From mboxrd@z Thu Jan 1 00:00:00 1970 From: "ira.weiny" Subject: [PATCH] IB/hfi1: Expand reported serial number Date: Wed, 27 Jul 2016 21:09:40 -0400 Message-ID: <20160728010940.GD3158@phlsvsds.ph.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Doug Ledford , linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-rdma@vger.kernel.org Expand the serial number space by using more bits from the GUID. Reviewed-by: Jubin John Signed-off-by: Dean Luick Signed-off-by: Ira Weiny --- drivers/infiniband/hw/hfi1/chip.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/infiniband/hw/hfi1/chip.c b/drivers/infiniband/hw/hfi1/chip.c index becc7b11e31e..c93683496614 100644 --- a/drivers/infiniband/hw/hfi1/chip.c +++ b/drivers/infiniband/hw/hfi1/chip.c @@ -14601,8 +14601,14 @@ struct hfi1_devdata *hfi1_init_dd(struct pci_dev *pdev, /* set up LCB access - must be after set_up_interrupts() */ init_lcb_access(dd); + /* + * Serial number is created from the base guid: + * [27:24] = base guid [38:35] + * [23: 0] = base guid [23: 0] + */ snprintf(dd->serial, SERIAL_MAX, "0x%08llx\n", - dd->base_guid & 0xFFFFFF); + (dd->base_guid & 0xFFFFFF) | + ((dd->base_guid >> 11) & 0xF000000)); dd->oui1 = dd->base_guid >> 56 & 0xFF; dd->oui2 = dd->base_guid >> 48 & 0xFF; -- 1.8.2 -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html