (atomic_read(oct_dev->adapter_refcount) == 1) { + /* Each NIC gets one watchdog kernel thread. The first + * PF (of each NIC) that gets pci_driver->probe()'d + * creates that thread. */ - scratch1 |= 4ULL; - octeon_write_csr64(oct_dev, CN23XX_SLI_SCRATCH1, - scratch1); - bus = pdev->bus->number; device = PCI_SLOT(pdev->devfn); function = PCI_FUNC(pdev->devfn); |