nfp: Use pci_get_dsn()
authorJacob Keller <jacob.e.keller@intel.com>
Tue, 3 Mar 2020 02:25:05 +0000 (18:25 -0800)
committerDavid S. Miller <davem@davemloft.net>
Fri, 6 Mar 2020 01:37:32 +0000 (17:37 -0800)
commit61600112f02f31d9671bfc22df51c7e66b3c15c4
treec2f9898847a5773536bf9e2ef2add5068b6aae39
parentf998958df27272a689a31c5c6f38f0aad3884498
nfp: Use pci_get_dsn()

Use the newly added pci_get_dsn() function for obtaining the 64-bit
Device Serial Number in the nfp6000_read_serial and
nfp_6000_get_interface functions.

pci_get_dsn() reports the Device Serial number as a u64 value created by
combining two pci_read_config_dword functions. The lower 16 bits
represent the device interface value, and the next 48 bits represent the
serial value. Use put_unaligned_be32 and put_unaligned_be16 to convert
the serial value portion into a Big Endian formatted serial u8 array.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Cc: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/ethernet/netronome/nfp/nfpcore/nfp6000_pcie.c